Getting Started with Symfony 4 and Flex

Getting started with  Symfony 4 & Flex Denis Brumann [email protected]
@dbrumann

Denis Brumann Software Developer  Berlin, Germany [email protected] @dbrumann

Symfony Versions

Denis Brumann [email protected] @dbrumann Getting Started with Symfony 4 &
Flex

Flex Maintained Versions 2.8 3.4 4.0 4.1

Flex

Flex Symfony 3.4 Symfony 3.3  + Additional Features  + Deprecations LTS Release  3 years support Symfony 4.0 Symfony 3.3  + Additional Features  - Deprecations Standard Release  8 months support

Flex Symfony 4 != Flex You can use Symfony 4 without Flex • Upgrade PHP (>=7.1.3) • Remove deprecations • Upgrade symfony/symfony to ^4.0

Bootstrapping a Symfony application

Flex Symfony Standard Edition Symfony 2/3 applications were based  on the Symfony Standard Edition (SE). Symfony SE shipped with all components  and various bundles. Unused functionality is dormant or  must be removed.

Flex Symfony Flex • replaces Symfony Installer (symfony new) • Composer plugin • Autoconﬁgures bundles • Executes predeﬁned recipes • Removes changes from recipe on uninstall Functionality is downloaded when needed

Flex composer create-project \  symfony/framework-standard-edition:^3.3 \  my-app

Flex symfony new my-app 3.3

Flex composer create-project \  symfony/skeleton my-app

Flex

Flex composer create-project \  symfony/website-skeleton my-app

New  Directory Structure

Flex . ├── LICENSE ├── README.md ├── app ├── bin ├── composer.json ├── composer.lock ├── phpunit.xml.dist ├── src ├── tests ├── var ├── vendor └── web

Flex . ├── app ├── bin ├── composer.json ├── composer.lock ├── src ├── var ├── vendor └── web . ├── bin ├── composer.json ├── composer.lock ├── config ├── public ├── src ├── symfony.lock ├── var └── vendor

Flex dbr:skeleton/ (master*) $ bin/console list Symfony 4.0.9 (kernel: src, env: dev, debug: true) Usage: command [options] [arguments] Options: -h, --help Display this help message -q, --quiet Do not output any message -V, --version Display this application version --ansi Force ANSI output --no-ansi Disable ANSI output -n, --no-interaction Do not ask any interactive question -e, --env=ENV The Environment name. [default: "dev"] --no-debug Switches off debug mode. -v|vv|vvv, --verbose Increase the verbosity of messages: 1 for normal output, 2 for more verbose output and 3 for debug Available commands: about Displays information about the current project help Displays help for a command list Lists commands assets assets:install Installs bundles web assets under a public directory cache cache:clear Clears the cache cache:pool:clear Clears cache pools cache:pool:prune Prunes cache pools cache:warmup Warms up an empty cache config config:dump-reference Dumps the default configuration for an extension debug debug:autowiring Lists classes/interfaces you can use for autowiring debug:config Dumps the current configuration for an extension debug:container Displays current services for an application debug:event-dispatcher Displays configured listeners for an application debug:router Displays current routes for an application lint lint:yaml Lints a file and outputs encountered errors router router:match Helps debug routes by simulating a path info match

Flex app ├── AppCache.php ├── AppKernel.php ├── Resources │ └── views └── config ├── config.yml ├── config_dev.yml ├── config_prod.yml ├── config_test.yml ├── parameters.yml ├── parameters.yml.dist ├── routing.yml ├── routing_dev.yml ├── security.yml └── services.yml config ├── bundles.php ├── packages │ ├── dev │ │ └── routing.yaml │ ├── framework.yaml │ ├── routing.yaml │ └── test │ └── framework.yaml ├── routes.yaml └── services.yaml

Flex app_dev.php app.php index.php APP_ENV: dev | prod APP_DEBUG: true | false .env

Flex . ├── SymfonyRequirements.php ├── bootstrap.php.cache ├── cache │ └── dev ├── logs │ └── dev.log └── sessions var ├── cache │ └── dev └── log

Flex . └── AppBundle ├── AppBundle.php └── Controller └── DefaultController.php . ├── Controller └── Kernel.php formerly  app/AppKernel (without bundle registration)

Bundle-less  applications

Flex Your bundles will still work!

Flex What is a bundle? Bundles are intended to be reusable components for sharing features between applications. Bundles are Symfony's version of a plugin-system.

Flex Migrating a bundled application Move code to App\ and use namespaces for ordering functionality, e.g.  App\Controller\Backend\IndexController. Install bundles using composer.

Flex How to add functionality to a Flex project? Unlike Standard Edition, which came with ready-to-use bundles and default conﬁg,  new components/bundles are added on demand. Flex will automatically enable a bundle in all  appropriate environments and add necessary  conﬁguration through recipes & packs.

Flex What is a recipe? • Description of things to apply when a package is installed or to be removed on uninstall • maintained by Symfony Core team • stored in Github-repository: symfony/recipes • automatically applied via ﬂex-plugin

Flex

Flex Packs groups of several packages solving a common problem Recipes registers a bundle with optional conﬁguration, environment variables  and ﬁles

Flex

Flex What are a contrib-recipes? • maintained by the community • no guaranteed quality standard • open to recipes with certain OS licenses • recipes are not enabled by default

Flex

Dependency Injection Improvements

Flex services: # default configuration for services in *this* file _defaults: autowire: true # Automatically injects dependencies in your services. autoconfigure: true # Automatically registers your services as commands, event subscribers, etc. public: false # Allows optimizing the container by removing unused services; this also means # fetching services directly from the container via $container->get() won't work. # The best practice is to be explicit about your dependencies anyway. # makes classes in src/ available to be used as services # this creates a service per class whose id is the fully-qualified class name App\: resource: '../src/*' exclude: '../src/{Entity,Migrations,Tests,Kernel.php}' # controllers are imported separately to make sure services can be injected # as action arguments even if you don't extend any base controller class App\Controller\: resource: '../src/Controller' tags: ['controller.service_arguments']

Flex

Flex _defaults: autowire: true autoconfigure: true public: false

Flex App\: resource: '../src/*' exclude: '../src/{Entity,Migrations,Tests,Kernel.php}'

Flex

Flex App\Controller\: resource: '../src/Controller' tags: ['controller.service_arguments']

Flex

Flex App\Meetup\Mailer: arguments: $adminMail: '%env(ADMIN_MAIL)%'

Flex _defaults: bind: $adminMail: '%env(ADMIN_MAIL)%'

Flex

Getting Started with Symfony 4 and Flex

Getting Started with Symfony 4 and Flex

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