Django

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Ticket #8571 (closed: worksforme)

Opened 2 years ago

Last modified 8 months ago

comment framework throws obscure exception in {% comment_form_target %}

Reported by: slavus@gmail.com Assigned to: nobody
Milestone: Component: django.contrib.comments
Version: 1.0 Keywords: comment, comment_form_target
Cc: django@darkpixel.com Triage Stage: Unreviewed
Has patch: 0 Needs documentation: 0
Needs tests: 0 Patch needs improvement: 0

Description

Today I updated Django to trunk version 8580, and I saw new comments framework. I updated my app acording to docs, made sql data migration but it looks like new comments are not working. I am getting: Caught an exception while rendering: Reverse for '<function post_comment at 0x01894770>' not found.

when I try to call render_comment_form ,or get_comment_form, and all becasue of

{% comment_form_target %}, this seams to be the problem.

It is some kind of strange bug, Has someone some kind of clue what I can do to fix this. Thanx,

Below is original trace:

Original Traceback (most recent call last):

File "D:\dev\django-svn\django\template\debug.py", line 71, in

render_node

result = node.render(context)

File "D:\dev\django-svn\django\template\init.py", line 876, in

render

return func(*resolved_vars)

File "D:\dev\django-svn\django\contrib\comments\templatetags

\comments.py", line 245, in comment_form_target

return comments.get_form_target()

File "D:\dev\django-svn\django\contrib\comments\init.py", line

43, in get_form_target

return

urlresolvers.reverse("django.contrib.comments.views.comments.post_comment")

File "D:\dev\django-svn\django\core\urlresolvers.py", line 307, in

reverse

*args, **kwargs)))

File "D:\dev\django-svn\django\core\urlresolvers.py", line 291, in

reverse

raise NoReverseMatch?("Reverse for '%s' not found." % lookup_view)

NoReverseMatch?: Reverse for '<function post_comment at 0x01894770>' not found.Request Method: GET Request URL: http://localhost/article/novi/ Exception Type: TemplateSyntaxError? Exception Value: Caught an exception while rendering: Reverse for '<function post_comment at 0x01894770>' not found.

Original Traceback (most recent call last):

File "D:\dev\django-svn\django\template\debug.py", line 71, in

render_node

result = node.render(context)

File "D:\dev\django-svn\django\template\init.py", line 876, in

render

return func(*resolved_vars)

File "D:\dev\django-svn\django\contrib\comments\templatetags

\comments.py", line 245, in comment_form_target

return comments.get_form_target()

File "D:\dev\django-svn\django\contrib\comments\init.py", line

43, in get_form_target

return

urlresolvers.reverse("django.contrib.comments.views.comments.post_comment")

File "D:\dev\django-svn\django\core\urlresolvers.py", line 307, in

reverse

*args, **kwargs)))

File "D:\dev\django-svn\django\core\urlresolvers.py", line 291, in

reverse

raise NoReverseMatch?("Reverse for '%s' not found." % lookup_view)

NoReverseMatch?: Reverse for '<function post_comment at 0x01894770>' not found.

Attachments

Change History

08/26/08 16:07:17 changed by jacob

  • status changed from new to closed.
  • needs_better_patch changed.
  • resolution set to worksforme.
  • needs_tests changed.
  • needs_docs changed.

You'll get this if you still have stale pyc files left over from the old comment system. Delete 'em and your code will work.

08/26/08 21:42:14 changed by darkpixel

  • cc set to django@darkpixel.com.
  • status changed from closed to reopened.
  • resolution deleted.

I am getting the same error. I stopped the development server, removed all the pyc files from my project, and from the python site-packages directory and still run into it. I deleted my site-packaged/django directory and reinstalled, same error. I fired up my clean virtual machine with Ubuntu Hardy, installed django from svn head, and checked out my project. Same error.

