Symfony2. Form and Validation

1. Symfony2
Form and Validation

2. Creating an Entity Class
// src/Volcano/VideostatusBundle/Entity/Clip.php
namespace VolcanoVideostatusBundleEntity;
class Clip
{
protected $id;
protected $url;
protected $timeStart;
protected $timeFinish;
}

3. Creating a Simple Form:
Controller
class DefaultController extends Controller
{
public function newAction(Request $request)
{
$clip = new Clip();
//...
$form = $this->createFormBuilder($clip)
->add('url', 'text')
->add('timeStart', 'integer')
->add('timeFinish', 'integer')
->add('save', 'submit')
->getForm();
return $this->render('VolcanoideasVideoBundle:Default:new.html.twig', array(
'form' => $form->createView(),
));
}
}

4. Creating a Simple Form:
Template
{% extends "AcmeDemoBundle::layout.html.twig" %}
{% block content %}
<h1 class="title">Form demo</h1>
{{ form(form) }}
{% endblock %}

5. Creating a Simple Form:
Template

6. Creating a Simple Form:
Controller
class DefaultController extends Controller
{
public function newAction(Request $request)
{
$clip = new Clip();
$form = $this->createFormBuilder($clip)
//...
->getForm();
$form->handleRequest($request);
if ($form->isValid()) {
// perform some action, such as saving the task to the database
return $this->redirect($this->generateUrl('clip_success'));
}
//
}
}

7. Validation
use SymfonyComponentValidatorConstraints as Assert;
class Clip
{
/**
* @AssertNotBlank(message="Enter URL")
* @AssertUrl(message="Enter valid URL", protocols={"http", "https"})
*/
protected $url;
/**
* @AssertNotBlank(message="Enter Start Time")
* @AssertType(type="integer")
*/
protected $timeStart;
}

8. Validation service
$clip = new Clip();
//...
$validator = $this->get('validator');
$errors = $validator->validate($clip);
if (count($errors) > 0) {
return new Response(print_r($errors, true));
} else {
return new Response('The clip is valid!');
}

9. Creating Form Classes
// src/Volcano/VideoBundle/Form/Type/ClipType.php
namespace VolcanoVideoBundleFormType;
use SymfonyComponentFormAbstractType;
use SymfonyComponentFormFormBuilderInterface;
class ClipType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder->add('url','text');
$builder->add('timeStart', 'integer');
//...
}
public function getName()
{
return 'task';
}
}

10. Creating a Simple Form:
Controller
class DefaultController extends Controller
{
public function newAction(Request $request)
{
$clip = new Clip();
$form = $this->createForm(new ClipType(), $clip);
$form->handleRequest($request);
if ($form->isValid()) {
// perform some action, such as saving the task to the database
return $this->redirect($this->generateUrl('clip_success'));
}
//
}
}

11. Creating Form Classes
// src/Volcano/VideoBundle/Form/Type/ClipType.php
public function setDefaultOptions(OptionsResolverInterface $resolver)
{
$resolver->setDefaults(array(
'data_class' => 'VolcanoVideoBundleEntityClip',
));
}

12. Creating a Simple Form:
Template
{% extends "AcmeDemoBundle::layout.html.twig" %}
{% block content %}
<h1 class="title">Form demo</h1>
{{ form(form) }}
{% endblock %}

13. Creating a Simple Form:
Template

14. Creating a Simple Form:
Template
<form method="post" action="">
<div id="form">
<div>
<label for="form_url" class="required">Url</label>
<input type="text" id="form_url" name="form[url]" required="required">
</div>
<div>...</div>
<div>
<button type="submit" id="form_save" name="form[save]">Save</button>
</div>
<input type="hidden" id="form__token" name="form[_token]" value="
f9fa3d38371a9344a906049a1ab0bdda5f5374a3">
</div>
</form>

15. Rendering a Form
{{ form_start(form) }}
{{ form_errors(form) }}
{{ form_row(form.url) }}
{{ form_row(form.timeStart) }}
{{ form_row(form.timeFinish) }}
{{ form_row(form.save) }}
{{ form_end(form) }}

16. Rendering a Form:
form_row
{{ form_label(form.url) }}
{{ form_errors(form.url) }}
{{ form_widget(form.url) }}

17. Rendering a Form:
form_label
{{ form_label(form.url, "Clip URL") }}
<label for="form_url" class="required">Clip URL</label>

18. Rendering a Form:
form_errors
{{ form_errors(form.url) }}
<ul><li>This value is not a valid URL.</li></ul>

19. Rendering a Form:
form_widget
{{ form_widget(form.url, {'attr': {'class': 'text-input'}}) }}
<input type="text" id="form_url" class="text-input" name="form[url]" required="required"
value="123123">

20. Form theming:
Inside a Separate Template
{# src/Volcano/VideoBundle/Resources/views/Form/fields.html.twig #}
{% block form_row %}
{% spaceless %}
<div class="form_row">
{{ form_label(form) }}
{{ form_errors(form) }}
{{ form_widget(form) }}
</div>
{% endspaceless %}
{% endblock form_row %}

21. Form theming:
Inside a Separate Template
{% form_theme form 'VolcanoVideoBundle:Form:fields.html.twig' %}
{% block content %}
{{ form(form) }}
{% endblock content %}

22. Form theming:
Inside the same Template
{% form_theme form _self %}
{% block content %}
{{ form(form) }}
{% endblock content %}
{% block form_row %}
{% spaceless %}
<div class="form_row">
{{ form_label(form) }}
{{ form_errors(form) }}
{{ form_widget(form) }}
</div>
{% endspaceless %}
{% endblock form_row %}

23. Form theming:
Global
# app/config/config.yml
twig:
form:
resources:
- 'VolcanoVideoBundle:Form:fields.html.twig'

24. Form theming:
Individual field
{% form_theme form _self %}
{% block _form_url_row %}
<div class="url">
{{ form_label(form) }}
{{ form_errors(form) }}
{{ form_widget(form) }}
</div>
{% endblock %}

25. Embedding a Collection of
Forms
// src/Volcano/VideoBundle/Form/Type/TagType.php
class TagType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder->add('name');
}
public function setDefaultOptions(OptionsResolverInterface $resolver)
{
$resolver->setDefaults(array(
'data_class' => 'VolcanoVideostatusBundleEntityTag',
));
}
public function getName()
{
return 'tag';
}
}

26. Embedding a Collection of
Forms
// src/Volcano/VideoBundle/Form/Type/ClipType.php
class ClipType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder->add('url','text');
$builder->add('timeStart', 'integer');
//...
$builder->add('tags', 'collection', array(
'type' => new TagType(),
'allow_add' => true,
'allow_delete' => true
)
);
}
}