Symfony Custom Form Field Type Block not rendering

Question

Trying to build out a custom form field type in Symfony, but the widget block is not rendering. I set up a widget for a text field type in the same file, and that rendered properly. What would cause my widget to not find it's template block?

MediaGalleryType.php

class MediaGalleryType extends AbstractType
{
    public function getParent()
    {
        return TextType::class;
    }
}

mediagallery.html.twig

{% block mediagallery_widget %}
    HTML Goes here
{% endblock %}
{% block text_widget %}
    This replaces all text type fields
{% endblock %}

twig.yaml

twig:
    form_themes:
        - 'mediagallery.html.twig'

If you're not using autoconfigure, make sure to tag your service with form.type. — Themer
– Themer, Commented Oct 12, 2018 at 10:04

psion · Accepted Answer · 2018-10-11 19:15:19Z

1

After some more digging around in sourcecode for Symfony form types, I found a method I can extend that returns the block prefix.

public function getBlockPrefix()
{
    return 'mediagallery';
}

answered Oct 11, 2018 at 19:15

psion

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