An introductory Symfony2 talk given at PHP Matsuri in Tokyo, Japan.

1. A Practical Introduction
to Symfony2
Kris Wallsmith
PHP Matsuri • October 2, 2010
Saturday, October 2, 2010

2. @kriswallsmith
• Release Manager for symfony 1.3 & 1.4
• Doctrine contributor
• Senior Software Engineer at
• 10 years experience in web development
• Open source evangelist and international speaker
Saturday, October 2, 2010

3. the evolution of symfony
• Mojavi 3
• symfony (2007)
• Symfony2 (2011)
Saturday, October 2, 2010

4. a quick note for the
case-sensitive among us
Saturday, October 2, 2010

5. talk about “symfony”
Saturday, October 2, 2010

6. talk about “symfony 1”
Saturday, October 2, 2010

7. talk about “Symfony2”
Saturday, October 2, 2010

8. there is no “Symfony 1”
Saturday, October 2, 2010

9. there is no “symfony 2”
Saturday, October 2, 2010

10. there is no “Symfony 2”
Saturday, October 2, 2010

11. there is no “Symfony 2”
{
less search-friendly
Saturday, October 2, 2010

12. Symfony2
Saturday, October 2, 2010

13. # Symfony2
Saturday, October 2, 2010

14. the evolution of symfony
• Mojavi 3
• symfony (2007)
• Symfony2 (2011)
Saturday, October 2, 2010

15. what’s old?
Saturday, October 2, 2010

16. what’s old?
• same philosophy as symfony 1
Saturday, October 2, 2010

17. what’s old?
• same philosophy as symfony 1
• don’t reinvent the wheel
Saturday, October 2, 2010

18. what’s old?
• same philosophy as symfony 1
• don’t reinvent the wheel
• loosely-coupled components
Saturday, October 2, 2010

19. what’s old?
• same philosophy as symfony 1
• don’t reinvent the wheel
• loosely-coupled components
• predictable conventions
Saturday, October 2, 2010

20. what’s old?
• same philosophy as symfony 1
• don’t reinvent the wheel
• loosely-coupled components
• predictable conventions
• highly configurable
Saturday, October 2, 2010

21. what’s old?
• same philosophy as symfony 1
• don’t reinvent the wheel
• loosely-coupled components
• predictable conventions
• highly configurable
• testable
Saturday, October 2, 2010

22. what’s old?
• same philosophy as symfony 1
• don’t reinvent the wheel
• loosely-coupled components
• predictable conventions
• highly configurable
• testable
• awesome developer tools
Saturday, October 2, 2010

23. what’s new?
Saturday, October 2, 2010

24. what’s new?
• PHP 5.3
• a brand new foundation
Saturday, October 2, 2010

25. what’s new?
• PHP 5.3
• a brand new foundation
• more smart, more lazy
Saturday, October 2, 2010

26. what’s new?
• PHP 5.3
• a brand new foundation
• more smart, more lazy
• REALLY REALLY FAST
Saturday, October 2, 2010

27. what’s new?
• PHP 5.3
• a brand new foundation
• more smart, more lazy
• REALLY REALLY FAST
Saturday, October 2, 2010

28. PHP 5.3
Saturday, October 2, 2010

29. PHP 5.3
• namespaces
• closures
Saturday, October 2, 2010

30. Saturday, October 2, 2010

31. HTTPMessageRequest
Saturday, October 2, 2010

32. HTTPMessageRequest
Saturday, October 2, 2010

33. Saturday, October 2, 2010

34. Saturday, October 2, 2010

35. Saturday, October 2, 2010

36. HTTPClientRequest
Saturday, October 2, 2010

37. HTTPClientRequest
Saturday, October 2, 2010

38. Saturday, October 2, 2010

39. Saturday, October 2, 2010

40. Saturday, October 2, 2010

41. Saturday, October 2, 2010

42. Saturday, October 2, 2010

43. Saturday, October 2, 2010

44. Saturday, October 2, 2010

45. closures
• anonymous functions
• lambda functions
Saturday, October 2, 2010

46. Saturday, October 2, 2010

47. Saturday, October 2, 2010

48. Saturday, October 2, 2010

49. Saturday, October 2, 2010

50. Saturday, October 2, 2010

51. a new foundation
Saturday, October 2, 2010

52. anatomy of a Symfony2 request
Saturday, October 2, 2010

53. anatomy of a Symfony2 request
• Kernel
Saturday, October 2, 2010

54. anatomy of a Symfony2 request
• Kernel
• Request
Saturday, October 2, 2010

55. anatomy of a Symfony2 request
• Kernel
• Request
• Controller
Saturday, October 2, 2010

