Symfony Flex: Modern Symfony project management tool

Symfony Flex is not the next version of Symfony, but a modern alternative to Symfony Installer, which is a Composer plugin that modifies the behavior of require and update commands. Symfony can perform additional tasks before and after the Composer task execution when installing or updating dependencies. This article will explore Symfony Flex and its relationship with Symfony 4 upgrades.

Core points:

• Flex is not a new version: It is an enhancement tool, not a replacement for the Symfony framework. It simplifies the creation and configuration process of Symfony projects.
• Compatible with Symfony 4 upgrade: Flex compatible with Symfony 4 improvements, such as: PHP 7 requirements, optional directory structure (a more concise directory tree), web directory replaced with public directory, The temporary file is located in the /var directory under the root directory of the project, the source code is located in the /src directory, the configuration file is located in the /config directory, and the template is located in the /templates directory.
• Symfony certified packages (Recipes): Flex has its own set of Symfony certified packages, called Recipes. These official packages can be found in the Flex configuration. By recommending specific packages, Symfony becomes more "opinionated" (independent) and aims to regulate how Symfony applications are built.
• Simplify Bundle management: Flex automatically activates Bundle and sets basic layout views and configuration files. It also supports unofficial Bundles and third-party tools, but these require manual registration.

Still under development:

Symfony Flex and Symfony 4 are still under development (as of November 2017). Some of the features mentioned in this article may have been changed. In particular, the function of using Makefile and make tools to build projects when Symfony/Console is not available is not stable at present.

The difference from the past:

The main difference is Flex's compatibility with Symfony 4 update:

• PHP 7 requirements
• Optional Directory: Project does not need to include all directories.
• publicCatalog SubstitutionwebCatalog:Align with other mainstream frameworks.
• Temporary files are located in the /var directory: /var/cache subdirectory is used for long-term cache.
• Source code is located in the /src directory: no longer uses the /app directory.
• Configuration file is located in the /config directory:
• Template is located in /templatesCatalog:
• Recipes: Flex uses Recipes to manage Symfony certified packages. Enable community-contributed Recipes via composer config extra.symfony.allow-contrib true.
• Bundle Fragments: Flex automatically manages Bundle activation and removal.
• Environment variable alternative configuration file parameters: Similar to Laravel.

Quick Start:

Create projects using the Symfony Skeleton App:

composer create-project symfony/skeleton flexy

There are only

files in the /public directory. The environment type is determined by the environment variables and the configuration is read from the index.php directory. /config

Add Bundle:

composer req template

Flex will automatically activate Bundle and set the

directory and /templates file. config/packages/twig.yaml

Large Bundle:

For example, install EasyAdmin Bundle:

composer req admin

This requires database configuration.

Unofficial Bundle:

Recipes that require community contributions to be enabled first:

composer config extra.symfony.allow-contrib true

Then install the unofficial Bundle, such as Ramsey's UUID-Doctrine Bundle:

composer req ramsey/uuid-doctrine

Third-party tools:

Third-party tools require manual registration and removal.

Summary:

Symfony Flex is a modern way of installing and managing Symfony applications, and is a key step towards Symfony 4.

Symfony Flex FAQ:

• What is the main purpose of Symfony Flex? Symfony Flex is a modern Symfony project management tool that simplifies the creation and management of Symfony applications.
• How is the difference between Symfony Flex and Symfony frameworks? The Symfony framework is a complete web framework, and Symfony Flex is an administrative tool.
• How to install Symfony Flex? The new project is installed by default, and the old project is installed by using composer require symfony/flex.
• What is Symfony Flex Recipes? Recipes are automated instructions for installing and configuring Symfony Bundle.
• How to manage Bundle with Symfony Flex? Install with composer require, composer remove Remove.
• What Symfony versions are supported by Symfony Flex? Symfony 3.3 and above.
• How to contribute code to Symfony Flex? Create Recipes or contribute code to GitHub.
• What are the benefits of using Symfony Flex? Simplify and speed up the construction process of Symfony applications and encourage best practices.
• How does Symfony Flex handle environment variables? Use environment variables to manage application configuration.
• Can you use Symfony Flex without Recipes? Yes, but Recipes offers a lot of convenience.

Please note that the format of the picture remains the same.

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