While AI agents can be built in days, it takes weeks to find the best configuration to optimize cost, speed, relevancy, etc. Eval tools and frameworks are the key ingredients for this optimization phase.

We automated proofreading our blog articles with a GitHub action leveraging an LLM. It even reviewed this very article!

Marmelab était au Devfest Strasbourg 2024. Voici ce qu'on en a pensé et ce qu'on y a découvert.

Marmelab était à la conférence lilloise et vous raconte les conférences qui ont marqué leur esprit.

How to use Google Identity Services as the authentication provider in a React application, a step-by-step tutorial.

Watch the conference talk to discover how API Platform Admin can help you easily create powerful admin interfaces for PHP applications, without needing JavaScript knowledge.

PostgREST has been around for a long time, but many web developers still haven't discovered how it can simplify their workflow.

Join François and Thor Schaeff from Supabase as they explore the technical journey of building Atomic CRM, the tools used, and the benefits of open-source development.

Tips and tricks to optimize the performance of your React app

LLMs share similarities with CPUs but bring unique challenges like slower speeds and probabilistic behavior. To effectively use LLMs, we need new programming approaches, specialized developers, and adjustments in our educational system.

Étapes, accordéons, onglets ou sommaire : quelle est la meilleure structure pour optimiser les longs formulaires ?

We've released two minor versions of react-admin v5 since the summer. Read on to learn about the new features and improvements we've added to the library.

Stop Running in Circles and Ship Work that Matters: It is the promise of this methodology that we are going to explore in greater depth.

Un CDN d'image accélère le chargement des pages web. Mais il y a tellement d'offres que l'on s'y perd. Nous avons pris le temps de sélectionner et de tester les meilleurs.

GreenFrame 2.0 is here! It's never been easier to measure and reduce your website's carbon footprint.

Every company has unique CRM needs, but custom solutions are costly. We built Atomic CRM—an open-source framework for custom CRMs—to tackle this challenge.

Speech-to-Text is becoming a common feature, and modern tooling makes it easier to implement. Read how we built an Aqua clone using Cloudflare Workers AI, OpenAI Whisper, and Vue3.

From the stunning venue to the captivating talks and valuable networking opportunities, the conference exceeded our expectations.

During this 10th edition of #play14, we have filled up on workshops to help you with your team building, and here are 5 more.

This year marked a special edition as #play14 celebrated its 10th anniversary. Here are four serious games you can use to improve team collaboration.

Marmelab partnered with Qwant to transform a promising AI prototype into a robust, production-ready agent. Discover how our expertise in AI evaluation and agile methodologies ensured a seamless and efficient deployment.

Cloudflare recently launched Workers AI that provides machine learning model inference at the edge. This article explains how we built a simple AI Assistant using Nuxt and Llama 3 8B on Workers AI.

Vous voudriez inverser la relation hiérarchique avec votre manager ou votre patron ? Voici une méthode facile et rapide ;) .

After 6 months of hard work, the new major version of React-admin is here!

Nous avons interviewé Calange Favreau, responsable Cloud chez Bpifrance, qui est utilisateur de GreenFrame et engagé dans une démarche de réduction de son empreinte carbone numérique.

On a adoré la conférence lyonnaise sur la tech et sur ce qu'il y a autour. Voici nos talks préférés et les liens vers les rediffusions.

Discover how AI can automate form completion from external sources, making data entry quick and efficient.

From SVG inconsistencies to resetting ScrollTrigger animations smoothly, or even FOUC prevention, we share practical solutions for GSAP pitfalls.

React-admin can be used to build native mobile applications, which can also run on web browsers, thanks to its headless architecture.

I try to simplify my state management approach using an atomic tool, jotai

If you missed React Paris 2024, here is a summary of the talks I found the most interesting.

Bruno is an innovative open-source IDE for APIs you won't be able to live without.

L'expérience utilisateur sur les longs formulaires est un défi ergonomique. Découvrez les bonnes pratiques pour améliorer l'UX des grands formulaires.

Leverage the CSS Custom Highlight API to highlight words within a larger body of text. This technique is compatible with all JS frameworks.

To explore the LIT framework, I built a framework-agnostic accordion component that I managed to reuse in React and Vue.

The GSAP ScrollTrigger plugin facilitates scroll-based animations like parallax scrolling and slide-in panels. Learn how to use it to create engaging user experiences.

Experience seamless type synchronization across the stack with tRPC, freeing developers from tedious manual typing tasks.

Nous avons assisté à cette très bonne conférence tech généraliste. Voici nos talks préférés.

GSAP is a powerful and open-source JS animation library. Here are the essentials to get you started.

With so many sources of information available, it's easy to become overwhelmed by information overload. Let's use AI to select and summarize the most relevant articles.

We've enabled OpenTelemetry on some of our Node.js APIs and their React client, and it was surprisingly easy. The full-stack traces let us debug faster. This hands-on guide explains how to do it.

AG Grid, Versioning, Date inputs, improved providers, new themes, a new demo, Daisy UI, Cognito... and a YouTube channel!

Git Hooks and Husky can be used to check the quality of your code, automate repetitive tasks or standardize commit messages.

From database to query results, the Kysely query builder embraces strong typing with TypeScript.

JS developers can now write shell scripts with good performance with Bun Shell. This promising tool is still under development.

How to make sure that our application works well and catch any problem ASAP? Discover monitoring, from basic concepts to OpenTelemetry, a very promising open-source project.

Data fetching and form handling are about to get easier in React, and not just in SSR apps.

Struggling with disruptive app migrations? Discover a systematic strategy that enables progressive migration while maintaining a consistent and uninterrupted user interface.

Why investing in documentation pays off, and how to write great documentation, based on our experience with react-admin.

If you've ever struggled when writing or reading a review, here's a way to simplify this essential process.

A new, experimental API has landed on chromium-based browsers. It allows us to have better control of the transition between two pages.

What is the state of the art in OCR of handwritten historical documents? We tested Open Source libraries and Cloud-based solutions, met researchers in the domain, and learned a lot in the process.

In our journey to monetize a popular open-source project, we realized that mere engineering skills weren't sufficient. Acquiring sales and marketing expertise was essential to make our project profitable.

The core of react-admin is UI-agnostic. This article explains how to build a react-admin application with Tailwind CSS and Daisy UI.

How can you sell something that is free? We explain how we turned react-admin, a popular open-source project, into a profitable product.

Build a CI workflow (GitHub or GitLab) to turn the screenshots taken after an e2e test failure (Cypress, Playwright) into CI artifacts.

We open the books of react-admin, a profitable open-source project generating almost €1M in revenue. We hope this will assist other open-source developers in building their businesses.

We’ve generated almost €1M with react-admin, an open-source developer tool. How did we do it? Here is our story, and it’s open-source, too.

Milestones link code changes directly to specific release versions, boosting project clarity.

In the movie "Her", the hero falls in love with an AI. This is no longer science fiction: I managed to recreate the voice chat experience.

This practical tutorial shows how to use the routing and a custom button to improve user experience.

What? Another super-long article about react-admin updates? But when am I supposed to read this?

Comment se passe le un projet de développement web avec Marmelab ? Nous avons interviewé Camille de Salabert et Nicolas Thouvenin de l'Inist CNRS pour en savoir plus sur leur expérience.

This tutorial will show you, step by step, how to configure a React-Admin application to use Azure Active Directory as an authentication provider.

WASI takes more and more place in containers, but can we use it?

Add AI superpowers to your web apps with the new PredictiveTextInput and SmartRichTextInput components.

The largest hotel group in Europe approached us to assist in resolving delivery and performance issues with their mobile app development.

How to develop a Trello-like board where users can drag and drop cards, using react and react-admin.

What is the best React framework for your next project? Make an informed decision with this detailed benchmark.

See how to manage translation with Polyglot.js and a NestJS backend, and take advantage of interpolation and pluralization!

Infinite pagination, dark mode, ReferenceOneInput, zero-config server-side validation, auto-saving forms, TreeInput, create-react-admin, and much more!