56. anatomy of a Symfony2 request
• Kernel
• Request
• Controller
• Response
Saturday, October 2, 2010

57. anatomy of a Symfony2 request
Saturday, October 2, 2010

58. anatomy of a Symfony2 request
• index.php creates a Kernel
Saturday, October 2, 2010

59. anatomy of a Symfony2 request
• index.php creates a Kernel
• the kernel creates a Request
Saturday, October 2, 2010

60. anatomy of a Symfony2 request
• index.php creates a Kernel
• the kernel creates a Request
• the kernel passes the Request to the ControllerResolver
Saturday, October 2, 2010

61. anatomy of a Symfony2 request
• index.php creates a Kernel
• the kernel creates a Request
• the kernel passes the Request to the ControllerResolver
• the ControllerResolver returns a callable
Saturday, October 2, 2010

62. anatomy of a Symfony2 request
• index.php creates a Kernel
• the kernel creates a Request
• the kernel passes the Request to the ControllerResolver
• the ControllerResolver returns a callable
• the kernel calls the callable
Saturday, October 2, 2010

63. anatomy of a Symfony2 request
• index.php creates a Kernel
• the kernel creates a Request
• the kernel passes the Request to the ControllerResolver
• the ControllerResolver returns a callable
• the kernel calls the callable
• the callable returns a Response
Saturday, October 2, 2010

64. Silex
http://github.com/fabpot/Silex
Saturday, October 2, 2010

65. just enough, nothing more
Saturday, October 2, 2010

66. Saturday, October 2, 2010

67. switch ($_GET['pg'])
case 'edit':
// ...
Saturday, October 2, 2010

68. switch ($_GET['pg'])
case 'edit':
// ...
Saturday, October 2, 2010

69. Any volunteers to rewrite
WordPress in Silex?
Saturday, October 2, 2010

70. quick tour
Saturday, October 2, 2010

71. frontend/
src/
web/
Saturday, October 2, 2010

72. frontend/
FrontendKernel.php
cache/
config/
console
logs/
phpunit.xml
Saturday, October 2, 2010

73. src/
autoload.php
Application/
Bundle/
vendor/
symfony/
doctrine/
Saturday, October 2, 2010

74. web/
css/
images/
index.php
index_dev.php
js/
Saturday, October 2, 2010

75. ../
MainBundle/
Controller/
MainBundle.php
Resources/
config/
views/
Tests/
Saturday, October 2, 2010

76. How do I use it?
Saturday, October 2, 2010

77. # frontend/config/routing.yml
homepage:
pattern: /
defaults:
_controller: MainBundle:Main:index
requirements:
_method: get
Saturday, October 2, 2010

78. // src/Application/MainBundle/Controller/MainController.php
namespace ApplicationMainBundleController;
class MainController extends Controller
{
public function indexAction()
{
return $this->render('MainBundle:Main:index.php');
}
}
Saturday, October 2, 2010

79. homepage:
pattern: /
defaults:
_controller: MainBundle:Main:index
requirements:
_method: get
namespace ApplicationMainBundleController;
class MainController extends Controller
{
public function indexAction()
{
return $this->render('MainBundle:Main:index.php');
}
}
Saturday, October 2, 2010

80. homepage:
pattern: /
defaults:
_controller: MainBundle:Main:index
requirements:
_method: get
namespace ApplicationMainBundleController;
class MainController extends Controller
{
public function indexAction()
{
return $this->render('MainBundle:Main:index.php');
}
}
Saturday, October 2, 2010

81. homepage:
pattern: /
defaults:
_controller: MainBundle:Main:index
requirements:
_method: get
namespace ApplicationMainBundleController;
class MainController extends Controller
{
public function indexAction()
{
return $this->render('MainBundle:Main:index.php');
}
}
Saturday, October 2, 2010