Environment:

Request Method: GET Request URL: http://localhost:8000/oi/ticket/1/ Django Version: 1.0-beta_1-SVN-unknown Python Version: 2.5.2 Installed Applications: ['django.contrib.auth',

'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.sites', 'django.contrib.admin', 'django.contrib.databrowse', 'openiron.oi', 'django.contrib.comments']

Installed Middleware: ('django.middleware.common.CommonMiddleware?',

'django.contrib.sessions.middleware.SessionMiddleware?', 'django.contrib.auth.middleware.AuthenticationMiddleware?', 'django.middleware.doc.XViewMiddleware')

Template error: In template /home/aaron/code/openiron/templates/ticket/ticket_detail.html, error at line 46

Caught an exception while rendering: Reverse for '<function post_comment at 0x88eba3c>' not found. 36 : {% get_comment_list for ticket as comment_list %}

37 : {% for comment in comment_list %}

38 : <TR class="{% cycle row1,row2 as rowclass %}">

39 : <TD{{ comment }}</TD>

40 : </TR>

41 : {% endfor %}

42 : </TABLE>

43 : {% endif %}

44 :

45 : {% get_comment_form for ticket as commentform %}

46 : <form action=" {% comment_form_target %} " method="POST">

47 : {{ commentform }}

48 : <p class="submit">

49 : <input type="submit" name="submit" class="submit-post" value="Preview">

50 : </p>

51 : </form>

52 :

53 :

54 :

55 : <FORM ACTION="." METHOD="POST">

56 : <TABLE>

Traceback: File "/usr/lib/python2.5/site-packages/django/core/handlers/base.py" in get_response

  1. response = callback(request, *callback_args, **callback_kwargs)

File "/usr/lib/python2.5/site-packages/django/contrib/auth/decorators.py" in call

  1. return self.view_func(request, *args, **kwargs)

File "/home/aaron/code/openiron/oi/views.py" in ticket_detail

  1. }, context_instance=RequestContext?(request))

File "/usr/lib/python2.5/site-packages/django/shortcuts/init.py" in render_to_response

  1. return HttpResponse(loader.render_to_string(*args, **kwargs), **httpresponse_kwargs)

File "/usr/lib/python2.5/site-packages/django/template/loader.py" in render_to_string

  1. return t.render(context_instance)

File "/usr/lib/python2.5/site-packages/django/template/init.py" in render

  1. return self.nodelist.render(context)

File "/usr/lib/python2.5/site-packages/django/template/init.py" in render

  1. bits.append(self.render_node(node, context))

File "/usr/lib/python2.5/site-packages/django/template/debug.py" in render_node

  1. result = node.render(context)

File "/usr/lib/python2.5/site-packages/django/template/loader_tags.py" in render

  1. return compiled_parent.render(context)

File "/usr/lib/python2.5/site-packages/django/template/init.py" in render

  1. return self.nodelist.render(context)

File "/usr/lib/python2.5/site-packages/django/template/init.py" in render

  1. bits.append(self.render_node(node, context))

File "/usr/lib/python2.5/site-packages/django/template/debug.py" in render_node

  1. result = node.render(context)

File "/usr/lib/python2.5/site-packages/django/template/loader_tags.py" in render

  1. result = self.nodelist.render(context)

File "/usr/lib/python2.5/site-packages/django/template/init.py" in render

  1. bits.append(self.render_node(node, context))

File "/usr/lib/python2.5/site-packages/django/template/debug.py" in render_node

  1. raise wrapped

Exception Type: TemplateSyntaxError? at /oi/ticket/1/ Exception Value: Caught an exception while rendering: Reverse for '<function post_comment at 0x88eba3c>' not found.

Original Traceback (most recent call last):

File "/usr/lib/python2.5/site-packages/django/template/debug.py", line 71, in render_node

result = node.render(context)

File "/usr/lib/python2.5/site-packages/django/template/init.py", line 876, in render

return func(*resolved_vars)

File "/usr/lib/python2.5/site-packages/django/contrib/comments/templatetags/comments.py", line 245, in comment_form_target

return comments.get_form_target()

File "/usr/lib/python2.5/site-packages/django/contrib/comments/init.py", line 50, in get_form_target

return urlresolvers.reverse("django.contrib.comments.views.comments.post_comment")

File "/usr/lib/python2.5/site-packages/django/core/urlresolvers.py", line 307, in reverse

*args, **kwargs)))

File "/usr/lib/python2.5/site-packages/django/core/urlresolvers.py", line 291, in reverse

raise NoReverseMatch?("Reverse for '%s' not found." % lookup_view)

NoReverseMatch?: Reverse for '<function post_comment at 0x88eba3c>' not found.

08/26/08 23:12:42 changed by thejaswi_puthraya

Well, even I can't reproduce the error. Check out http://dpaste.com/74114/ for clarifications. Looks like you are using comments wrong or have misinterpreted the docs. I am leaving the ticket open with the hope that the reporter will close it after he has got the clarifications.