La conférence lyonnaise sur la tech mais surtout sur ce qu'il y a autour.

Meet Molly, a conversational agent with an inner monologue, who gives the illusion of consciousness.

React Server Components, while innovative, risk causing division in the React community due to their potential to undermine Single-Page App architecture.

Reducing the size of the video assets of the React Admin documentation certainly is a simple way to reduce its carbon footprint. But this comes with some challenges. Hence, we've built a CLI tool to make the process easier.

Learn how to use Vitest and React Testing Library to write unit and integration tests for a Search Component.

Is Solid.js mature enough to build complex web apps? What are the core differences with React? To answer these questions, we developed solid-admin. Let's dive in!

Les développeurs et facilitateurs partagent souvent ici leurs secrets de fabrication. Les commerciaux, jamais. Il est temps de réparer cette injustice.

How react-admin data provider hooks streamline the development of complex components.

My key takeaways about an academic conference held last month at Loria, where I learned about the carbon footprint of data centers and its impact.

Our agency emits 2.2tCO2e per employee per year, less that half of the sector average. And we're actively working to reduce our carbon footprint.

Building a collaborative Planning Poker Application with no server using peerJS.

We built a handless game with TensorFlow and JavaScript to learn how to integrate AI into web applications.

React Admin is a very convenient tool to create fully-featured forms quickly. Let's have a look at how to customize a form layout to improve its readability and the user experience.

IAD disrupts traditional real estate by fostering independent consultants and enhancing their experience with a Marmelab-created revenue simulator.

For my onboarding at Marmelab, I built the Labyrinth game with a command line interface using Go and GOCUI.

DataProvider callbacks, Count components, OAuth support, Custom Resource routes, and many more new features to discover in the last 2 releases.

What if we could use AI to spot bugs, suggest improvements, and pay open-source developers for their work?

The best way to learn react-admin is by looking at existing apps. Here is a new one to learn from.

Developers often use low-code tools like react-admin to increase their development speed. But what about no-code tools? How far can they get and are they nice to use?

useEffect is the hardest part of React - and the most error-prone. What if we could build entire React apps without this hook? It's possible - but you need a framework.

Rive helps you create animations with state-machine

A decade of designing and developing web and mobile apps for clients: Let's look back on 10 years of exploration, sharing, and caring.

How EgdeDb differs from other databases, does it compete, does it works? Let's check this.

Introducing a new React hook that allows you to run asynchronous side effects in a simple way.

In this post, I will show how to setup the root and user credentials for a Postgres database in a truly secure way, leveraging a secret management system.

NPM v9 is now using Web Login as its default authentication type. Let's see how it works and what it takes to implement it in a private registry.

How can you implement multitenancy in React, Vue, Svelte, or any other frontend framework?

Configurable components, Edit in dialog, useInfiniteGetList, Discord server, better inputs documentation, and many more new features to discover in the last 3 releases.

Combining a backend-as-a-service and a low-code tool lets you develop web apps super fast

On a assisté à la conférence Volcamp en Auvergne, inflitrés au coeur du domaine du groupe LavaJUG. Voici ce qu'on en a retenu

The best developer tool to measure the carbon footprint of websites is now free to use.

Niji a sponsorisé le support de Kubernetes dans GreenFrame, notre outil d'analyse de l'empreinte carbone des sites web.

Can we use react-admin with only client-side storage? Leveraging LocalForage, which uses InnoDB and is not limited in size, react-admin becomes the ideal tool for offline-first web applications.

Programming with AI-powered assistants like GitHub Copilot feels like being in a science fiction movie - for better and for worse.

The new place to discuss react-admin, ask questions, and get help.

PostgREST lets developers expose a REST API based on an existing database with almost no code. Let's discover how setup this tool!

Découvrons les fonctionnalités clés de K8s avec notre application fraîchement migrée.

We've come a long, long way together. You changed. Where do we go from here?

Kubernetes n'est pas si complexe d'utilisation qu'on le dit. Voyons en douceur comment migrer depuis docker-compose.

Since version 4.0, react-admin released many great features both in the open-source and enterprise editions. References and Forms, in particular, have received many upgrades.

Pendant mon intégration chez Marmelab, j'ai développé un algorithme pour jouer à Abalone. Il est (vraiment) imbattable.

Faire des revues de code, c'est bien, mais comment bien les faire?

Découvrez les prototypes JavaScript, les expressions régulières, et la publication de package npm grâce à une librairie que personne, personne n'a jamais demandée

Interview of Alex, head of web dev at Caritas, and Cornelius, PO.

We've managed to build a sustainable open-source project! This is a dream come true.

A step-by-step example explaining how to use React-Admin inside a Remix app, and how to configure it to use Supabase as the data provider.

I try to simplify my state management approach using a proxy based tool, Valtio

Lors de mon intégration, venant du monde de Java, j'ai dû apprendre à utiliser des concepts de la programmation fonctionnelle.

A step-by-step guide, with screenshots, that I built during my integration challenge

RBAC, editable datagrid, many-to-many relationships, realtime, calendar, audit log, site search, and more: the private modules are now available for the latest version of react-admin.

Vous êtes dev JS ? Vous en avez assez de ne pas savoir lire les oneliners bash ? Alors en voiture !

Un guide pas à pas pour tirer parti des services AWS pour son site internet

After over 6 months of development, we are excited to introduce the new major version of react-admin.

We replaced react-final-form with react-hook-form. Why did we make the switch and what does it change for you?

If you had to write a framework for single-page apps, chances are you would probably build something close to react-admin v4.

The most important difference between react-admin v3 and v4 lies under the hood. React-admin v4 no longer uses Redux for state management - without changing the developer API.

The new major version introduces a new set of features centered around User Experience and preferences.

Benchmarking the CO2 emissions estimated by GreenIT Analysis, Website Carbon, Digital Beacon, GreenFrame, Ecograder, and PageSpeed Insight on the same website, weather.com.

The new major version of react-admin improves developer experience a great deal thanks to one simple trick.

Board games present unexpected programming challenges, and I learned many lessons by trying to detect the winner of a simple - yet very interesting - game of Hex.

Retour sur la mise en place d'un système de workers en tâche de fond sur une application web pour le CNRS

Une démarche outillée pour mettre en oeuvre une stratégie "Green Tech".

The latest version of the React component library boosts the developer experience when writing custom styles.

Peut-on faire du beau code avec un vieux language périmé ? La seule façon de le savoir, c'est d'essayer !

Everybody writes at Marmelab. Here is our secret sauce for publishing one good article per week for the past 9 years.

React-admin is designed for single-page-apps, but can also run with an SSR framework like Next.js

Les équipes du Monde nous ont chargé de réduire les émissions de CO2 liées à l'utilisation de leur site de 30%. Pari tenu ?

Dans l'innovation, l'échec fait partie du quotidien. C'est l'un des premiers apprentissages des nouveaux arrivants chez Marmelab.

Website editors, here is a tool and guide to reduce your environmental impact

GreenFame, the carbon leak detector for websites, is now being used to tackle the new challenges caused by the transformation in the media industry.

J'ai participé à la conférence 'School of product' avec un regard de développeur, voici ce que j'en retiens.

The React-admin team expands, with a new developer joining us from Montevideo, Uruguay

Editeurs de sites web, voici un outil et des recettes pour réduire votre impact environnemental

While waiting for the react-admin of the future, let's discover the react-admin of the past.

Each font variant (bold, medium, etc.) requires an additional file, which slows down navigation. Except if you use variable fonts!

The current web is not what Tim Berners-Lee expected it to become, and he wants to fix it. He came up with a solution called Solid. Is it usable yet? Let's find out!

Back in 2016, we mined 5 ethers to test the blockchain technology. This year, we've sold the remaining ether and donated the revenue to charities, because we don't want to speculate on global warming.

J'ai eu l'honneur d'ouvrir le Forum PHP 2021 à Paris avec une conférence de vulgarisation sur les enjeux de la Green Tech. Si vous l'avez ratée, la vidéo est en ligne !

