portal/templatetags/portal_filters.py

   1 from django import template
   2 from django.template.loader_tags import do_include
   3 from myslice.settings import theme
   4
   5 register = template.Library()
   6
   7 class IncludeNode(template.Node):
   8
   9     def __init__(self, template_name):
  10         if theme :
  11             self.theme_template_name = "%s%s" % (theme, template_name)
  12         self.template_name = template_name
  13
  14     def render(self, context):
  15         try:
  16             # Loading the template and rendering it
  17             included_template = template.loader.get_template(self.theme_template_name).render(context)
  18         except template.TemplateDoesNotExist:
  19             # template theme does not exists, try the generic one
  20             try:
  21                 # Loading the template and rendering it
  22                 included_template = template.loader.get_template(self.template_name).render(context)
  23             except template.TemplateDoesNotExist:
  24                 included_template = ''
  25
  26         return included_template
  27
  28 @register.tag
  29 def widget(parser, token):
  30     """Usage: {% widget "widget.html" %}
  31
  32     This will fail silently if the template doesn't exist. If it does, it will
  33     be rendered with the current context."""
  34     try:
  35         tag_name, template_name = token.split_contents()
  36     except ValueError:
  37         raise template.TemplateSyntaxError, \
  38             "%r tag requires a single argument" % token.contents.split()[0]
  39
  40     return IncludeNode(template_name[1:-1])