forms.html.twig

    <h3>Creating simple forms</h3>

{% raw %}<pre><code>// src/Acme/TaskBundle/Controller/DefaultController.php
namespace Acme\TaskBundle\Controller;

use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Acme\TaskBundle\Entity\Task;
use Symfony\Component\HttpFoundation\Request;

class DefaultController extends Controller
{
    public function newAction(Request $request)
    {
    // create a task and give it some dummy data for this example
    $task = $this->createForm(new Task());
    $task-&gt;setTask('Write a blog post');
    $task-&gt;setDueDate(new \DateTime('tomorrow'));

    $form = $this-&gt;createFormBuilder($task)
        -&gt;add('task', 'text')
        -&gt;add('dueDate', 'date')
        -&gt;getForm();

    return $this-&gt;render('AcmeTaskBundle:Default:new.html.twig', array(
        'form' =&gt; $form-&gt;createView()
    ));

    }
}
</code></pre>{% endraw %}

    <h3>Creating form classes and embedding subform</h3>

{% raw %}<pre><code>// src/Acme/TaskBundle/Form/Type/TaskType.php
namespace Acme\TaskBundle\Form\Type;

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;

class TaskType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder-&gt;add('task');
        $builder-&gt;add('dueDate', null, array('widget' =&gt; 'single_text'));

        //Any extra field not mapped to the object must define property_path.
        $builder-&gt;add('agree','checkbox', array('property_path' =&gt; false));

        //Embedding one form, you need to create first the categoryType class as usual.
        $builder-&gt;add('category', new CategoryType());

        //Embedding a collection of TAGS forms. You already have a tagType form.
        $builder-&gt;add('tags', 'collection', array('type' =&gt; new TagType()));

    }

    public function getName()
    {
        return 'task'; //must be unique.
    }

    //Symfony can guess the type but it is a good practice to always set de data_class because embedding forms is necessary.
    public function setDefaultOptions(OptionsResolverInterface $resolver)
    {
        $resolver-&gt;setDefaults(array(
            'data_class' =&gt; 'Acme\TaskBundle\Entity\Task',
            'cascade_validation' =&gt; true, //needed to validate embeed forms.
            'validation_groups' =&gt; array('registration'), //use of validation groups.
            'csrf_protection' =&gt; true,
            'csrf_field_name' =&gt; '_token',
            // a unique key to help generate the secret token
            'intention' =&gt; 'task_item',
        ));
    }

}
</code></pre>{% endraw %}

    <p>Field Type Options</p>

{% raw %}<pre><code>-&gt;add('dueDate', 'date', array(
    'widget' =&gt; 'single_text',
    'label' =&gt; 'Due Date'
))
</code></pre>{% endraw %}

    <p>The field data can be accessed in a controller with:</p>

{% raw %}<pre><code>$form-&gt;get('dueDate')-&gt;getData();
</code></pre>{% endraw %}

    <p>If, for some reason, you don't have access to your original $task object, you can fetch it from the form:</p>

{% raw %}<pre><code>$task = $form-&gt;getData();
</code></pre>{% endraw %}

    <p>Using form classes in a controller:</p>

{% raw %}<pre><code>$form = $this-&gt;createForm(new TaskType(), new Task());

// process the form on POST
if ($request-&gt;isMethod('POST')) {

//you can access POST variables directly
$this-&gt;get('request')-&gt;request-&gt;get('name');

$form-&gt;bind($request);

if ($form-&gt;isValid()) {
    $em = $this-&gt;getDoctrine()-&gt;getManager();
    $em-&gt;persist($task);
    $em-&gt;flush();
}
}

return $this-&gt;render('AcmeTaskBundle:Task:new.html.twig', array(
    'form' =&gt; $form-&gt;createView()
));
</code></pre>{% endraw %}

    <h3>Groups based on Submitted Data</h3>

    <p>The ability to specify a callback or Closure in validation_groups is new to version 2.1</p>

{% raw %}<pre><code>public function setDefaultOptions(OptionsResolverInterface $resolver)
{
    $resolver-&gt;setDefaults(array(
        'validation_groups' =&gt; array('Acme\\AcmeBundle\\Entity\\Client', 'determineValidationGroups'),
    ));
}
</code></pre>{% endraw %}

    <p>This will call the static method determineValidationGroups() on the Client class after the form is bound, but before validation is executed.
        The Form object is passed as an argument to that method (see next example). You can also define whole logic inline by using a Closure:</p>

