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[FrameworkBundle] Added doc for ControllerTrait::isFormValid #8518

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[FrameworkBundle] Added doc for ControllerTrait::isFormValid #8518

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20 changes: 20 additions & 0 deletions best_practices/forms.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -197,6 +197,26 @@ Handling a form submit usually follows a similar template:
// render the template
}

.. versionadded:: 4.1
The ``ControllerTrait::isFormValid()`` method was added in Symfony 4.1.


It's also possible to use a short-cut if the ``ControllerTrait`` is imported:


.. code-block:: php

public function newAction(Request $request)
{
// build the form ...

if ($this->isFormValid($form)) {
// process the form data
}

// render the template
}

There are really only two notable things here. First, we recommend that you
use a single action for both rendering the form and handling the form submit.
For example, you *could* have a ``newAction()`` that *only* renders the form
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22 changes: 22 additions & 0 deletions forms.rst
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Expand Up @@ -259,6 +259,28 @@ your controller::
is called. Otherwise, changes done in the ``*_SUBMIT`` events aren't applied to the
view (like validation errors).


.. versionadded:: 4.1
The ``ControllerTrait::isFormValid()`` method was added in Symfony 4.1.


It's also possible to use a short-cut if the ``ControllerTrait`` is imported:


.. code-block:: php

public function newAction(Request $request)
{
// build the form ...

if ($this->isFormValid($form)) {
// process the form data
}

// render the template
}


This controller follows a common pattern for handling forms and has three
possible paths:

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