django crispy forms with jinja2

Question

I want to use Jinja2 and Django crispy forms together, but when I load crispy_forms_tags in my template and trying to render form with this template tag, I get an error:

Encountered unknown tag 'crispy'. Jinja was looking for the following tags: 'endblock'. The innermost block that needs to be closed is 'block'.

My template code:

{% extends 'base.html' %}
{% load crispy_forms_tags %}
{% block content %}
    <div class="panel-heading"><h3>Registration</h3></div>
    {% crispy form %}
{% endblock %}

How can I use this apps together?

Answer 1

Better solution:

templatetags.py

from crispy_forms.utils import render_crispy_form
from django_jinja import library
from jinja2 import contextfunction


@contextfunction
@library.global_function
def crispy(context, form):
    return render_crispy_form(form, context=context)

In template:

{{ crispy(form) }}

Answer 2

I found an easy, but not completed way to "hack in".

1. use 'django-jinja' package to register new filters;

2. in the filter file, define a crispy filter, which looks like:

   from crispy_forms.templatetags.crispy_forms_filters import as_crispy_form
   def crispy(form):
       return as_crispy_form(form, 'Bootstrap3', form.helper.label_class, form.helper.field_class)
   

In the form Jinja template, I have to write more code than direct crispy tag in django template:

<form id='id_form' class="form-horizontal" method='post'>
    {% csrf_token %}
    {{form.media}}
    {{ form|crispy() }}
    <div>
        <input type="submit" name="submit" value="Submit" class="btn btn-primary" id="submit-id-submit">
    </div>
</form>

If anyone finds a more effective way to crispy forms, please let me know.