    <p>You can use inline post validation also:</p>

{% raw %}<pre><code>public function setDefaultOptions(OptionsResolverInterface $resolver)
{
    $resolver-&gt;setDefaults(array(
        'validation_groups' =&gt; function(FormInterface $form) {
            $data = $form-&gt;getData();
            if (Entity\Client::TYPE_PERSON == $data-&gt;getType()) {
                return array('person');
            } else {
                return array('company');
            }
        },
    ));
}
</code></pre>{% endraw %}

    <h3>Rendering forms in TWIG</h3>

    <p>First of all check all Form Type References</p>

    <p>
        <a href="http://symfony.com/doc/current/reference/forms/types.html">http://symfony.com/doc/current/reference/forms/types.html</a>
    </p>

    <div class="row">

        <div class="span6">
    <p><strong>Text field</strong></p>

    <table>
        <tr>
            <th>Widget</th>
            <th>Widget</th>
        </tr>
        <tr>
            <td>text</td>
            <td>textarea</td>
        </tr>
        <tr>
            <td>textarea</td>
            <td>integer</td>
        </tr>
        <tr>
            <td>email</td>
            <td>money</td>
        </tr>
        <tr>
            <td>number</td>
            <td>password</td>
        </tr>
        <tr>
            <td>percent</td>
            <td>search</td>
        </tr>
    </table>

            <p><strong>Choice fields</strong></p>

    <table>
        <tr>
            <th>Widget</th>
            <th>Widget</th>
        </tr>
        <tr>
            <td><a href="http://symfony.com/doc/current/reference/forms/types/choice.html">choice</a></td>
            <td><a href="http://symfony.com/doc/current/reference/forms/types/entity.html">entity</a></td>
        </tr>
        <tr>
            <td><a href="http://symfony.com/doc/current/reference/forms/types/country.html">country</a></td>
            <td><a href="http://symfony.com/doc/current/reference/forms/types/language.html">language</a></td>
        </tr>
        <tr>
            <td><a href="http://symfony.com/doc/current/reference/forms/types/locale.html">locale</a></td>
            <td><a href="http://symfony.com/doc/current/reference/forms/types/timezone.html">timezone</a></td>
        </tr>
    </table>

        </div>

        <div class="span6">

    <p><strong>Date and datetime fields</strong></p>

    <table>
        <tr>
            <th>Widget</th>
            <th>Widget</th>
        </tr>
        <tr>
            <td><a href="http://symfony.com/doc/current/reference/forms/types/date.html">date</a></td>
            <td><a href="http://symfony.com/doc/current/reference/forms/types/datetime.html">datetime</a></td>
        </tr>
        <tr>
            <td><a href="http://symfony.com/doc/current/reference/forms/types/time.html">time</a></td>
            <td><a href="http://symfony.com/doc/current/reference/forms/types/birthday.html">birthday</a></td>
        </tr>
    </table>



    <p><strong>Other fields</strong></p>

    <table>
        <tr>
            <th>Widget</th>
            <th>Widget</th>
        </tr>
        <tr>
            <td><a href="http://symfony.com/doc/current/reference/forms/types/checkbox.html">checkbox</a></td>
            <td><a href="http://symfony.com/doc/current/reference/forms/types/file.html">file</a></td>
        </tr>
        <tr>
            <td><a href="http://symfony.com/doc/current/reference/forms/types/radio.html">radio</a></td>
            <td></td>
        </tr>
    </table>
    <p><strong>Field groups</strong></p>

    <table>
        <tr>
            <th>Widget</th>
            <th>Widget</th>
        </tr>
        <tr>
            <td><a href="http://symfony.com/doc/current/reference/forms/types/collection.html">collection</a></td>
            <td><a href="http://symfony.com/doc/current/reference/forms/types/repeated.html">repeated</a></td>
        </tr>
    </table>
    <p><strong>Hidden fields</strong></p>

    <table>
        <tr>
            <th>Widget</th>
            <th>Widget</th>
        </tr>
        <tr>
            <td><a href="http://symfony.com/doc/current/reference/forms/types/hidden.html">hidden</a></td>
            <td><a href="http://symfony.com/doc/current/reference/forms/types/csrf.html">csrf</a></td>
        </tr>
    </table>
    </div>
        </div>



    <h4>Simple and fast</h4>

{% raw %}<pre><code>{{ form_start(form) }}
{{ form_widget(form) }}
{{ form_end(form) }}
</code></pre>{% endraw %}

    <h4>Rows</h4>

{% raw %}<pre><code>&lt;form action="{{ path('task_new') }}" method="post" {{ form_enctype(form) }}&gt;
{{ form_errors(form) }}

