Wagtail template filter to resolve html

wagtail-html-support.py

"""
  When editing the content use the brackets:
  [[ <iframe>..</iframe> ]]

  And after, use it in templates like this:
  {{ page.body|resolve_html|richtext }}
"""

# templatetags/mytags.py
from django import template

register = template.Library()


@register.filter
def resolve_html(value):
    new = value.replace('<p>[[', '')
    new = new.replace(']]</p>', '')
    new = new.replace('&lt;', '<')
    new = new.replace('&gt;', '>')
    return new