added a new argument to MultilangTemplateField, to instruct it to add…

… a fake request to the template context

This is needed for rendering CMS placeholders

cms_search/search_helpers/fields.py

@@ -1,11 +1,20 @@
 from django.conf import settings
 from haystack import indexes
 from django.utils.translation import get_language, activate
+from django.template import loader, Context
+
+try:
+    from django.test.client import RequestFactory
+except ImportError:
+    from cms_search.utils import RequestFactory
+
+rf = RequestFactory()
 
 class MultiLangTemplateField(indexes.CharField):
 
-    def __init__(self, **kwargs):
+    def __init__(self, needs_request=False, **kwargs):
         kwargs['use_template'] = True
+        self.needs_request = needs_request
         super(MultiLangTemplateField, self).__init__(**kwargs)
 
     def prepare_template(self, obj):
@@ -14,9 +23,31 @@ def prepare_template(self, obj):
         try:
             for lang, lang_name in settings.LANGUAGES:
                 activate(lang)
-                content.append(super(MultiLangTemplateField, self).prepare_template(obj))
+                content.append(self._prepare_template(obj, needs_request=self.needs_request))
         finally:
             activate(current_lang)
-
         return '\n'.join(content)
-
+
+    def _prepare_template(self, obj, needs_request=False):
+        """
+        This is a copy of CharField.prepare_template, except that it adds a fake
+        request to the context, which is mainly needed to render CMS placeholders
+        """
+        if self.instance_name is None and self.template_name is None:
+            raise SearchFieldError("This field requires either its instance_name variable to be populated or an explicit template_name in order to load the correct template.")
+
+        if self.template_name is not None:
+            template_names = self.template_name
+
+            if not isinstance(template_names, (list, tuple)):
+                template_names = [template_names]
+        else:
+            template_names = ['search/indexes/%s/%s_%s.txt' % (obj._meta.app_label, obj._meta.module_name, self.instance_name)]
+
+        t = loader.select_template(template_names)
+        ctx = {'object': obj}
+        if needs_request:
+            request = rf.get("/")
+            request.session = {}
+            ctx['request'] = request
+        return t.render(Context(ctx))