Symfony 4 in action (updated for 4.3)

1. Fabien Potencier @fabpot
2. Have you ever
 used Symfony? 1.x? 2.x? 3.x? 4.x?
3. What is Symfony 4? A new developer experience On a rock solid foundation From micro-style to monolith
4. 4 in action…
6. $ symfony new demo # Want to try Symfony 4.3 (dev version)? $ symfony new demo --version=dev-master
8. symfony/skeleton "require": { "php": "^7.1.3", "ext-ctype": "*", "ext-iconv": "*", "symfony/console": "*", "symfony/dotenv": "*", "symfony/flex": "^1.1", "symfony/framework-bundle": "*", "symfony/yaml": "*" },
9. $ symfony new demo --version=dev-master --debug Demo
10. $ symfony new demo --version=dev-master --debug Demo
11. $ symfony new demo --version=dev-master --debug Demo "scripts": { "auto-scripts": { "cache:clear": "symfony-cmd", "assets:install %PUBLIC_DIR%": "symfony-cmd" }, "post-install-cmd": [ "@auto-scripts" ], "post-update-cmd": [ "@auto-scripts" ] },
12. $ symfony new demo --version=dev-master --debug Demo
13. $ tree -I vendor $ find . -type f | wc -l Symfony 4 is lightweight Only 16 files vs 31 SE 3300 total vs 8867 SE -65%
14. New directory structure • Less depth, easier to navigate • Non-PHP files in their own directories (assets/, templates/) • Decoupled from Symfony (assets/, src/, templates/, public/)
15. https://github.com/symfony/recipes/
 tree/master/
 symfony/framework-bundle/4.2 Demo
16. Recipes repositories https://github.com/symfony/recipes Curated recipes by Symfony core team https://github.com/symfony/recipes-contrib Open to all contributions 370+ recipes
17. $ composer show | wc -l Demo Only 25 deps vs 38 + 50 = 88 SE
18. Symfony 2+/3+ Monolog Bundle SwiftMailer Bundle Polyfill Util Polyfill PHP 7.0 Polyfill PHP 5.6 Polyfill Mbstring Polyfill Intl ICU Polyfill APCu PHPUnit Bridge Debug Bundle Framework Bundle Security Bundle Twig Bundle WebProfiler Bundle WebServer Bundle Doctrine Bridge Monolog Bridge Twig Bridge Monolog Doctrine (11) SecurityChecker Generator Bundle ParamHandler FrameworkExtra Bundle Distribution Bundle Asset BrowserKit Cache ClassLoader Config Console CssSelector Debug DependencyInjection DomCrawler Dotenv EventDispatcher ExpressionLanguage Filesystem Finder Form HttpFoundation HttpKernel Inflector Intl Ldap OptionsResolver Process PropertyAccess PropertyInfo Routing Security Serializer Stopwatch Templating Translation Validator VarDumper WebLink Workflow Yaml 4 bridges 15 librairies 11 bundles 42 components SwiftMailer
19. Symfony 4+ Polyfill Mbstring Framework Bundle Cache Config Debug DependencyInjection Dotenv EventDispatcher Filesystem Finder HttpFoundation HttpKernel Routing Yaml 0 bridges 1 library 1 bundle 13 components Flex
20. $ symfony server:start -d $ symfony server:log Demo
21. Demo
22. $ ./bin/console Demo 15 commands vs 57 SE
23. $ git init $ git add . $ git commit -a -m"init" Demo
24. $ composer req maker Demo
25. Aliases • Shortcuts for common packages (log, behat, phpunit, …) • Optimized for Symfony Components (no need to use the symfony/ prefix, just workflow, dom-crawler, …) • Opinionated choices (admin, api, orm, mailer, test, …)
26. Packs • Bundle several dependencies into a consistent set (debug, profiler, api, test, …) $ composer req debug
27. Discover Aliases and Packs https://flex.symfony.com/
28. $ composer req maker $ git diff config/bundles.php Symfony Maker Bundle
29. $ ./bin/console list make Symfony Maker Bundle
30. $ ./bin/console make:controller Symfony Maker Bundle
31. $ composer req annot Symfony Maker Bundle
32. $ ./bin/console make:controller DefaultController Symfony Maker Bundle
33. $ vim src/Controller/DefaultController.php Symfony Maker Bundle src/ is about YOUR code
34. Symfony 4 helps you
 grow your app
 with ease
35. $ composer req twig Adding Twig
36. Never define
 your service again*
37. Adding a Twig Extension Where do I store the Twig extension class? Which file do I need to change to register it? Which tag do I need to use? How do I declare a tag in YAML? Which interface/class do I need to implement/ extend? It’s too complex. What about doing it the dirty way and do it in the controller instead? hmm, ok
38. $ ./bin/console make:twig-extension Adding a Twig Extension Add your logic in the generated class… DONE!
