Django Haystack Whoosh raising Attribute Error on contenttype object

Question

This is a bit strange as the error is not raising in Xapian.

I'm on django-haystack==1.2.7 and Whoosh==2.4.1. Its able to build indexes but when I run a search, its saying

AttributeError at /search
'NoneType' object has no attribute 'concrete_model'

The exact traceback is here

Traceback:
File "C:\Python27\lib\site-packages\django\core\handlers\base.py" in get_response
  111.                         response = callback(request, *callback_args, **callback_kwargs)
File "D:\Code\projects\MYPROJ\deploy\..\myapps\pages\views.py" in search
  46.     return SearchView().__call__(request)
File "C:\Python27\lib\site-packages\haystack\views.py" in __call__
  50.         return self.create_response()
File "C:\Python27\lib\site-packages\haystack\views.py" in create_response
  145.         return render_to_response(self.template, context, context_instance=self.context_class(self.request))
File "C:\Python27\lib\site-packages\django\shortcuts\__init__.py" in render_to_response
  20.     return HttpResponse(loader.render_to_string(*args, **kwargs), **httpresponse_kwargs)
File "C:\Python27\lib\site-packages\django\template\loader.py" in render_to_string
  176.         return t.render(context_instance)
File "C:\Python27\lib\site-packages\django\template\base.py" in render
  140.             return self._render(context)
File "C:\Python27\lib\site-packages\django\template\base.py" in _render
  134.         return self.nodelist.render(context)
File "C:\Python27\lib\site-packages\django\template\base.py" in render
  823.                 bit = self.render_node(node, context)
File "C:\Python27\lib\site-packages\django\template\debug.py" in render_node
  74.             return node.render(context)
File "C:\Python27\lib\site-packages\django\template\loader_tags.py" in render
  123.         return compiled_parent._render(context)
File "C:\Python27\lib\site-packages\django\template\base.py" in _render
  134.         return self.nodelist.render(context)
File "C:\Python27\lib\site-packages\django\template\base.py" in render
  823.                 bit = self.render_node(node, context)
File "C:\Python27\lib\site-packages\django\template\debug.py" in render_node
  74.             return node.render(context)
File "C:\Python27\lib\site-packages\django\template\loader_tags.py" in render
  123.         return compiled_parent._render(context)
File "C:\Python27\lib\site-packages\django\template\base.py" in _render
  134.         return self.nodelist.render(context)
File "C:\Python27\lib\site-packages\django\template\base.py" in render
  823.                 bit = self.render_node(node, context)
File "C:\Python27\lib\site-packages\django\template\debug.py" in render_node
  74.             return node.render(context)
File "C:\Python27\lib\site-packages\django\template\loader_tags.py" in render
  62.             result = block.nodelist.render(context)
File "C:\Python27\lib\site-packages\django\template\base.py" in render
  823.                 bit = self.render_node(node, context)
File "C:\Python27\lib\site-packages\django\template\debug.py" in render_node
  74.             return node.render(context)
File "C:\Python27\lib\site-packages\django\template\loader_tags.py" in render
  62.             result = block.nodelist.render(context)
File "C:\Python27\lib\site-packages\django\template\base.py" in render
  823.                 bit = self.render_node(node, context)
File "C:\Python27\lib\site-packages\django\template\debug.py" in render_node
  74.             return node.render(context)
File "C:\Python27\lib\site-packages\django\template\loader_tags.py" in render
  62.             result = block.nodelist.render(context)
File "C:\Python27\lib\site-packages\django\template\base.py" in render
  823.                 bit = self.render_node(node, context)
File "C:\Python27\lib\site-packages\django\template\debug.py" in render_node
  74.             return node.render(context)
File "C:\Python27\lib\site-packages\django\template\defaulttags.py" in render
  281.                 return nodelist.render(context)
File "C:\Python27\lib\site-packages\django\template\base.py" in render
  823.                 bit = self.render_node(node, context)
File "C:\Python27\lib\site-packages\django\template\debug.py" in render_node
  74.             return node.render(context)
File "C:\Python27\lib\site-packages\django\template\defaulttags.py" in render
  476.         output = self.nodelist.render(context)
File "C:\Python27\lib\site-packages\django\template\base.py" in render
  823.                 bit = self.render_node(node, context)
File "C:\Python27\lib\site-packages\django\template\debug.py" in render_node