I used the blessed library to add mouse interactions to a terminal app, and it improved the user experience a lot.

I gave a talk about advanced react-admin tips at this year's API Platform Conference in Lille, France. Here is the video of the talk.

Notre petite équipe à défendu l'honneur de Marmelab sur l'escape game organisé par CodinGame.com

How we used Edge-Side Includes in a React.js application to boost the performance of a Server-Side Rendered application.

Nous accueillons simultanément deux nouveaux développeurs full-stack. Voici leurs cursus.

To use a database in a web app, we have to build an API. But what if we could use a database directly from the browser?

To learn a new language, nothing beats practice. We've used Rust to redevelop a game that we already built in many other languages. Here are our impressions.

In the past 6 months, the Enterprise Edition got 2 new private modules: ra-audit-log, and ra-rbac. ra-preferences now also features no-code components.

Apres avoir développé un jeu en python, voici comment j'ai créé son api avec Symfony.

From 3.15 to 3.18, React-admin introduced tons of improvements, including a better sidebar, quick choice creation, and many List additions.

Leveraging storybook and testing-library makes integration tests a piece of cake - and I don't need more.

Create-React-App is a great tool to bootstrap React apps, but it can be quite painful when you need fine-grained control over the Webpack configuration.

I had the pleasure to give a talk about how developers impact climate change at the SymfonyWorld Online 2021 conference. Here is the full-length video.

To finish the exploration of functional programming with the Checkoid internals, let's combine a synchronous Validator with asynchronous one with a lazy Promise... that is also a Monad.

React Server Components are an upcoming feature of the React framework. I wanted to form my own opinion about them. Spoiler: It's mixed

Broadcom leveraged react-admin to boost and enhance their API Management offering with API Hub, which provides an enriched API consumer-facing user experience

Recruiters ask everywhere for Ninja developers. We've built the perfect IDE for such developers, using Machine Learning and Pose detection.

React-admin isn't just for admins. Check out how we used it to build a complete CRM solution.

I have compared several configurations of a MediaWiki server, respectively with and without cache, and we found that caches play a major role in the energy footprint reduction.

Retour d'expérience sur mes deux dernières semaines d'intégration chez marmelab où j'ai développé une IA en Golang puis une application mobile en React native du jeu Pentago.

Pour stabiliser des tests dépendant de la date, on peut changer la date d'un container. Mais est-ce que ce pouvoir n'est pas trop dangereux ?

We've made Argos, our tool for measuring the environmental impact of web apps, available for public web pages, for free.

With react-admin 3.13 and 3.14, developer productivity continues to increase, and new developers should get up and running faster than before.

Dans cette vidéo, Gildas nous parle du projet open-source React-admin

Pendant 5 semaines j'ai développé un jeu en python, créé son api avec symfony, fait son IA en Go, écrit sa version mobile en react-native et publié une version web avec nextjs. Voici ce que je retiens de la première semaine.

Retour d'expérience sur mes deux première semaines d'intégration chez marmelab ou j'ai développé, d'abord en Python puis en Symfony, le jeu Pentago.

Nous accueillons presque en même temps deux développeurs full-stack expérimentés. Qui sont-ils?

Dans cette vidéo, Maxime et Pierre nous parlent du projet open-source stretch-discord

Does an app in Node.js/Rails consume more energy than the same app in Vanilla.js+WebComponents/React.js? We've used Argos, our energy footprint calculator, to find out.

Dans cette vidéo, Kevin nous parle du projet open-source comfygure

Pourquoi et comment tester des APIs web ? Quels outils nous facilitent la tâche, et quels sont leurs limites ?

In this new functional programming tutorial, I'll explain how Functors can help us assemble validator functions to validate complex data structures like objects.

In the past 3 months, the Enterprise Edition got 3 new private modules: ra-search, ra-calendar, and ra-enterprise, in addition to saved queries in ra-preferences.

React-admin 3.10, 3.11 and 3.12 introduce tons of improvements, including server-side validation, keyboard navigation, and optimistic mutations

Comment nous avons mis en œuvre une migration continue

Come and see monoids in real-life, in this tutorial explaining how to combine validator functions like lego pieces.

Comment nous avons préparé un chantier de migration continue

Pourquoi nous nous sommes lancés dans un chantier de migration continue

Doté d'un profil mixte dev / produit / innovation, mâtiné d'une formation en RSE, Pascal est une recrue de choix pour notre équipe de facilitateurs !

React-admin doesn't offer a feature that you need? No problem, it's just React! This practical tutorial update shows how to allow users to edit their profile in React-admin v3.

As developers, we're sitting most of the day. Let's see what we do at Marmelab to counter the effects of the sitting position.

We've built a tool measuring the energy consumption of web apps to help reduce the environmental impact of developers. See how it works in this preview.

Voici la vidéo de la conférence que nous avons donnée au Forum PHP 2020.

We've built a simple and powerful validation library that allows to combine validator like lego pieces.

React-admin pretends it can connect to any backend using a custom data provider. I decided to challenge this statement. How far did I go?

I am the lead developer of a popular PHP library. I can't maintain it anymore or give it away, so I'm archiving the project.

Accordion and Wizard Forms, Edit in dialog, Dual List Input, and Content Locks will make you more productive with react-admin.

What if you could create a 3D Labyrinth game with only HTML tags? That's the promise of x3dom, which I explore in practice in this tutorial

React-admin 3.7, 3.8 and 3.9 introduce TypeScript support, Filter Sidebar, User Menu Improvements, and ListContext

Les Architecture Decision Records (ADR) répondent à la question: Pourquoi a-t-on mis ça en place déjà ?

What's better than vanillaJS? Maybe SvelteJS, especially to add high-level features to your web pages!

How can developers design, code, and host software to minimize their carbon footprint? How reliable are these practices?

How much CO2 do I emit on a typical day with my digital activities? Are the developers responsible for climate change?

React-admin doesn't offer a feature that you need? No problem, it's just React! This practical tutorial shows how to use the routing and a custom button to improve the user experience.

Learn how to customize the theme of a react-admin application without rewriting everything

Buy additional modules on top of the OSS version, and professional support by Marmelab experts to streamline your react-admin development.

The best practice regarding JWT storage is to use memory rather than local storage. But it comes with numerous challenges. Let's see how to tackle these in the case of a react-admin application.

Notre projet: améliorer l'impact environnemental de react-admin et d'API Platform Admin, deux framework open-source très utilisés.

Hands-on with StrapiJS, an Headless CMS that allows to separate data and display.

Three minor releases in the last three months: it's about time we look at the new features!

Modsir19 est un produit visant à modéliser et prévoir l’évolution de la pandémie Covid19 et ses conséquences sur l’occupation hospitalière. Marmelab a embarqué dans l'équipe pour 2 sprints de conception et développement des interfaces utilisateurs.

We've modernized the code of Gremlins.js, our monkey testing library for frontend apps. It's now super easy to detect memory leaks in your JavaScript code.

On trouve plus de 200 dépôts publics sur notre compte Github. Est-ce à dire que nous maintenons plus de 200 projets open-source ? Non, un petit nettoyage s'imposait...

Pour la première fois de son existence, Marmelab se dote d'un commercial. Et pas des moindres.

Le confinement nous a appris que nous savons collaborer en télétravail. Nous pouvons donc recruter partout en France !

Learn how to migrate to react-admin v3 with this tutorial for a common feature in admin forms.

La spécification OpenAPI permet d'écrire le contrat du service fourni par une API REST. Mais comment écrire un tel contrat et à quoi va-t-il servir ?

My integration period at marmelab continues with the Go implementation of the Quoridor board game.

Des volontaires Marmelab ont développé en un week-end une plateforme de commande de visières à usage médical.

HATEOAS, JSON-LD, JSON API, HAL, Hydra ... La liste des acronymes de spécification liées au REST est longue. Quelle est la place d'OpenAPI dans cette liste ?

Save up to 50% scripting time and a lot of bandwidth in your react-admin applications

Second part of my feelings about my integration period at marmelab.

We at the empire didn't do a great job with the Death Star. Let's use the Agile methodology to improve our process through a Retrospective.

