text: from django import template
  from django.utils.safestring import mark_safe
  from django.core.exceptions import ObjectDoesNotExist
  import re
  
  register = template.Library()
  
  @register.filter
  def post_with_inline_images(post_instance):
      """
      Pass in a blog post instance (not just the body). This blog post must have a body and one or more associated images.
      """
      body = post_instance.body
  
      def insert_link(matchobj):
          """
          Replace a string of format <<<imgname$alt_text.css_class#some_id>>> with:
          <img src="/path/to/imgname" alt="alt_text" class="css_class" id="some_id" />
          """
          imgname = matchobj.group('imgname')
          try:
              imgurl = post_instance.blogimage_set.get(name__exact=imgname).image.url
          except ObjectDoesNotExist: # Print the harmless '<<<...>>>' pattern instead
              return matchobj.group(0)
  
          return '<img src="{0}" alt="{alt}" class="{class}" id="{id}" />'.format(
              imgurl, **matchobj.groupdict(''))
  
      return re.sub(
      r'''<<<(?P<imgname>[-\w]+)(\$(?P<alt>[-\w\s]+))?(\.(?P<class>[-\w\s]+))?(\#(?P<id>[-\w]+))?>>>''',
          insert_link, body, re.U)