symfony - What is Form Context in Symfony2 -

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i getting started symfony2 , trying understand form component. looking @ page http://docs.symfony-reloaded.org/guides/forms/overview.html

and can understand how create form classes confusing how use forms in our controller. 

$form = contactform::create($this->get('form.context'));

does have more in depth explanation of form.context portion of code, , actual process behind using forms within controllers?

thanks.

form.context service symfony\component\form\formcontext object default. here's full definition of service:

    <service id="form.context" class="%form.context.class%">         <argument type="collection">             <argument key="validator" type="service" id="validator" />             <argument key="validation_groups">%form.validation_groups%</argument>             <argument key="field_factory" type="service" id="form.field_factory" />             <argument key="csrf_protection">%form.csrf_protection.enabled%</argument>             <argument key="csrf_field_name">%form.csrf_protection.field_name%</argument>             <argument key="csrf_provider" type="service" id="form.csrf_provider" />         </argument>     </service>

actually it's simple object prepare basic options used every form, ie. validator, csrf protection , field factory.

in fact code you've posted equivalent of:

$form = new \symfony\components\form\form(null, array(     'validator' => $this->get('validator'),     'validation_groups' => ...     ... ));

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