After a first experience with ReasonML, I wanted to check if its parent language, OCaml, was also that good. It took me an entire game to form a clear opinion.

Mettre à jour des données en temps réel sur une application GraphQL, un défi? Une seule façon de le savoir: créons un prototype de sondage en temps réel.

There are two relatively new APIs in the browser: DeviceMotion and DeviceOrientation. Let's see how to use them to detect the device motion and orientation.

Today is International Data Privacy Day, so we made some changes on our website to protect your privacy.

It is never easy to set up functional tests involving calls to an external API. Polly.js is a useful tool to know when you need to mock calls to an API.

The ideas we had for the urgent actions application were just assumptions. We tested them with the help of the Build-Measure-Learn feedback loop, and were quite surprised with the results.

Dernière semaine d'intégration pour développer une application React rendue côté serveur et la déployer !

To build a zero-knowledge web application for managing a cluster of security proxies, we've had to push modern browsers to their limits

Easier theming, new components, and fine-tuned capabilities make react-admin suitable for even more projects.

Nouvelle semaine d'intégration et nouvel objectif : pouvoir jouer à Quixo sur mobile !

Design Systems are an increasingly common practice in web development. Let's study how to do ours with StencilJS

Voici la vidéo de la conférence de 45 minutes sur Modern Agile que j'ai donnée à Agile France et au Forum PHP 2019.

On connaît tous ce collègue qui, un matin, s'est retrouvé face à un écran noir. La plupart du temps, il suffit d'appeler le service support de l'entreprise. Mais chez nous, chaque dévelopeur est responsable de sa machine. Voilà comment nous gérons ça.

After 7 months of hard work, version 3.0 stable is finally here!

Découverte de la magie des web workers à travers React.

We've published a new version of the popular PHP library Faker. The next one will be a major version, with breaking changes.

Comment configurer une appli React Apollo pour faire du SSR avec code splitting et hot reload

J'entame ma 3ème semaine d'intégration chez Marmelab. A la fin de cette semaine, je devrai pouvoir jouer seul à Quixo grâce à une IA en Golang

First part of my feelings about my integration period at marmelab.

On a short project, we decided to use Firebase, a Rapid Application Development service, to save time. Was it a good choice?

The react-admin user interface for lists and forms has seen a few tweaks to improve usability and visual consistency.

Querying the Data Provider with React hooks is such a joy that it should suffice to motivate you to upgrade.

Material-ui handles most of the styling and theming of react-admin v3.

This is a great example of how we use dependency injection in React.

The developer experience was our main concern for designing the new react-admin version. See how it applies to the auth logic.

From solution to problem, the work we did for Amnesty is a great example of how we design digital products

L'équipe de développeurs marmelab continue de s'étoffer avec le renfort d'un nouveau profil très expérimenté.

How to develop an offline-first, real time React app using a NoSQL database, in practice.

We tried a new product that helped us load test an app before a critical event in production. This post explains how we did and how flood.io helped us.

The pen is mightier than the sword... Can we get a smartphone to be as mighty? Read the story of how Marmelab helped AI to invent a new form of activism.

Webpack permet d'ajouter des étapes supplémentaires au processus de compilation des projets JS. C'est plus difficile quand le projet utilise `create-react-app`. Voici la solution.

C'est ma deuxième semaine chez Marmelab. Pour mon parcours d'intégration, je dois développer le jeu Quixo en PHP avec le framework Symfony, et coder un mode multijoueur.

Browsers support a new WebAuthn standard to facilitate strong authentication. We've open-sourced a library to facilitate its implementation.

How I made Quarto a pleasant game with a Symfony graphical user interface, and learned a lot in the process.

Récit de ma première semaine d'intégration et du défi que j'ai du relever: développer un jeu de Quixo en 4 jours.

Un nouveau développeur full-stack vient renforcer notre équipe.

J'ai côtoyé pendant 8 semaines les équipes de pilotage et de développement de Marmelab. J'ai découvert tout un tas de pratiques qui m'ont étonnées, je vous les présente !

Two years after the initial release, we're finally publishing a stable version of comfygure! Read on to see what's new in our open-source configuration storage.

In the middle of Dublin, and with an impressive line-up of speakers, this agile conference was really worth the trip.

Les stores d'application facilitent la distribution et la mise à jour des applications. Grâce aux snaps, c'est aussi possible sur Ubuntu.

If you want to understand what true disruptive innovation is and go further than the buzzword: Read that book.

Do you need to do native development to get native AR performance on mobile?

Want to be more confident with your code? Property Based Testing can automatically generate data to test your code

For the first time, marmelab developers attended the European VueJs conference. Read on to discover what we learned!

You don't agree with some of our design decisions? No problem, just supply your own and keep your code DRY!

It is a bad practice to chain one monad with a monad of another type. Read on to understand why, and how to chain monads the right way.

Highlights of the new features introduced by version 2.7 and 2.8

Developers coming from other frameworks sometimes look for a dependency injection system, but fail to find it. It's right before their eyes.

React-admin doesn't offer a feature that you need? No problem, it's just React! This practical tutorial shows how to allow users to edit their profile.

How to setup cypress e2e tests on a meteor app

Hasura est un serveur GraphQL pour PostgreSQL. Lorsque le modèle de données change, comment passer l'info à Hasura pour mettre à jour l'API?

We recently had to investigate and optimize a large PostgreSQL database. Here is a what we did to remove the bottlenecks.

Don't want to show a full new page to edit or create records? This tutorial shows how to display those forms in a drawer or a dialog from the List page.

Trying to fit every requirement into a user story leads to backlog aberration. We should only use User Stories when trying to capture user value.

Why and how to setup HTTPS certificates, with or without reverse proxy, in a JavaScript development environment.

When customer requirements can't be addressed by react-admin out of the box, it's time to use pure React. As this tutorial shows, it's quite straightforward, and react-admin never gets in the way.

Thanks to the hard work of more than a dozen developers, 2019 starts with a new react-admin release. Read on to see the highlights.

When we deliver our code as docker images, how do we ensure that their configuration is correct?

We attended the DotJS 2018 conference in Paris. We saw several awesome talks worth watching. Read on for details!

Voici la vidéo de la conférence de 45 minutes que j'ai donnée à BlendWebMix 2018. J'y partage les bonnes pratiques React.js que nous avons apprises grâce à react-admin.

Une idée à forte incertitude, plein de risques techniques, le tout dans un grand groupe : ce projet est un candidat idéal pour l'approche marmelab.

I'm used to recording all the little things I learn from day to day as a developer. Since I didn't find the right note-taking tool to integrate in my daily routine, I coded it. Read on to see what I learned in the process.

Marmelab a rejoint Palo IT à l'autre bout de la France pour découvrir la conférence Devfest. Découvrez notre sélection des sessions les plus marquantes.

Making components allowing to quickly build interfaces while remaining customizable

React-admin, our client-side admin GUI running on top of REST and GraphQL APIs, gets a bunch of new features to further improve the developer experience. Click to check the highlights.

Nouveau sprint d'intégration à Marmelab sur le jeu du Quarto : Réaliser une IA capable de battre un humain

A wizard form is like a carousel: it's a series of slides. Implementing it in React is a great way to learn about state, transitions, and CSS-in-JS.

Like every year, Marmelab is joining the Hacktoberfest. Come with us to celebrate open-source software and try to win a nice t-shirt.

`Functors` and `Monads` may sound frightening, they are powerful concepts that can help developers on a day-to-day basis.

This new release of react-admin, our client-side admin GUI running on top of REST and GraphQL APIs, should be called a 3.0 since it brings so many new things. But, by virtue of SemVer and backwards changes, it's just a 2.3.

We believe that the commonly used onboarding processes are broken. We invented a new way to welcome new collaborators, help them learn our tools and methods, and find their place in our organization. Let's fix onboarding together!

React-admin allows to initialize a form to create a new resource related to the current one inside the main form. Here is how.

Export button, Dense AppBar, callback side effect, error page, clear Button on inputs, clone button... There are so much enhancements in this release that you'd better read the article.