{{ form_row(form.task) }}
{{ form_row(form.dueDate) }}

{{ form_rest(form) }}

&lt;input type="submit" /&gt;
&lt;/form&gt;
</code></pre>{% endraw %}

    <h4>Manual</h4>

{% raw %}
<pre><code>&lt;form action="{{ path('task_new') }}" method="post" {{ form_enctype(form) }}&gt;
{{ form_errors(form) }}
&lt;div&gt;
    {{ form_label(form.task,'custom label') }}
    {{ form_errors(form.task) }}
    {{ form_widget(form.task, { 'attr': {'class': 'span3'} })) }}
&lt;/div&gt;
&lt;div&gt;
    {{ form_label(form.dueDate) }}
    {{ form_errors(form.dueDate) }}
    {{ form_widget(form.dueDate) }}
&lt;/div&gt;

{# Render one embedded form #}
&lt;h3&gt;Category&lt;/h3&gt;
&lt;div class="category"&gt;
    {{ form_row(form.category.name) }}
&lt;/div&gt;

{# Render multiple embedded forms #}
&lt;h3&gt;Tags&lt;/h3&gt;
&lt;ul class="tags"&gt;
    {% for tag in form.tags %}
    &lt;li&gt;{{ form_row(tag.name) }}&lt;/li&gt;
    {% endfor %}
&lt;/ul&gt;

{{ form_rest(form) }}

&lt;/form&gt;
</code></pre>{% endraw %}

    <h4>Access "name" and "id" attributes</h4>

{% raw %}<pre><code>{{ form.task.vars.id }}
{{ form.task.vars.full_name }}
</code></pre>{% endraw %}

    <p>You can access current data of your form via:</p>

{% raw %}<pre><code>{{ form.vars.value.task }}
</code></pre>{% endraw %}

    <h3>Form Theming</h3>

    <p>In Twig, each form "fragment" is represented by a Twig block. To customize any part of how a form renders, you just need to override the appropriate block.</p>

    <p>To understand how this works, let's customize the form_row fragment and add a class attribute to the div element that surrounds each row. To do this, create a new template file that will store the new markup:</p>

{% raw %}<pre><code>{# src/Acme/TaskBundle/Resources/views/Form/fields.html.twig #}
{% block form_row %}
    {% spaceless %}
    &lt;div class="form_row"&gt;
        {{ form_label(form) }}
        {{ form_errors(form) }}
        {{ form_widget(form) }}
    &lt;/div&gt;
    {% endspaceless %}
{% endblock form_row %}
</code></pre>{% endraw %}

    <p>To tell the form component to use your new form_row fragment defined above, add the following to the top of the template that renders the form:</p>

{% raw %}<pre><code>{# src/Acme/TaskBundle/Resources/views/Default/new.html.twig #}
{% form_theme form 'AcmeTaskBundle:Form:fields.html.twig' %}
{% form_theme form 'AcmeTaskBundle:Form:fields.html.twig' 'AcmeTaskBundle:Form:fields2.html.twig' %}
&lt;form ...&gt;
</code></pre>{% endraw %}

    <p>New in version 2.1: An alternate Twig syntax for form_theme has been introduced in 2.1. It accepts any valid Twig expression (the most noticeable difference is using an array when using multiple themes).</p>

{% raw %}
<pre><code>{# src/Acme/TaskBundle/Resources/views/Default/new.html.twig #}
{% form_theme form with 'AcmeTaskBundle:Form:fields.html.twig' %}
{% form_theme form with ['AcmeTaskBundle:Form:fields.html.twig', 'AcmeTaskBundle:Form:fields2.html.twig'] %}
</code></pre>{% endraw %}

    <p>You can see all form fragments from twig followin this link:
        <a href="https://github.com/symfony/symfony/tree/master/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form">https://github.com/symfony/symfony/tree/master/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form</a>
    </p>

    <p>If your form customizations live inside an external template, you can reference the base block by using the parent() Twig function:</p>

{% raw %}<pre><code>{# src/Acme/DemoBundle/Resources/views/Form/fields.html.twig #}
{% extends 'form_div_layout.html.twig' %}

{% block integer_widget %}
&lt;div class="integer_widget"&gt;
    {{ parent() }}
&lt;/div&gt;
{% endblock %}
</code></pre>{% endraw %}

    <p>If you'd like a certain form customization to be global to your application, you can accomplish this by making the form customizations in an external template and then importing it inside your application configuration:</p>

{% raw %}<pre><code># app/config/config.yml
    twig:
        form:
            resources:
                - 'AcmeDemoBundle:Form:fields.html.twig'
</code></pre>{% endraw %}

    <p>See more in:
        <a href="http://symfony.com/doc/current/cookbook/form/form_customization.html">http://symfony.com/doc/current/cookbook/form/form_customization.html</a>
    </p>