Symfony2. Form and Validation

Symfony2

Form and Validation

Creating an Entity Class// src/Volcano/VideostatusBundle/Entity/Clip.php

namespace Volcano\VideostatusBundle\Entity;

class Clip

{

protected $id;

protected $url;

protected $timeStart;

protected $timeFinish;

}

Creating a Simple Form:Controllerclass 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(),

));

}

}

Creating a Simple Form:Template

{% extends "AcmeDemoBundle::layout.html.twig" %}

{% block content %}

<h1 class="title">Form demo</h1>

{{ form(form) }}

{% endblock %}

Creating a Simple Form:Template

Creating a Simple Form:Controllerclass 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'));

}

//

}

}

Validationuse Symfony\Component\Validator\Constraints as Assert;

class Clip

{

/**

* @Assert\NotBlank(message="Enter URL")

* @Assert\Url(message="Enter valid URL", protocols={"http", "https"})

*/

protected $url;

/**

* @Assert\NotBlank(message="Enter Start Time")

* @Assert\Type(type="integer")

*/

protected $timeStart;

}

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!');

}

Creating Form Classes// src/Volcano/VideoBundle/Form/Type/ClipType.php

namespace Volcano\VideoBundle\Form\Type;

use Symfony\Component\Form\AbstractType;

use Symfony\Component\Form\FormBuilderInterface;

class ClipType extends AbstractType

{

public function buildForm(FormBuilderInterface $builder, array $options)

{

$builder->add('url','text');

$builder->add('timeStart', 'integer');

//...

}

public function getName()

{

return 'task';

}

}

Creating a Simple Form:Controllerclass 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'));

}

//

}

}

Creating Form Classes

// src/Volcano/VideoBundle/Form/Type/ClipType.php

public function setDefaultOptions(OptionsResolverInterface $resolver)

{

$resolver->setDefaults(array(

'data_class' => 'Volcano\VideoBundle\Entity\Clip',

));

}

Creating a Simple Form:Template

{% extends "AcmeDemoBundle::layout.html.twig" %}

{% block content %}

<h1 class="title">Form demo</h1>

{{ form(form) }}

{% endblock %}

Creating a Simple Form:Template

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>

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) }}

Rendering a Form: form_row

{{ form_label(form.url) }}

{{ form_errors(form.url) }}

{{ form_widget(form.url) }}

Rendering a Form: form_label

{{ form_label(form.url, "Clip URL") }}

<label for="form_url" class="required">Clip URL</label>

Rendering a Form: form_errors

{{ form_errors(form.url) }}

<ul><li>This value is not a valid URL.</li></ul>

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">

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 %}

Form theming:Inside a Separate Template

{% form_theme form 'VolcanoVideoBundle:Form:fields.html.twig' %}

{% block content %}

{{ form(form) }}

{% endblock content %}

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 %}

Form theming:Global

# app/config/config.ymltwig: form: resources: - 'VolcanoVideoBundle:Form:fields.html.twig'

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 %}

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' => 'Volcano\VideostatusBundle\Entity\Tag', )); }

public function getName() { return 'tag'; }}

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

)

);

}

}