edumed/templatetags/inline_stylesheet.py

   1 # -*- coding: utf-8 -*-
   2 # https://github.com/jazzband/django-pipeline/issues/295#issuecomment-152095865
   3 # adjusted for older pipeline
   4 from __future__ import unicode_literals
   5 import codecs
   6
   7 from django.contrib.staticfiles.storage import staticfiles_storage
   8 from django.utils.safestring import mark_safe
   9 from django import template
  10 from pipeline.templatetags import compressed
  11
  12 register = template.Library()
  13
  14
  15 class StylesheetNode(compressed.CompressedCSSNode):
  16     def render_css(self, package, path):
  17         return self.render_individual_css(package, [path])
  18
  19     def render_individual_css(self, package, paths, **kwargs):
  20         html = []
  21         for path in paths:
  22             with codecs.open(staticfiles_storage.path(path), 'r', 'utf-8') as f:
  23                 html.append(f.read())
  24         html = '<style type="text/css">' + '\n'.join(html) + '</style>'
  25         return mark_safe(html)
  26
  27
  28 @register.tag
  29 def inline_stylesheet(parser, token):
  30     """ Template tag that mimics pipeline's stylesheet tag, but embeds
  31     the resulting CSS directly in the page.
  32     """
  33     try:
  34         tag_name, name = token.split_contents()
  35     except ValueError:
  36         raise template.TemplateSyntaxError(
  37             '%r requires exactly one argument: the name of a group in the PIPELINE_CSS setting'
  38             % token.split_contents()[0])
  39     return StylesheetNode(name)