82. homepage:
pattern: /
defaults:
_controller: MainBundle:Main:index
requirements:
_method: get
namespace ApplicationMainBundleController;
class MainController extends Controller
{
public function indexAction()
{
return $this->render('MainBundle:Main:index.php');
}
}
Saturday, October 2, 2010

83. homepage:
pattern: /
defaults:
_controller: MainBundle:Main:index
requirements:
_method: get
namespace ApplicationMainBundleController;
class MainController extends Controller
{
public function indexAction()
{
return $this->render('MainBundle:Main:index.php');
}
}
Saturday, October 2, 2010

84. homepage:
pattern: /
defaults:
_controller: MainBundle:Main:index
requirements:
_method: get
namespace ApplicationMainBundleController;
class MainController extends Controller
{
public function indexAction()
{
return $this->render('MainBundle:Main:index.php');
}
}
Saturday, October 2, 2010

85. homepage:
pattern: /:year/:slug
defaults:
_controller: MainBundle:Blog:showArticle
requirements:
year: d{4}
namespace ApplicationMainBundleController;
class BlogController extends Controller {
public function showArticleAction($slug, $year) {
// ...
return $this->render('MainBundle:Blog:showArticle.php',
array('article' => $article));
}
}
Saturday, October 2, 2010

86. homepage:
pattern: /:year/:slug
defaults:
_controller: MainBundle:Blog:showArticle
requirements:
year: d{4}
namespace ApplicationMainBundleController;
class BlogController extends Controller {
public function showArticleAction($slug, $year) {
// ...
return $this->render('MainBundle:Blog:showArticle.php',
array('article' => $article));
}
}
Saturday, October 2, 2010

87. homepage:
pattern: /:year/:slug
defaults:
_controller: MainBundle:Blog:showArticle
requirements:
year: d{4}
namespace ApplicationMainBundleController;
class BlogController extends Controller {
public function showArticleAction($slug, $year) {
// ...
return $this->render('MainBundle:Blog:showArticle.php',
array('article' => $article));
}
}
Saturday, October 2, 2010

88. homepage:
pattern: /:year/:slug
defaults:
_controller: MainBundle:Blog:showArticle
requirements:
year: d{4}
namespace ApplicationMainBundleController;
class BlogController extends Controller {
public function showArticleAction($slug, $year) {
// ...
return $this->render('MainBundle:Blog:showArticle.php',
array('article' => $article));
}
}
Saturday, October 2, 2010

89. homepage:
pattern: /:year/:slug
defaults:
_controller: MainBundle:Blog:showArticle
requirements:
year: d{4}
namespace ApplicationMainBundleController;
class BlogController extends Controller {
public function showArticleAction($slug, $year) {
// ...
return $this->render('MainBundle:Blog:showArticle.php',
array('article' => $article));
}
}
Saturday, October 2, 2010

90. MainBundle/Resources/
config/
views/
Blog/
showArticle.php
Main/
error404.php
index.php
layout.php
Saturday, October 2, 2010

91. return $this->render('MainBundle:Blog:showArticle.php',
array('article' => $article));
MainBundle/Resources/
config/
views/
Blog/
showArticle.php
Main/
error404.php
index.php
layout.php
Saturday, October 2, 2010

92. return $this->render('MainBundle:Blog:showArticle.php',
array('article' => $article));
MainBundle/Resources/
config/
views/
Blog/
showArticle.php
Main/
error404.php
index.php
layout.php
Saturday, October 2, 2010

93. return $this->render('MainBundle:Blog:showArticle.php',
array('article' => $article));
MainBundle/Resources/
config/
views/
Blog/
showArticle.php
Main/
error404.php
index.php
layout.php
Saturday, October 2, 2010

94. return $this->render('MainBundle:Blog:showArticle.php',
array('article' => $article));
MainBundle/Resources/
config/
views/
Blog/
showArticle.php
Main/
error404.php
index.php
layout.php
Saturday, October 2, 2010

95. return $this->render('MainBundle:Blog:showArticle.php',
array('article' => $article));
MainBundle/Resources/
config/
views/
Blog/
showArticle.php
Main/
error404.php
index.php
layout.php
Saturday, October 2, 2010

96. return $this->render('MainBundle:Blog:showArticle.php',
array('article' => $article));
MainBundle/Resources/
config/
views/
Blog/
showArticle.php
Main/
error404.php
index.php
layout.php
Saturday, October 2, 2010

