Django: How to check if field widget is checkbox in the template?

Question

I\'ve created a custom template for rendering form fields:

    
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Answer 1

Use a custom template filter!

In yourapp/templatetags/my_custom_tags.py:

from django import template
from django.forms import CheckboxInput

register = template.Library()

@register.filter(name='is_checkbox')
def is_checkbox(field):
  return field.field.widget.__class__.__name__ == CheckboxInput().__class__.__name__

In your template:

{% load my_custom_tags %}
 
{% if field|is_checkbox %}
  do something
{% endif %}

Side note on implementation: when I don't instantiate a CheckboxInput, the class name is MediaDefiningClass.

>>> form django.forms import CheckboxInput
KeyboardInterrupt
>>> CheckboxInput.__class__.__name__
'MediaDefiningClass'