Django 3 Web Development Cookbook - Fourth Edition

How to do it...

In the utility_tags.py file, add the following content:

# myproject/apps/core/templatetags/utility_tags.pyimport refrom django import templatefrom django.utils.safestring import mark_saferegister = template.Library()""" FILTERS """MEDIA_CLOSED_TAGS = "|".join([    "figure", "object", "video", "audio", "iframe"])MEDIA_SINGLE_TAGS = "|".join(["img", "embed"])MEDIA_TAGS_REGEX = re.compile(    r"<(?P<tag>" + MEDIA_CLOSED_TAGS + ")[\S\s]+?</(?P=tag)>|" +    r"<(" + MEDIA_SINGLE_TAGS + ")[^>]+>",    re.MULTILINE)@register.filterdef first_media(content):    """    Returns the chunk of media-related markup from the html content    """    tag_match = MEDIA_TAGS_REGEX.search(content)    media_tag = ""    if tag_match:        media_tag = tag_match.group()    return mark_safe(media_tag) ...