08/26/08 23:43:45 changed by darkpixel

From your dpaste, I run lines 1 through 4 and end up with different results. Since it was complaining about being unable to resolve the URL, I double-checked my urls.py file and found nothing out of order. All my calls to reverse work correctly--just not for comments. I do have django.contrib.comments in INSTALLED_APPS.

08/27/08 01:50:56 changed by slavus@gmail.com

  • status changed from reopened to closed.
  • resolution set to worksforme.

Thanx, I have deleted old *.pyc files, and now it is working. I would never thinhk that old pyc would make such problems.

08/29/08 05:44:57 changed by Ole Morten Halvorsen

I experienced the same issue, however once I cleared *.pyc files in Django it went away.

08/31/08 05:22:52 changed by Alon Levy <alonlevy1@gmail.com>

Hi, Just my twocents: I had the same problem, removing pyc didn't help (but it is always a good idea:), anyway, the problem was that my old urls.py read:

(r'comments/', include('django.contrib.comments.urls.comments')),

After some head scratching and looking for the non-existent help on contrib/comments (README file, anything), I did the following change and it seems to work (i.e. I'm on to the next problem from the 1.0 upgrade ;):

(r'comments/', include('django.contrib.comments.urls')),

HTH,

Alon

09/02/08 16:56:57 changed by kire

  • status changed from closed to reopened.
  • resolution deleted.

Also got this error. Template code: {% load comments %}

{% block content %}

<h1>{{ object.title }}</h1>

<a href="{{ object.image.url }}"><img src="{{ object.get_display_url }}" alt="{{ object.title }}"/></a>

{% if object.caption %}<p>{{ object.caption }}</p>{% endif %}

{% get_comment_list for photologue.photo object.id as comment_list %} {% for comment in comment_list %}

<div class="comment_{% cycle odd,even %}" id="c{{ comment.id }}">

<span class="comnum"><a id="c{{ comment.id }}" href="#c{{ comment.id }}">#{{ forloop.counter }}</a></span> <p><b>{{ comment.person_name|escape }}</b> commented, on {{ comment.submit_date|date:"F j, Y" }} at {{ comment.submit_date|date:"P" }}:</p> {{ comment.comment|escape|urlizetrunc:40|linebreaks }}

</div>

{% endfor %}

{% render_comment_form for object %}

{% endblock %}

urls.py: (r'comments/', include('django.contrib.comments.urls')),

09/02/08 17:11:31 changed by jacob

  • status changed from reopened to closed.
  • resolution set to worksforme.

This is almost certainly either stale .pyc files in your tree, or an old version of Django on your path. If you can verify that that's not happening, reopen this ticket with the complete error.

Please, though, in the future use the "switch to copy and paste view" button to get a readable version of your error, and paste the contents of that error between {{{ and }}} (three braces) so that Trac knows to format it as code. Otherwise we can't read your errors!

09/08/08 20:55:39 changed by psychcf

  • status changed from closed to reopened.
  • version changed from SVN to 1.0.
  • resolution deleted.
  • milestone changed from 1.0 to post-1.0.

Ok, I've been having this problem in 1.0. I was hoping it would be fixed during the betas, but I guess it never did.

Here's my error log: 

Environment:

Request Method: GET
Request URL: http://localhost:8080/blog/2008/sep/08/test-entry/
Django Version: 1.0-final-SVN-unknown
Python Version: 2.5.2
Installed Applications:
['django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.comments',
 'django.contrib.flatpages',
 'django.contrib.sessions',
 'django.contrib.sites',
 'django.contrib.markup',
 'django.contrib.admin',
 'desktopsite.apps.snapboard',
 'desktopsite.apps.comment_utils',
 'desktopsite.apps.blog',
 'desktopsite.apps.content',
 'desktopsite.apps.repository',
 'dojango']
Installed Middleware:
('django.middleware.common.CommonMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.middleware.doc.XViewMiddleware',
 'desktopsite.apps.snapboard.middleware.threadlocals.ThreadLocals',
 'desktopsite.apps.repository.middleware.threadlocals.ThreadLocals')


Template error:
In template /usr/lib/python2.5/site-packages/django/contrib/comments/templates/comments/form.html, error at line 2
   Caught an exception while rendering: Reverse for '<function post_comment at 0x12f1c08>' with arguments '()' and keyword arguments '{}' not found.
   1 : {% load comments %}