Première semaine chez Marmelab ; premier projet ; premières sueurs ; premières découvertes ; et surtout : premières étoiles dans les yeux

To make sure your site is accessible and fast, check it during the continuous integration process. Here is how to do it in practice.

Fort de dix ans de développement chez un éditeur de logiciels pour les professionnels de santé, Julien s'est décidé à faire le grand saut et vient de rejoindre Marmelab.

I attended a few weeks ago my first conference about machine learning. As a developer with almost no experience in this field, I learned a lot without getting lost in the mathematical meanders associated with this topic. Here is my feedback.

React-admin doesn't offer a feature that you need? No problem, it's just React! This practical tutorial shows how to use the routing and a custom button to improve the user experience.

The first minor version since 2.0 improves the developer experience, based on the feedback we've received. It's never been so fun to develop admin GUIs with React!

Redux is a fantastic tool for managing state in React.js, but is it suitable for all situations? Probably not.

How Henrik Kniberg facilitated a 60 persons project with agile methodologies

End-to-end tests are common in the browser land, much less for native apps. A good solution is Detox, a gray box E2E testing framework for mobile apps.

Developers have a lot to learn from the book "Site Reliability Engineering - How Google Runs Production Systems", starting with time management and blameless retrospectives.

Material-ui 1.0, CSS-in-JS, undo button, bulk actions, and much more: Building admin GUIs with React has never been easier.

We've experimented an alternative way to liberate our retrospectives, using food. The results are delicious!

What do number addition, string concatenation, array concatenation, and function composition have in common? They are all monoids, and they have very interesting properties.

As a seasoned speaker, I decided to go one step further by reading feedbacks from professionals. Scott Berkun is one of them, and his book brought me to very precious and practical insights about how to thrill the crowds. Here is a book review of this must-read book.

What can you expect from a two day conference for agile coaches and practitioners who really want to play? Games!

ReasonML is one of the hypest language of the moment, and in my opinion, it's for good reasons. Let's discover this language together.

An introduction to memory debugging, from identifying causes to fixing leaks, using Chrome DevTools, and illustrated by simple examples

We've been working with 1859 for more than 3 years to build an innovative investment club, powered by a mobile app and a full-fledge admin. Read on to learn more about this customer story.

Diving into machine learning requires some computation power, mainly brought by GPUs. Let's start our machine learning journey by configuring Docker to use NVIDIA GPU.

This gentle introduction to functional programming explains pure functions, currying, and composition. Easy peasy!

"Don't judge a book by its cover"... neither should you by its title. I read "The Lean Startup" by Eric Ries, and you should read it too. It's all about innovation.

To make sure your site is accessible, you'd better add a check for accessibility in your continuous integration process. Here is how.

This tutorial leverages the FileReader and Canvas APIs to demonstrate the browser image manipulation capabilities

Compte-rendu de la première conférence dédiée aux agilistes et aux Product Owners, qui s'est déroulée à Paris le 13 février dernier

This new version fixes many bugs, including long standing issues, and introduces a couple new features

In order to understand recursion, you must understand recursion.

Compte-rendu des quatrième et cinquième semaines de mon intégration chez Marmelab, au cours desquelles j'ai développé une application et un client web en React

After several months of hard work, we are pleased to release a new version (1.0) of EventDrops, the d3.js dataviz for time series. On the menu: blazing fast performances, simplified configuration, and healthier foundations for easier maintenance!

Une vidéo de 40 minutes sans langue de bois, avec des exemples concrets et plein de dessins pour enfin tout comprendre à la blockchain

Configurable artifacts are a deployment method used to ship code to various environments in a single build. Read on to learn how to better automate your deployment.

Nous étions à la conférence BlendWebMix à Lyon cette année, entre autres pour y présenter GraphQL. Voici ce que nous en avons retenu.

Pour le premier apéro agile de Nancy, je présentais les fondamentaux de la rétrospective agile, tels que présentés dans le livre "Agile Retrospectives". Voici 5 étapes simples pour améliorer le processus du travail en commun.

Compte rendu de ma troisième semaine d'intégration chez Marmelab : développement d'un client web en php (framework Symfony), basé sur l'api 15 puzzle

En plus d'être une compilation de plus de 90 jeux sérieux et activités de facilitation, Game Storming nous livre la mécanique des jeux sérieux.

In the jungle of new programming languages, Crystal is one of the most popular ones, but also the most mysterious. Let's take a look at it.

We attended the DotJS 2017 conference in Paris. We saw several awesome talks worth watching. Read on for details!

Mobile web apps need sophisticated animations to feel native. This tutorial lists the good practices to implement such animations, illustrated by a concrete example.

Compte rendu de ma seconde semaine d'intégration chez Marmelab : développement d'un jeu du Taquin en GO et d'un algorithme de suggestion de coups

Jest is a Javascript testing framework highlighting three main features: no configuration, improved performance, and easy mocking. Are they marketing promises, or reality? Let's verify it by testing Jest on a basic React project.

Store and deploy settings across development, test, and production environments, using an encrypted key-value store.

Compte rendu de ma première semaine d'intégration chez Marmelab : développement d'un jeu du Taquin en Python, en ligne de commande

Ingénieur doté d'un an et demi d'expérience en C# et angular.js, Adrien nous rejoint au bureau de Nancy. Mais qui est-il vraiment ?

Code splitting and server-side rendering are two ways of making a React app fast. Let's put them together in practice, with Redux, Sagas and React Router V4.

GenServer is the cornerstone of a lot of Elixir distributed apps. If know Redux, you'll easily understand its strengths

At Marmelab, each new project starts by a two weeks setup phase. Here is our recipe to start soon.

On trouve beaucoup d’articles de blog sur le « full time remote jobs », moins sur le télétravail à plein temps. Si les entreprises en France s’ouvrent petit à petit, journée par journée au télétravail, le travail à plein temps à distance est moins courant. Pourtant c’est possible et c’est efficace.

The marmelab.com website is now more mobile friendly, and provides a better reading experience on the blog. It's also more up to date in terms of design.

New features: Permissions handling, layoutless custom routes, refresh by action, custom validator messages, not found pages. And a big announcement!

Real time and locking often go hand in hand with complexity. This post explains how to deal with it the easy way.

Lessons learned from GraphQL development: developer experience, benefits and concerns. Is GraphQL a must have, or is it overkill?

Client-side GraphQL is easier than client-side REST because the tools are better. But the additional features (caching, optimistic UI) bring some complexity. Overall, what is the GraphQL frontend developer experience?

In this tutorial, you'll learn the best practices of server-side GraphQL development, based on real-life experience. Covers the basics plus scalability, logging, unit tests, and modularity.

A gentle introduction full of examples and tips for GraphQL, the new way to build web services for mobile.

REST was a great idea, but with modern usage scenarios, it's become slow, expensive, and cumbersome. Do we need to replace it?

Beyond marketing, and because I believe that, in web development, there is no one-size fits all tool, I want to help developers answer this simple question: Is GraphQL a good fit for my next project?

Start a GraphQL Server based on your data in 30 seconds. No need to learn about Schema syntax or npm modules.

We release a minor version of admin-on-rest, the React admin GUI for REST APIs, every month. Here is a summary of the new features introduced during the past 2 months.

Admin interfaces are often multi-user, with custom permissions or roles per user. As this is a fairly common usecase, we decided to offer a well integrated solution for it in admin-on-rest.

I've been to the USI conference in Paris for the third time. As usual, talks were inspirational and related to technology, leadership, and creativity. Read on to get my takeaways.

Augmented Reality seems to be cpu intensive, hard to develop, and reserved to native technologies. Yet HTML5 and JS can provide an equivalent user experience. Read on to see how we developed a mobile app to help you draw (or tattoo) whatever you want.

When the time comes to animate a 3D scene in the browser with ThreeJS, do you prefer manual or declarative animation?

