general: use render_cell templatetag in ajax call (#16301)

combo/public/views.py

@@ -28,7 +28,7 @@ from django.db import transaction
 from django.http import (Http404, HttpResponse, HttpResponseRedirect,
         HttpResponsePermanentRedirect)
 from django.shortcuts import render, resolve_url
-from django.template import RequestContext, loader
+from django.template import RequestContext, Template
 from django.utils import lorem_ipsum, timezone
 
 from django.utils.translation import ugettext as _
@@ -83,6 +83,7 @@ def ajax_page_cell(request, page_pk, cell_reference):
     context = RequestContext(request, {
         'page': page,
         'request': request,
+        'cell': cell,
         'synchronous': True,
         'site_base': request.build_absolute_uri('/')[:-1],
     })
@@ -96,13 +97,8 @@ def ajax_page_cell(request, page_pk, cell_reference):
             # Cell can pass data through its own __dict__
             cell.modify_global_context(context, request)
 
-    # FIXME: we bind to an existing template to have the list of
-    # context processors applied to the RequestContext; the
-    # CellBase.render() method should be extended to accept an additional
-    # request parameter, to match the new Template::render() signature.
-    template = loader.get_template('combo/page_template.html')
-    with context.bind_template(template.template):
-        return HttpResponse(cell.render(context), content_type='text/html')
+    template = Template('{% load combo %}{% render_cell cell %}')
+    return HttpResponse(template.render(context), content_type='text/html')
 
 
 def extend_with_parent_cells(cells):