   2 : <form action=" {% comment_form_target %} " method="POST">


   3 :   {% for field in form %}


   4 :     {% if field.is_hidden %}


   5 :       {{ field }}


   6 :     {% else %}


   7 :       <p


   8 :         {% if field.errors %} class="error"{% endif %}


   9 :         {% ifequal field.name "honeypot" %} style="display:none;"{% endifequal %}>


   10 :         {% if field.errors %}{{ field.errors }}{% endif %}


   11 :         {{ field.label_tag }} {{ field }}


   12 :       </p>


Traceback:
File "/usr/lib/python2.5/site-packages/django/core/handlers/base.py" in get_response
  86.                 response = callback(request, *callback_args, **callback_kwargs)
File "/usr/lib/python2.5/site-packages/django/views/generic/date_based.py" in object_detail
  350.     response = HttpResponse(t.render(c), mimetype=mimetype)
File "/usr/lib/python2.5/site-packages/django/template/__init__.py" in render
  176.         return self.nodelist.render(context)
File "/usr/lib/python2.5/site-packages/django/template/__init__.py" in render
  768.                 bits.append(self.render_node(node, context))
File "/usr/lib/python2.5/site-packages/django/template/debug.py" in render_node
  71.             result = node.render(context)
File "/usr/lib/python2.5/site-packages/django/template/loader_tags.py" in render
  97.         return compiled_parent.render(context)
File "/usr/lib/python2.5/site-packages/django/template/__init__.py" in render
  176.         return self.nodelist.render(context)
File "/usr/lib/python2.5/site-packages/django/template/__init__.py" in render
  768.                 bits.append(self.render_node(node, context))
File "/usr/lib/python2.5/site-packages/django/template/debug.py" in render_node
  71.             result = node.render(context)
File "/usr/lib/python2.5/site-packages/django/template/loader_tags.py" in render
  97.         return compiled_parent.render(context)
File "/usr/lib/python2.5/site-packages/django/template/__init__.py" in render
  176.         return self.nodelist.render(context)
File "/usr/lib/python2.5/site-packages/django/template/__init__.py" in render
  768.                 bits.append(self.render_node(node, context))
File "/usr/lib/python2.5/site-packages/django/template/debug.py" in render_node
  71.             result = node.render(context)
File "/usr/lib/python2.5/site-packages/django/template/loader_tags.py" in render
  97.         return compiled_parent.render(context)
File "/usr/lib/python2.5/site-packages/django/template/__init__.py" in render
  176.         return self.nodelist.render(context)
File "/usr/lib/python2.5/site-packages/django/template/__init__.py" in render
  768.                 bits.append(self.render_node(node, context))
File "/usr/lib/python2.5/site-packages/django/template/debug.py" in render_node
  71.             result = node.render(context)
File "/usr/lib/python2.5/site-packages/django/template/loader_tags.py" in render
  24.         result = self.nodelist.render(context)
File "/usr/lib/python2.5/site-packages/django/template/__init__.py" in render
  768.                 bits.append(self.render_node(node, context))
File "/usr/lib/python2.5/site-packages/django/template/debug.py" in render_node
  71.             result = node.render(context)
File "/usr/lib/python2.5/site-packages/django/template/loader_tags.py" in render
  24.         result = self.nodelist.render(context)
File "/usr/lib/python2.5/site-packages/django/template/__init__.py" in render
  768.                 bits.append(self.render_node(node, context))
File "/usr/lib/python2.5/site-packages/django/template/debug.py" in render_node
  71.             result = node.render(context)
File "/usr/lib/python2.5/site-packages/django/template/loader_tags.py" in render
  24.         result = self.nodelist.render(context)
File "/usr/lib/python2.5/site-packages/django/template/__init__.py" in render
  768.                 bits.append(self.render_node(node, context))
File "/usr/lib/python2.5/site-packages/django/template/debug.py" in render_node
  71.             result = node.render(context)
File "/usr/lib/python2.5/site-packages/django/template/loader_tags.py" in render
  24.         result = self.nodelist.render(context)
File "/usr/lib/python2.5/site-packages/django/template/__init__.py" in render
  768.                 bits.append(self.render_node(node, context))
File "/usr/lib/python2.5/site-packages/django/template/debug.py" in render_node
  71.             result = node.render(context)
File "/usr/lib/python2.5/site-packages/django/template/defaulttags.py" in render
  245.                     return self.nodelist_true.render(context)
File "/usr/lib/python2.5/site-packages/django/template/__init__.py" in render
  768.                 bits.append(self.render_node(node, context))
File "/usr/lib/python2.5/site-packages/django/template/debug.py" in render_node
  71.             result = node.render(context)
File "/usr/lib/python2.5/site-packages/django/contrib/comments/templatetags/comments.py" in render
  159.             formstr = render_to_string(template_search_list, {"form" : self.get_form(context)}, context)
File "/usr/lib/python2.5/site-packages/django/template/loader.py" in render_to_string
  107.     return t.render(context_instance)
File "/usr/lib/python2.5/site-packages/django/template/__init__.py" in render
  176.         return self.nodelist.render(context)
File "/usr/lib/python2.5/site-packages/django/template/__init__.py" in render
  768.                 bits.append(self.render_node(node, context))
File "/usr/lib/python2.5/site-packages/django/template/debug.py" in render_node
  81.             raise wrapped

