philo/templatetags/include_string.py

   1 from django import template
   2 from django.conf import settings
   3
   4
   5 register = template.Library()
   6
   7
   8 class IncludeStringNode(template.Node):
   9         def __init__(self, string):
  10                 self.string = string
  11
  12         def render(self, context):
  13                 try:
  14                         t = template.Template(self.string.resolve(context))
  15                         return t.render(context)
  16                 except template.TemplateSyntaxError:
  17                         if settings.TEMPLATE_DEBUG:
  18                                 raise
  19                         return settings.TEMPLATE_STRING_IF_INVALID
  20                 except:
  21                         return settings.TEMPLATE_STRING_IF_INVALID
  22
  23
  24 @register.tag
  25 def include_string(parser, token):
  26         """
  27         Include a flat string by interpreting it as a template. The compiled template will be rendered with the current context.
  28
  29         Usage::
  30
  31                 {% include_string <template_code> %}
  32
  33         """
  34         bits = token.split_contents()
  35         if len(bits) != 2:
  36                 raise TemplateSyntaxError("%r tag takes one argument: the template string to be included" % bits[0])
  37         string = parser.compile_filter(bits[1])
  38         return IncludeStringNode(string)