97. return $this->render('MainBundle:Blog:showArticle.twig',
array('article' => $article));
MainBundle/Resources/
config/
views/
Blog/
showArticle.twig
Main/
error404.php
index.php
layout.php
Saturday, October 2, 2010

98. return $this->render('MainBundle:Blog:showArticle.twig',
array('article' => $article));
MainBundle/Resources/
config/
views/
Blog/
showArticle.twig
Main/
error404.php
index.php
layout.php
Saturday, October 2, 2010

99. Twig
The flexible, fast, and secure template language for PHP
http://twig-project.org
Saturday, October 2, 2010

100. symfony 1
Saturday, October 2, 2010

101. symfony 1
• templates
Saturday, October 2, 2010

102. symfony 1
• templates
• layouts
Saturday, October 2, 2010

103. symfony 1
• templates
• layouts
• slots
Saturday, October 2, 2010

104. symfony 1
• templates
• layouts
• slots
• components
Saturday, October 2, 2010

105. symfony 1
• templates
• layouts
• slots
• components
• partials
Saturday, October 2, 2010

106. symfony 1
• templates
• layouts
• slots
• components
• partials
• component slots
Saturday, October 2, 2010

107. fewer concepts, more power
Saturday, October 2, 2010

108. Symfony2
Saturday, October 2, 2010

109. Symfony2
• templates
Saturday, October 2, 2010

110. Symfony2
• templates
• slots
Saturday, October 2, 2010

111. Symfony2
•
•
templates
slots } fewer concepts, more power
Saturday, October 2, 2010

112. <?php $view->extend('MainBundle::layout.php') ?>
<?php foreach ($people as $person): ?>
<?php $view->render(
'MainBundle:Person:thumbnail',
array('person' => $person)
) ?>
<?php endforeach; ?>
Saturday, October 2, 2010

113. <?php $view->extend('MainBundle::layout.php') ?>
<?php foreach ($people as $person): ?>
decorate_with()
<?php $view->render(
'MainBundle:Person:thumbnail',
array('person' => $person)
) ?>
<?php endforeach; ?>
Saturday, October 2, 2010

114. <?php $view->extend('MainBundle::layout.php') ?>
<?php foreach ($people as $person): ?>
<?php $view->render(
'MainBundle:Person:thumbnail',
array('person' => $person)
) ?>
<?php endforeach; ?>
Saturday, October 2, 2010

115. <?php $view->extend('MainBundle::layout.php') ?>
<?php foreach ($people as $person): ?>
<?php $view->render(
'MainBundle:Person:thumbnail',
array('person' => $person)
) ?>
<?php endforeach; ?>
Saturday, October 2, 2010

116. <?php $view->extend('MainBundle::layout.php') ?>
<?php foreach ($people as $person): ?>
<?php $view->render(
'MainBundle:Person:thumbnail',
array('person' => $person)
) ?> include_partial()
<?php endforeach; ?>
Saturday, October 2, 2010

117. <?php $view->extend('MainBundle::layout.php') ?>
<?php foreach ($people as $person): ?>
<?php $view->render(
'MainBundle:Person:thumbnail',
array('person' => $person)
) ?>
<?php endforeach; ?>
Saturday, October 2, 2010

118. helpers
Saturday, October 2, 2010

119. <?php $view['slots']->set('title', 'Hi!') ?>
<?php $view['slots']->start('sidebar') ?>
My awesome sidebar!
<?php $view['slots']->stop() ?>
Saturday, October 2, 2010

120. <?php $view['slots']->set('title', 'Hi!') ?>
<?php $view['slots']->start('sidebar') ?>
My awesome sidebar!
<?php $view['slots']->stop() ?>
Saturday, October 2, 2010

121. helpers are objects
Saturday, October 2, 2010

122. $view['javascripts']->add('script.js');
echo $view['javascripts'];
echo $view['assets']->getUrl('logo.gif');
use_javascript()
echo $view['router']->generate(
'person_show',
array('username' => $username)
);
$view['actions']->output('MainBundle:Search:form');
Saturday, October 2, 2010

123. $view['javascripts']->add('script.js');
echo $view['javascripts'];
echo $view['assets']->getUrl('logo.gif');
include_javascripts()
echo $view['router']->generate(
'person_show',
array('username' => $username)
);
$view['actions']->output('MainBundle:Search:form');
Saturday, October 2, 2010