39. Full Automation works for… • Twig extensions • Event listeners • Doctrine repositories • Commands • Voters • Registration form system • …
40. Beyond “Hello World” • Defining some models via Doctrine • Adding an API for my model • Managing data with an admin
41. $ composer req orm admin api Full stack really quick
42. $ composer req orm admin api Full stack really quick
43. $ ./bin/console make:entity Product --api-resource Full stack really quick
44. $ vim config/packages/easy_admin.yaml Full stack really quick
45. $ vim .env DATABASE_URL="sqlite:///%kernel.project_dir%/var/ data.db" $ ./bin/console doctrine:database:create $ ./bin/console doctrine:schema:update --force Full stack really quick
46. It works! One line config change One annotation added
48. Typical features to the next level
49. I want to send emails
 from my controller
50. $ composer req symfony/mailer Symfony Maker Bundle use Symfony\Component\Mailer\MailerInterface; public function index(MailerInterface $mailer) { $mailer->send( (new Email()) ->from('fabien@symfony.com') ->to('fabien@symfony.com') ->subject('Some subject') ->text('Some text...') ); MAILER_DSN=smtp://localhost
51. I want to send rich emails
 from my controller
52. Symfony Maker Bundle use Symfony\Component\Mailer\MailerInterface; public function index(MailerInterface $mailer) { $mailer->send( (new TemplatedEmail()) ->from('fabien@symfony.com') ->to('fabien@symfony.com') ->subject('Some subject') ->htmlTemplate('@emails/welcome.html.twig') ->context([ 'city' => 'Tunis' ]) ); MAILER_DSN=smtp://localhost
53. I want to send rich and responsive emails
 from my controller
54. $ composer req twig/inky-extension Symfony Maker Bundle MAILER_DSN=smtp://localhost {% apply inky|inline_css(source("@zurb/stylesheets/main.css")) %} <container> <row class="header"> <columns> <spacer size="16"></spacer> <h4 class="text-center">Symfony Connect</h4> </columns> </row> <row> <columns> <spacer size="32"></spacer> <center><img width="100px" src="{{ email.image("@images/symfony.png") }}"></center> <spacer size="16"></spacer> <h1 class="text-center">Forgot Your Password?</h1> <spacer size="16"></spacer> <p class="text-center">It happens. Click the link below to reset it.</p> <button class="large expand" href="#">Reset Password</button> <hr/> <p><small><center><a href="#">unsubscribe here</a>.</small></center></p> </columns> </row> </container> {% endapply %}
55. I want to send rich and responsive emails
 from my controller
 via my provider's API
56. $ composer req symfony/mailgun-mailer MAILER_DSN=http://key:domain@mailgun Symfony Maker Bundle Amazon SES Google Gmail Mandrill Mailgun Postmark Sendgrid
57. I want to send rich and responsive emails
 from my controller
 via my provider's API
 asynchronously
58. $ composer req messenger framework: messenger: transports: email: "doctrine://default" routing: Symfony\Component\Mailer\Messenger\SendEmailMessage: email $ ./bin/console messenger:consume Symfony Maker Bundle
59. I want to send rich and responsive emails
 from my controller
 via my provider's API
 asynchronously with AMQP
60. $ composer req messenger framework: messenger: transports: email: "amqp://guest:guest@localhost:5672/%2f/messages" routing: Symfony\Component\Mailer\Messenger\SendEmailMessage: email $ ./bin/console messenger:consume Symfony Maker Bundle
61. Symfony 4 recap • Auto-configuration for any Composer package • A Maker bundle to simplify creating files • No boilerplate code, just business logic • Controllers and commands as services • From micro to monolith • Meta-packages doing a lot for you out of the box Productivity boost! Better DX
62. Why?
63. Featureful and the most downloaded
64. The most advanced API solution https://api-platform.com/
65. The most advanced e-commerce solution
66. Many admin-gen solutions https://github.com/EasyCorp/EasyAdminBundle
67. The foundation of the PHP ecosystem
68. $ composer require symfony/console Truly independent components (new Console\Application('echo', '1.0.0')) ->register('echo') ->addArgument('foo', Console\Input\InputArgument::OPTIONAL, 'The directory') ->addOption('bar', null, Console\Input\InputOption::VALUE_REQUIRED) ->setCode(function(Console\Input\InputInterface $input, Console\Output\OutputInterface $output) { // output arguments and options }) ->getApplication() ->setDefaultCommand('echo', true) // Single command application ->run();
69. • CssSelector • Debug • Dotenv • Finder • Mailer • Mime • sMessenger • Polyfill : APCu, ctype, iconv, intl, mbstring, PHP, … • Process • VarDumper • VarExporter • Yaml • … Truly independent components
70. Predictable releases and support https://symfony.com/releases •Every month: a patch release •Every 6 month: a minor release •Every 2 years: a major release •On the go: security releases
71. Predictable releases and support Release end of support +8 months +14 months +36 months +48 months end of security support end of security support end of support Standard Releases (3.3, 4.0) LTS Releases (2.8, 3.4)
72. Predictable releases and support 3.4 LTS 4.2 Stable https://symfony.com/releases
73. Stability and predictability • Strict semantic versioning • Deprecation/BC policy • Responsible security issue management https://symfony.com/bc https://symfony.com/security
74. The fastest framework around x2 x3 x4 http://www.phpbenchmarks.com/
75. Scale from micro to monolith 13 files 15 dependencies start with … and grow as you see fit via automation
76. Community oriented • Code of conduct
 https://symfony.com/conduct • Enforced by the CARE team
 https://symfony.com/care • Respectful Review Comments
 https://symfony.com/doc/current/contributing/community/review-comments.html Diversity initiative
 https://symfony.com/diversity
77. https://symfony.com/4
78. Thank you!