Jusqu'à présent, la ville de Caen était réputée pour sa scène rock (The Lanskies, Cannibale, Grand Parc) et electro (Baadman, Superpoze, Fakear). Mais elle risque également de le devenir pour son dynamisme autour de l'agilité.

Admin-on-rest, the frontend framework for admin interfaces based on React.js and Material Design, isn't only about REST. Read on to see how to plug it to a GraphQL backend.

We just came back from the React Europe Paris conference, a huge event where we saw the React ecosystem shaping of future of web and mobile development. Read on to see what we learned, loved, and laughed at.

Bilan d'un projet réussi pour le CNRS, mêlant Node.js, React.js, MongoDB, Docker, Material Design, et un processus de développement agile.

Following an Internationalization tutorial is generally quite straightforward. But what about implementing it in a real-world application? Here is a tested solution using context and provider.

Dans le post précédent, je vous ai parlé des générateurs et de leur fonctionnement. Aujourd'hui je vais vous parler de leur exécution et de ce qu'ils peuvent accomplir.

It's the first time there's a dot conference around AI theme. And since we always try to discover what’s behind new trends and technologies, we were there!

Et maintenant la Rolls Royce des serious games agiles, utilisée dans la plupart des formations et sessions de découverte de l'agilité.

Finally, admin-on-rest gets the stable grade! Read on to see what's new in this new release, the first major achievement of a project started eight months ago.

You don't need a server with a 100% uptime just to use the GitHub authentication. Here is a cheap and easy solution using AWS Lambda.

If you're using a Continuous Integration server, sooner or later a build will fail on the CI, but pass on your development machine. There are several ways to troubleshoot such failures - but relaunching the CI build isn't one of them.

Retour d'expérience sur Next.js

After being stuck for a few hours because of some Babel configuration issues in an isomorphic app, we finally discovered the Babel `env` property. It allows to apply some sort of conditional configuration, depending on a given environment variable.

Retour d'expérience sur le développement d'une application mobile Android avec React Native

I found the credentials of a Red Hat solution architect and was able to log into their Ravello Systems account. Can this teach us something about security?.

Les générateurs sont une fonctionnalité introduite dans ES6 qui permet de créer des fonctions spéciales avec la capacité de mettre en pause leur exécution en retournant un résultat intermédiaire.

I've only spent a day at #play14 Luxembourg 2017, but I've learned so much that I recommend it warmly. If you're looking at a way to improve your soft skills through games, this unconference is a must.

Un outil de plus dans la panoplie des développeurs web ? Les services workers offrent bien plus que la simple possibilité de rendre une application disponible hors-ligne. Voyons ça en pratique.

Nouveau challenge pour Maxime: développer un bot awale avec Go et Symfony.

Time for our monthly release: admin-on-rest, the React admin GUI for REST APIs, becomes responsive, and gets a handful of new features. Read on to see them in detail.

To facilitate typo fixes and simple code reviews, Sedy brings the power of the sed Linux command to Github comments.

Admin-on-rest, the React admin GUI for REST APIs, is approaching 1.0. But what can it do for you? A video and a live demo will give you a taste of its delightful features.

When we develop web or mobile apps, sometimes a User Story takes much more than estimated. What can we learn from that?

The Maze est un des meilleurs jeux de mise en situation "grandeur nature", où les équipes doivent traverser un labyrinthe matérialisé par un quadrillage au sol.

Taking a picture from a browser using the webcam is not trivial as it may seem. It requires a low supported API and some canvas manipulation. Here is the missing how-to.

Admin-on-rest, the React admin GUI for REST APIs, hits its last 0.X version before the stable release. With translations, image input, authentication, and easier customization, admin-on-rest is getting very close to the 1.0 milestone.

Le jeu Awalé en python, première semaine d'intégration.

Maxime a cinq ans d'expérience en .Net et nous rejoint dans le bureau de Nancy. Découvrez le visage du nouveau développeur marmelab.

Docker is awesome. Yet, it brings some common pitfalls, especially when you need to handle file permissions correctly, or need to use SSH. Here are some solutions to counter these issues.

React is slow - just like other frontend frameworks. But if you care about performance, it's fairly easy to make any React application super fast. Here is how.

Marmelab était présent à la conférence Lean Kanban France édition 2016. Une session nous a particulièrement marqué : Des startups dans l'Etat.

The first stable version of ng-admin, the AngularJS-powered admin GUI for RESTful APIs, is finally out. After almost three years of development, we are proud to release the 1.0 version, ready for production.

Chez Marmelab, chaque démarrage projet est précédé d'une phase d'initialisation. Voici la recette.

Admin-on-rest, the React admin GUI for REST APIs, gets about one new major release per month. Here are the highlights of versions 0.6 and 0.7, the last of which was just released.

Depuis le 1er janvier 2017, la base SIRENE des entreprises de France est en Open Data. Mais comme Excel ne sait pas charger un CSV de 8 Go, il va falloir faire appel à SQL. Voici la recette.

Setting up Selenium for e2e tests isn't hard, but requires an HTTP server to serve the HTML and JS files that you want to test. What if you could avoid this complexity?

We attended to the DotJS 2016 at Paris two weeks ago. Here is our feedback about this event.

Cette semaine, c'est un projet plutôt atypique qui m'attend. Le développement d'un jeu d'Othello dans le navigateur et tout cela en Isomorphique et avec React. L'occasion de découvrir un principe encore assez peu répandu.

Nous avons développé un coach virtuel pour arrêter de fumer par SMS. En fait, un chatbot utilisant Node.js et serverless. Nous avons beaucoup appris au passage. Ce post est le condensé de nos apprentissages.

Nous avons tous besoin de trouver du sens dans ce que nous faisons. Nous choisissons de donner de notre temps pour les associations. Découvrez pourquoi nous le faisons, et comment postuler, dans cet article.

All Node.js developers know the npm install command to grab their favorite dependencies. What about the lesser known npm commands?

Après Othello dans le terminal et Othello sur Facebook, c'est au tour d'Othello mobile (android) de passer sur le devant de la scène grâce à React Native et Redux.

Après une première version jouable dans le terminal, voici la version Facebook messenger du célèbre jeu d'Othello. Au programme, un serveur de bot sous Symfony 3 et une intelligence artificielle en GO !

We all need a sense of purpose in do. We choose to give some of our time to charity. Read on to understand why, and how to apply.

Le comic strip 'pigs & chicken', couramment utilisé dans les formations agiles pour décrire les rôles dans Scrum est devenu un jeu. Explication.

The development of admin-on-rest, the React admin GUI for REST APIs, continues at a fast pace: we've shipped one release per month for the past two months. Read on to see what's new.

Première semaine d'intégration, premier challenge, un jeu d'Othello développé en Python entièrement jouable dans le terminal

Julien est Lead Developer, et il vient renforcer l'équipe de développement de marmelab à Nancy. Gageons que son exigence de qualité collera avec les valeurs de marmelab !

Toute l'équipe a participé au Serious Game appelé Team Responsibility Game. Petite leçon de vivre ensemble.

Let's explore how to manage WebSocket with Django Channels and React with a concrete project!

While developing a React component for admin-on-rest, I stumbled upon a fun use case that demonstrates the power of redux-saga. Read on to see if Saga can help you, too.

L'intelligence collective au service de la cité : et le numérique dans tout ça ? Deux jours à Nancy pour inventer ensemble.

Marmelab has always been keen on open-source. Sharing knowledge and tools is one of our main mottos. That's why we decided to take part in the Hacktober Fest 2016!

Episode 2 ! Reprendre les concepts de développement du web pour faire du natif avec une codebase presque partagée... React native réinvente la façon de faire du cross-plateforme, ou presque !

Sometimes in complex React applications, groups of pages follow the same pattern. React router can be tweaked to offer a custom Route component, and avoid repetition.

Première semaine parmi les équipes marmelab, premier challenge de la période d'intégration, 4 jours pour mettre au point un serveur de jeu puissance 4.

Un nouveau développeur rejoint notre bureau de Nancy. Mieux qu'un développeur, un Software Craftsman ! Découvrez le parcours de notre nouvelle recrue.

