CODEWITHSUNDEEP
symfonytwig
dnagirl
dnagirl

Reputation: 20456

Where is code for `form_widget()` Twig function?

I went looking to see how Symfony's extended Twig function form_widget actually works. I was expecting to find the function in symfony / src / Symfony / Bridge / Twig / Extension / FormExtension.php . It's added to the function list there:

public function getFunctions()
{
    return array(

...
        new \Twig_SimpleFunction('form_widget', null, array('node_class' => 'Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode', 'is_safe' => array('html'))),

...
    );
}

But no callable is listed (ie the 2nd arg is null). So what code is called when I use form_widget(a_form_element) in a Twig template?

Upvotes: 4

Views: 1419

Answers (4)

Marek G.
Marek G.

Reputation: 109

This is now depreciated but here is available code directly using methods to render form when you call eg. form_row() twig function Here it is: https://github.com/symfony/symfony/blob/4.4/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/FormHelper.php

Upvotes: 0

cg.
cg.

Reputation: 3678

My answer is a little late but I just happened to investigate the same question. This is what I found:

The code which is called when you use form_widget() is that produced directly by the SearchAndRenderBlockNode class when your template is compiled. The compiled template code then results in a call to Symfony\Component\Form\FormRenderer::searchAndRenderBlock() where the proper Twig block is located, provided with context, and rendered.

Upvotes: 3

s7anley
s7anley

Reputation: 2498

You can find it in FrameworkBundle/Resources/views/Form/form_widget.html.php or it equivalent in template Symfony/Bridge/Twig/Resources/views/Form/form_div_layout.html.twig.

Upvotes: 1

Lighthart
Lighthart

Reputation: 3656

I don't recognize the name space there. Or that code.

Mine is in Symfony\Bridge\Twig\Extension\FormExtension.php

It uses Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode

Upvotes: 0

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