Exception Type: TemplateSyntaxError at /blog/2008/sep/08/test-entry/
Exception Value: Caught an exception while rendering: Reverse for '<function post_comment at 0x12f1c08>' with arguments '()' and keyword arguments '{}' not found.

Original Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/django/template/debug.py", line 71, in render_node
    result = node.render(context)
  File "/usr/lib/python2.5/site-packages/django/template/__init__.py", line 888, in render
    return func(*resolved_vars)
  File "/usr/lib/python2.5/site-packages/django/contrib/comments/templatetags/comments.py", line 246, in comment_form_target
    return comments.get_form_target()
  File "/usr/lib/python2.5/site-packages/django/contrib/comments/__init__.py", line 50, in get_form_target
    return urlresolvers.reverse("django.contrib.comments.views.comments.post_comment")
  File "/usr/lib/python2.5/site-packages/django/core/urlresolvers.py", line 252, in reverse
    *args, **kwargs)))
  File "/usr/lib/python2.5/site-packages/django/core/urlresolvers.py", line 241, in reverse
    "arguments '%s' not found." % (lookup_view, args, kwargs))
NoReverseMatch: Reverse for '<function post_comment at 0x12f1c08>' with arguments '()' and keyword arguments '{}' not found.

09/08/08 20:58:28 changed by psychcf

By the way, I tired everything from deleting the pyc files, to playing with my urls.py file.

09/09/08 11:49:40 changed by carljm

  • status changed from reopened to closed.
  • resolution set to worksforme.

Unable to reproduce this on 1.0.

I did have this problem when I first upgraded with "svn up." The culprit was that the old django.contrib.comments had a "urls" directory which was not removed by svn because of the .pyc files in it. The new contrib.comments just has a urls.py file, but the urls directory was masking it. Check your Django source tree under contrib/comments; if there's a urls subdirectory, remove it (you can verify with "svn status" that it shouldn't be there).

09/09/08 13:58:34 changed by psychcf

That did the trick, thanks

10/01/08 17:41:31 changed by hotani

After a long absence, this error has reemerged. It alternates between "Reverse..." and "No module named urls." This is what I am getting currently: 

Environment:

Request Method: GET
Request URL: http://cmdb-test/helpdesk/68/
Django Version: 1.1 pre-alpha SVN-9109
Python Version: 2.4.3
Installed Applications:
['django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.sites',
 'django.contrib.admin',
 'django.contrib.admindocs',
 'django.contrib.comments',
 'cmdb.main',
 'cmdb.docs',
 'cmdb.cicada',
 'cmdb.helpdesk',
 'cmdb.inventory',
 'cmdb.conf_eval',
 'cmdb.kudos']
Installed Middleware:
('django.middleware.common.CommonMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.middleware.doc.XViewMiddleware')


Template error:
In template /home/web/cmdb/templates/comments/form.html, error at line 4
   Caught an exception while rendering: Reverse for '<function post_comment at 0x2ae96de10848>' with arguments '()' and keyword arguments '{}' not found.
   1 : <p class="text_header">Post a comment</p>


   2 : {% load comments %}


   3 : {% get_comment_form for object as form %}


   4 : <form action=" {% comment_form_target %} " name="cform" method="POST">


   5 : {# built-in hidden spam fields #} 


   6 : {% for field in form %}


   7 :   {% if field.is_hidden %}{{ field }}{% endif %} 


   8 : {% endfor %} 


   9 : 