If you like ng-admin, you will love admin-on-rest. We've built up on two years of experience with frontend admin frameworks to design and develop a powerful React app.

Each time you change the code of a SPA in production, connected users should be invited to refresh. If that seems easy to achieve, the simplest solution (AJAX polling) is also the worst, at least on mobile.

Après un premier essai de résolution du jeu snake en Python, marmelab me lance sur une version JavaScript, avec un nouvel algorithme. Bilan de mes découvertes.

The truth about the lifecycle of the not well maintained restful.js

Au-delà des fantasmes sur la blockchain, on ne la comprend vraiment qu'après l'avoir essayée. Notre vision est qu'il s'agit d'une solution très bancale à un problème très rare. Etes-vous sûr(e) d'avoir vraiment besoin d'une blockchain ?

We attended to the AWS Summit 2016 at Paris two weeks ago. Here is our feedback about this cloud-focused event.

Beyond the buzz around the blockchain, there are many things that you only discover after trying to use it, and that make the blockchain a very impractical solution to a very rare problem. Are you sure you need a blockchain?

Mon premier défi : 5 jours pour dompter un serpent avec un autre. Est-il possible de résoudre le jeu Snake en python avec un algorithme simple de recherche de chemin?

How hard is it to build a decentralized ad server on top of the Ethereum blockhain? How does it look like? Get practical advice based on our experience building a real life project with the blockchain.

Tout le monde en parle mais personne n'y comprend vraiment grand chose. Allez, on essaie de vous expliquer ce que c'est, comment ça marche, et à quoi ça sert.

March 2016. Third edition of #play14, unconference about facilitation, innovation, change management and happiness through games. Here is what happened.

It sounds exciting but it's complicated. Read on to understand the what, the how and the why of blockchains.

How do you write a financial business plan and determine the moment where your startup will make money? How much can an average SaaS business make? Here is a step-by-step introduction to the simple math involved early financial forecasts for startups.

Testing single-page-apps using a browser is a must. Selenium can look intimidating, but it's really easy to use - once you handle asynchronous commands the right way.

When it's time to go public, design the first version of your product as an experimentation to make sure you reached a product-market fit.

Time for a pivot! Let's write a new Business Model based on what we've learned with the demo and the customer interviews.

After experimenting through a demo, and gathering data on our most risky assumption, it's time to draw conclusions.

After a long delay, EventDrops 0.2 has finally been released. It includes a full code reworking, metaballs and an interactive demo. Check it out!

Voici le modèle de nos projets JavaScript full-stack. Le meilleur des technologies actuelles (React, Redux, Koa.js, ng-admin) mêlé aux bonnes pratiques dictées par l'expérience. Et c'est open-source !

All we did from now did not result to clear desire from customers.

Good projects are automated projects. But documenting all those Make targets in a README file doesn't make much sense, when you can make the Makefile auto-documented.

Screencasts make great demos. But how can you film a product that doesn't exist yet?

To publish a demo, a product needs a name. The final name will probably change, so you shouldn't invest more than 1 hour to find a name at that point.

Sometimes you have to code on Windows: this can be because of a personal challenge, or because you lost a bet, or because you don't have a choice. And it can be a bit painful when you are used to a powerful terminal. But some good solutions exist, as we'll see.

Building an MVP is expensive. To maximize learning, you can take a smaller step, and build a demo first. Our demo is going to be a landing page.

To continue learning we now have to build things. Enter Experiments, the Build-Measure-Learn loop.

A great way to learn where to go is to look at what the competitors do. This exercise is called competitive benchmark. Let's see this in practice with Admin-as-a-service.

How we designed our Persona from the problem interviews results.

For the second Problem interview, we chose to meet Gilles Caumont, the President of Adista.

Retour sur le développement d'une application mobile iOS et Android pour le compte de la Direction des Services Client de Canal+.

For our first run into the Problem Interview, we chose to speak with Anthony Sollinger and Nicolas Drouet from CloudScreener

Vous pensiez qu'un pythoniste n'a pas sa place chez marmelab? La preuve du contraire avec Kevin!

How to test assumptions as early as possible with zero investment? Let's ask customers directly!

How to use Webpack HTML plug-in to leverage your template usage? And an extra bonus: how to generate a whole static website using only Webpack.

Not all business assumptions are equal. In a Lean Startup process, we must identify the most risky assumptions to test them first.

Are you familiar with the Business Model Canvas and the Lean Canvas? We used one of them to describe our business idea.

How does a product idea come up? How can you say if it's an idea worth following?

We've run a Lean Startup experiment in 2015. We learned a lot. This is the first post of a series to share these learnings.

Most Redux tutorials encourage a directory structure which I find hard to cope with in large projects. I suggest an alternative directory structure, grouping files by domain

Session de découverte de l'agilité, au travers des Serious games, dans le cadre des 10 ans du ForumPHP.

Making Meteor works with Webpack, React and Redux: Reactivity everywhere !

Here is my report of Lean Kanban France 2015, the 4th parisian edition of this great 2-days conference, which I attended a few days ago.

Pour ma première semaine chez marmelab, j'ai dû reproduire le jeu Dobble en PHP, non sans mal !

Each new ng-admin release brings a lot of features and help developers build more sophisticated admin interfaces, faster. Version 0.9 is no exception - it's probably the most ambitious release ever. Read on to see what's new.

Using Docker in staging or production environment is great. But what about your data backups? Here is a how-to tutorial to dump your dockerized databases on Amazon S3.

To showcase the possibilities of ng-admin, we needed a more complete demo. How about a complete e-commerce administration? Introducing Posters Galore, your new favorite poster shop.

The development of ng-admin, the client-side admin GUI running on top of any REST API, continues at a steady pace. Read on to see the ton of new features coming in v0.8.

In this Three.js tutorial, we are going to see how to import a modeled mesh from Blender to our scene, animating it with some basic rotations.

Jest is the de facto unit testing framework for ReactJS project. It is provided and used by Facebook themselves. You will see how and why we use it on the react-admin project, the difficulties we met, and some useful tips for setting it up correctly.

Alors que la plupart des sociétés de service continuent à vendre le plus de jours.homme possible, marmelab a choisi de vendre un package plus ambitieux. Il est aussi plus risqué. Qu'est-ce qu'il contient ? A qui s'adresse-t-il ? Et est-ce que ça marche ?

On Monday, I attended the DotScale 2015, one of the DotConferences series. Here are my impressinos about the talks.

Two weeks ago, we attended the PHP Tour 2015, organized by AFUP in Luxembourg. Here is a summary of each talk we saw.

Webpack is really a great JavaScript bundler, allowing to turn messy and numerous JavaScript into a single minified and optimized script. Yet, we missed a good getting started tutorial. Here is one, using ES6 React app with SASS.

marmelab is glad to show you a list of useful REST resources to help developers in creating or consuming RESTful API.

Continuing on the path of a feature-complete admin generator, the latest release of nf-admin offers much awaited features and many stability improvements.

Générer un jeu de 55 cartes avec 8 symboles uniques par carte, où chaque paire de carte n'a qu'un seul symbole en commun (oui, c'est Dobble), le tout en TDD avec ES6. Facile ? Pas si facile.

Un nouveau développeur web expérimenté, doublé d'un architecte logiciel, vient de rejoindre marmelab. Il est aussi très fort en Parkour.

How do you manage E2E testing of webapps relying on RESTful web services? Instead of setting up a server with test data, why not do it directly in the browser? FakeRest allows to do backend-less e2e testing.

PostgREST is a lightning fast RESTful API on top of any PostgreSQL database. Ng-admin can plug to any RESTful API. What if we connected the two?

During more than a week, we worked hard to introduce some EcmaScript6, the future of JavaScript, to ng-admin. Here is how we transpiled our code to ES5, to ensure every browser understands our code.

Do you know Restangular, the Angular.js service that simplifies common GET, POST, DELETE, and UPDATE requests with a minimum of client code? It's excellent, except that it's Angular-only. We have developed a similar library in pure JavaScript. With no framework dependency, you can use it anywhere, especially in your React single-page applications.