124. $view['javascripts']->add('script.js');
echo $view['javascripts'];
echo $view['assets']->getUrl('logo.gif');
echo $view['router']->generate(
'person_show',
public_path()
array('username' => $username)
);
$view['actions']->output('MainBundle:Search:form');
Saturday, October 2, 2010

125. $view['javascripts']->add('script.js');
echo $view['javascripts'];
echo $view['assets']->getUrl('logo.gif');
echo $view['router']->generate(
'person_show',
array('username' => $username)
);
url_for()
$view['actions']->output('MainBundle:Search:form');
Saturday, October 2, 2010

126. $view['javascripts']->add('script.js');
echo $view['javascripts'];
echo $view['assets']->getUrl('logo.gif');
echo $view['router']->generate(
include_component()
'person_show',
array('username' => $username)
);
$view['actions']->output('MainBundle:Search:form');
Saturday, October 2, 2010

127. dependency injection
Saturday, October 2, 2010

128. lazy objects
Saturday, October 2, 2010

129. “ if you want me to foo
you better give me the foo-er
Saturday, October 2, 2010
”

130. class User
{
protected $session;
public function __construct(Session $session)
{
$this->session = $session;
}
}
Saturday, October 2, 2010

131. class User
{
protected $session;
public function __construct()
{
$this->session = Session::factory();
}
}
Saturday, October 2, 2010

132. class User
{
protected $session;
public function __construct()
{
$this->session = Session::factory();
}
}
Saturday, October 2, 2010

133. $session = $this->getMock('Session')
->expects($this->any())
->method('get')
->with('foo')
->will($this->returnValue('bar'))
;
// inject the mock object!
$user = new User($session);
$this->assertEquals('bar',
$user->getSessionVar('foo'));
Saturday, October 2, 2010

134. dependency injection container
• a configuration layer
• creates a "container" that manages the
creation of objects
• “teach” the container
• using xml, yaml, php, ini
(or some combination)
Saturday, October 2, 2010

135. services:
session:
class: Session
user:
class: User
arguments:
- @session
Saturday, October 2, 2010

136. public function getUserService()
{
if (isset($this->shared['user']))
return $this->shared['user'];
$user = new User(
$this->getSessionService()
);
$this->shared['user'] = $user;
return $user;
}
Saturday, October 2, 2010

137. // get one service by name
$container->get('user');
Saturday, October 2, 2010

138. // find many services by "tag"
$c->findTaggedServiceIds('my_tag');
Saturday, October 2, 2010

139. services:
foo_helper:
class: Foo
tags:
-
name: my_tag
Saturday, October 2, 2010

140. container parameters
Saturday, October 2, 2010

141. parameters:
foo.class: Foo
services:
foo:
class: %foo.class%
Saturday, October 2, 2010

142. parameters:
foo.class: Foo
services:
foo:
class: %foo.class%
Saturday, October 2, 2010

143. parameters:
foo.class: Foo
services:
foo:
class: %foo.class%
Saturday, October 2, 2010

144. dependency injection extensions
semantic configuration
Saturday, October 2, 2010

145. doctrine.dbal:
dbname: xxx
user: xxx
password: xxx
doctrine.orm: ~
Saturday, October 2, 2010

146. awesome developer tools
Saturday, October 2, 2010

147. Web Debug Toolbar
Saturday, October 2, 2010

148. Web Debug Toolbar
Saturday, October 2, 2010

149. Web Debug Toolbar
Saturday, October 2, 2010

150. Web Profiler
Saturday, October 2, 2010

151. Web Profiler
Saturday, October 2, 2010

152. Web Profiler
Saturday, October 2, 2010

153. Web Profiler
Saturday, October 2, 2010

154. Web Profiler
Saturday, October 2, 2010

155. Questions?
Saturday, October 2, 2010

156. OpenSky is Hiring!
http://engineering.shopopensky.com
Please contact me if you're interested.
Saturday, October 2, 2010

157. OpenSky is Hiring!
http://engineering.shopopensky.com
Please contact me if you're interested.
Saturday, October 2, 2010

158. symfony-reloaded.org
Saturday, October 2, 2010