  74.             return node.render(context)
File "C:\Python27\lib\site-packages\django\template\loader_tags.py" in render
  155.         return self.render_template(self.template, context)
File "C:\Python27\lib\site-packages\django\template\loader_tags.py" in render_template
  137.         output = template.render(context)
File "C:\Python27\lib\site-packages\django\template\base.py" in render
  140.             return self._render(context)
File "C:\Python27\lib\site-packages\django\template\base.py" in _render
  134.         return self.nodelist.render(context)
File "C:\Python27\lib\site-packages\django\template\base.py" in render
  823.                 bit = self.render_node(node, context)
File "C:\Python27\lib\site-packages\django\template\debug.py" in render_node
  74.             return node.render(context)
File "C:\Python27\lib\site-packages\django\template\defaulttags.py" in render
  185.                         nodelist.append(node.render(context))
File "C:\Python27\lib\site-packages\django\template\defaulttags.py" in render
  281.                 return nodelist.render(context)
File "C:\Python27\lib\site-packages\django\template\base.py" in render
  823.                 bit = self.render_node(node, context)
File "C:\Python27\lib\site-packages\django\template\debug.py" in render_node
  74.             return node.render(context)
File "C:\Python27\lib\site-packages\django\template\defaulttags.py" in render
  281.                 return nodelist.render(context)
File "C:\Python27\lib\site-packages\django\template\base.py" in render
  823.                 bit = self.render_node(node, context)
File "C:\Python27\lib\site-packages\django\template\debug.py" in render_node
  74.             return node.render(context)
File "C:\Python27\lib\site-packages\django\template\loader_tags.py" in render
  155.         return self.render_template(self.template, context)
File "C:\Python27\lib\site-packages\django\template\loader_tags.py" in render_template
  137.         output = template.render(context)
File "C:\Python27\lib\site-packages\django\template\base.py" in render
  140.             return self._render(context)
File "C:\Python27\lib\site-packages\django\template\base.py" in _render
  134.         return self.nodelist.render(context)
File "C:\Python27\lib\site-packages\django\template\base.py" in render
  823.                 bit = self.render_node(node, context)
File "C:\Python27\lib\site-packages\django\template\debug.py" in render_node
  74.             return node.render(context)
File "C:\Python27\lib\site-packages\django\template\defaulttags.py" in render
  281.                 return nodelist.render(context)
File "C:\Python27\lib\site-packages\django\template\base.py" in render
  823.                 bit = self.render_node(node, context)
File "C:\Python27\lib\site-packages\django\template\debug.py" in render_node
  74.             return node.render(context)
File "C:\Python27\lib\site-packages\django\contrib\comments\templatetags\comments.py" in render
  67.         qs = self.get_query_set(context)
File "C:\Python27\lib\site-packages\django\contrib\comments\templatetags\comments.py" in get_query_set
  72.         ctype, object_pk = self.get_target_ctype_pk(context)
File "C:\Python27\lib\site-packages\django\contrib\comments\templatetags\comments.py" in get_target_ctype_pk
  100.             return ContentType.objects.get_for_model(obj), obj.pk
File "C:\Python27\lib\site-packages\django\contrib\contenttypes\models.py" in get_for_model
  32.         opts = self._get_opts(model)
File "C:\Python27\lib\site-packages\django\contrib\contenttypes\models.py" in _get_opts
  20.         return model._meta.concrete_model._meta

Exception Type: AttributeError at /search
Exception Value: 'NoneType' object has no attribute 'concrete_model'

I have been using django.contrib.comments (since the django framework version is 1.4.2), the exception is raised at

{% get_comment_count for entry as comment_count %}

That's a bit strange as its not a part of search!

The search view endpoint returns

SearchView().__call__(request)

I'm unable to figure out at least what's wrong, whats going on. Anything new lead would be quite helpful

I've passed by this issue, if you try to serialize the search results you will get the same error. The reason is that the haystack search models don't have a concrete model, this is causing an exception. I already pointed this out in haystack github issue tracker. It should have been done exactly like Django does it but its not. I'll update you if I found a solution. — bhappy, May 29 '14 at 12:57

Django Haystack Whoosh raising Attribute Error on contenttype object

0 Answers0