Marmelab se renforce en pilotage de projet agile grâce à l'arrivée de Yann, coach agile et scrummaster très expérimenté et très chaleureux

Less than a month after the previous release, ng-admin 0.6 is here with a better configuratino API and the ability to add custom types

One of our mottos at marmelab is <em>convention over configuration</em>. Here is an example of how we apply this philosophy, using Symfony2, Stan Lemon's REST bundle, ng-admin, and a brand new bundle called `NgAdminGeneratorBundle`.

We've been hard at work during the past two months, making ng-admin even more configurable. It can now consume RESTful APIs in any format thanks to a powerful mapping engine, and you can completely theme it to your colors.

Go is quite good for asynchronous tasks. So, let's experiment it with websockets, creating a (basic) collaborative text editor, GollabEdit.

You don't need a drawing app to create a software map anymore. Meet ArchitectureTree, a visualization combining d3.js and Angular.js for demanding architects.

Batch requests is a common practice to minimize API response time. We're publishing a new library to make it possible on web services written in PHP.

If you have a database, you're not far from also having a REST API. All it takes is a PHP microserver written in Silex, a description of your model written in YAML... and 5 minutes of your time.

Following microservices leads to a virtuous architecture, but to a nightmare for human users. What if we could do something about it, using a web application dedicated to backend administration?

We've been producing open-source code on GitHub for the past 2 years. Guess what? Some of it is really good!

Protractor is the de facto standard for end-to-end tests on AngularJS applications. I spent two days bootstraping it on ng-admin project.

We're releasing a new version of ng-admin, introducing a nicer GUI, a nicer config API, and tons of new features. Read on to learn what's new.

One of the best way to secure an API is JSON Web Tokens. As understanding a concept passes by experimenting it, here is a post describing how to forge such a token in JavaScript.

The DotJs conference took place on november 17th in Paris. Many great JavaScript evangelists were announced, but I expected their presentations to be much more interesting.

ng-admin can now differentiate your field for each type of view. For the occasion, we're releasing a new version.

Le PHP est-il un langage de choix pour relever le défi de l'innovation ? Compte-rendu sélectif de ce qu'en a dit la communauté PHP réunie au Beffroi de Montrouge le 23 et 24 octobre dernier.

Making an orchestration tool for Docker containers was a good idea, until Docker bought another one

We've built a middleware for the koa framework. It allows to multiplex several requests to a REST API in a single HTTP request. Read on to learn its usage.

Peut-on facilement et rapidement améliorer la classique commande `tree` grâce au langage Go ? Nancy étant dans les cartons, c'est Paris qui s'y colle pour cette journée de Hackday.

Près de deux ans après son emménagement dans les locaux d'ARTEM, marmelab vient d'emménager dans un nouveau local.

"Afficher graphiquement l'occupation disque d'un répertoire dans la console en Javascript" : l'énoncé du problème est très motivant. Mais après 5 jours à en tenter l'implémentation, peut-on dire que node.js et d3.js sont utilisables pour des rendus graphiques dans un terminal ? Oui. Mais ...

Last week, I've been working on ng-admin to introduce new field types and allow application customization

Retour d'expérience sur le développement d'une application mobile hybride, basée sur le service SensioLabsInsight, avec Angular.js, Ionic et PhoneGap

Quels enseignements tirer d'une semaine de découverte du langage Go par un PHPiste.

Alexis vient apporter ses 11 ans d'expérience dans le développement web aux projets d'innovation des clients de marmelab. Vous allez voir de quel bois il se chauffe !

Why spend time redeveloping an admin backend using PHP if you already have a RESTful API? Introducing ng-admin, an admin generator written entirely in JavaScript, supporting relationships, smart field types, and much more.

Single purpose containers for composer, bower, compass or capistrano are possible, but hard to manipulate. Read on to see how we use GNU make to seamlessly run any command line tool inside Docker.

Is it possible to develop generators in Golang? Sure! Here is an elegant way based on Fibonacci sequence.

At marmelab, we don't wait until a customer asks us to test a new piece of technology to use it. All our projects rely on at least one piece of technology we've never used before. Read on to see our benefits vs risk evaluation of this dangerous practice.

Go routines are ridiculously powerful. I realized it while adding new features to gaudi. Check out how I leverage their power to outperform a JavaScript implementation by far.

E-commerce websites with heavy traffic often require load balancers, memcache, and master/slave MySQL replication. gaudi helps to build this kind of architecture in minutes.

Using gaudi's visual configuration builder, setting up a multi-container development environment from scratch is more than painless: it's fun. Make sure you watch this amazing video!

The PHPCR Browser, initially released in late 2013, has been completely rewritten to improve performance and reliability, and to add support for tree edition.

How I used d3.js to help detect potentially dangerous code in a large codebase

Gaudi, the dev environment builder for Docker, has gotten lots of love lately. Read on to see all the new features we've added to improve your development workflows.

Symfony CMF is a new Content Management Framework based on Symfony 2. This project won the Symfony Open-Source Application Award 2013, and is used at marmelab for a project with more than 900K documents. Symfony CMF requires several third-party components...

Last week I released <a href="https://github.com/marmelab/gaudi">Gaudi</a>, an architecture builder for all your applications. Gaudi uses a configuration file (called <code>.gaudi.yml</code>) to create <a href="http://www.docker.io">Docker</a> containers for each component you need.

Web applications often use a lot of different components, such as MySQL, ElasticSearch, or Redis. Installing, running and maintaining theses servers can waste a lot of our time.

I’ve just finished my master degree in IT at TELECOM Nancy, and my internship at INRIA. I was wondering if I preferred to continue studying in thesis, or to start looking for a job.

During the last HackDay at&nbsp;<a href="http://marmelab.com/">Marmelab</a>, I wanted to give&nbsp;<a href="http://zephir-lang.com/">Zephir</a>&nbsp;a try. Zephir is a new language which eases the creation of C extensions for PHP.

Fraîchement diplômé de l'Ecole d'Ingénieurs Telecom Nancy, Robin Bressan a rejoint l'équipe mi novembre pour renforcer nos capacités de développement.

Just like every marmelab recruit, my first weeks are spent working on various new technologies (Node.js, ElasticSearch, MongoDb, etc) with real use cases.

Deux ans et demi en agence web (chez Nurun Nancy) ont permis à Daphné de s'aguerrir sur de nombreux projets pour des grands comptes de l'énergie, de la cosmétique, de l'alimentation pour nourrissons.

Ahoy sailor ! Let me tell you the story of <a href="http://www.docker.io/">Docker</a>, the LinuX Container (LXC) manager that you&#39;ve dreamt of for a long time.

Après une longue expérience dans les médias, Jérôme Macias a rejoint marmelab à la fin du mois d'août.

We keep hearing about the Internet of Things. The basic idea is simple, everyday objects (like a watch or even a toothbrush) will soon be connected to Internet, and will be able to communicate with each other.

For the past couple weeks, we've been working on a prototype mobile WebApp built in HTML5 and d3.js. The purpose was to test the performance of d3.js on mobile browsers.

Après un premier projet agile (Scrum, Lean Startup) réalisé par marmelab, nous avons demandé à Anthony Sollinger, co-fondateur de <a href="http://cloudscreener.com">CloudScreener.com</a>, de partager ses impressions.

Client-side MVC frameworks usually bind model elements with DOM elements. But for more graphical applications, the view layer cannot be restricted to div and span tags.

You can easily do inline editing in pure HTML, but how about enabling the same feature in SVG, and making it available on all major browsers?

CloudScreener.com, le site de diagnostic et comparaison de cloud computing développé par marmelab pour le compte de la startup CloudScreener, vient de sortir sa cinquième itération.

Nous sommes fiers d'annoncer la mise en ligne de notre premier site, <a href="http://www.cloudscreener.com">cloudscreener.com</a>, développé par marmelab pour la société CloudScreener.

Beaucoup de contrats au forfait se finissent mal pour le client. C’est que le forfait délègue le risque tout en le cachant. Heureusement, il y a une alternative.