   10 : {# ------- custom fields ---------- #} 


   11 : {# hidden 'honeypot' field #}


   12 : <p style="display:none;">{{ form.honeypot }}</p>


   13 : 


   14 : {# if user is not logged in, show name and e-mail fields #} 


Traceback:
File "/usr/lib/python2.4/site-packages/django/core/handlers/base.py" in get_response
  86.                 response = callback(request, *callback_args, **callback_kwargs)
File "/home/web/cmdb/helpdesk/views.py" in issue_detail
  410.         template_name = 'helpdesk/detail.html',
File "/usr/lib/python2.4/site-packages/django/views/generic/list_detail.py" in object_detail
  143.     response = HttpResponse(t.render(c), mimetype=mimetype)
File "/usr/lib/python2.4/site-packages/django/template/__init__.py" in render
  176.         return self.nodelist.render(context)
File "/usr/lib/python2.4/site-packages/django/template/__init__.py" in render
  768.                 bits.append(self.render_node(node, context))
File "/usr/lib/python2.4/site-packages/django/template/debug.py" in render_node
  71.             result = node.render(context)
File "/usr/lib/python2.4/site-packages/django/template/loader_tags.py" in render
  97.         return compiled_parent.render(context)
File "/usr/lib/python2.4/site-packages/django/template/__init__.py" in render
  176.         return self.nodelist.render(context)
File "/usr/lib/python2.4/site-packages/django/template/__init__.py" in render
  768.                 bits.append(self.render_node(node, context))
File "/usr/lib/python2.4/site-packages/django/template/debug.py" in render_node
  71.             result = node.render(context)
File "/usr/lib/python2.4/site-packages/django/template/loader_tags.py" in render
  97.         return compiled_parent.render(context)
File "/usr/lib/python2.4/site-packages/django/template/__init__.py" in render
  176.         return self.nodelist.render(context)
File "/usr/lib/python2.4/site-packages/django/template/__init__.py" in render
  768.                 bits.append(self.render_node(node, context))
File "/usr/lib/python2.4/site-packages/django/template/debug.py" in render_node
  71.             result = node.render(context)
File "/usr/lib/python2.4/site-packages/django/template/loader_tags.py" in render
  24.         result = self.nodelist.render(context)
File "/usr/lib/python2.4/site-packages/django/template/__init__.py" in render
  768.                 bits.append(self.render_node(node, context))
File "/usr/lib/python2.4/site-packages/django/template/debug.py" in render_node
  71.             result = node.render(context)
File "/usr/lib/python2.4/site-packages/django/template/loader_tags.py" in render
  111.             return self.template.render(context)
File "/usr/lib/python2.4/site-packages/django/template/__init__.py" in render
  176.         return self.nodelist.render(context)
File "/usr/lib/python2.4/site-packages/django/template/__init__.py" in render
  768.                 bits.append(self.render_node(node, context))
File "/usr/lib/python2.4/site-packages/django/template/debug.py" in render_node
  81.             raise wrapped

Exception Type: TemplateSyntaxError at /helpdesk/68/
Exception Value: Caught an exception while rendering: Reverse for '<function post_comment at 0x2ae96de10848>' with arguments '()' and keyword arguments '{}' not found.

Original Traceback (most recent call last):
  File "/usr/lib/python2.4/site-packages/django/template/debug.py", line 71, in render_node
    result = node.render(context)
  File "/usr/lib/python2.4/site-packages/django/template/__init__.py", line 888, in render
    return func(*resolved_vars)
  File "/usr/lib/python2.4/site-packages/django/contrib/comments/templatetags/comments.py", line 246, in comment_form_target
    return comments.get_form_target()
  File "/usr/lib/python2.4/site-packages/django/contrib/comments/__init__.py", line 50, in get_form_target
    return urlresolvers.reverse("django.contrib.comments.views.comments.post_comment")
  File "/usr/lib/python2.4/site-packages/django/core/urlresolvers.py", line 253, in reverse
    return iri_to_uri(u'%s%s' % (prefix, get_resolver(urlconf).reverse(viewname,
  File "/usr/lib/python2.4/site-packages/django/core/urlresolvers.py", line 242, in reverse
    raise NoReverseMatch("Reverse for '%s' with arguments '%s' and keyword "
NoReverseMatch: Reverse for '<function post_comment at 0x2ae96de10848>' with arguments '()' and keyword arguments '{}' not found.

10/02/08 12:27:21 changed by palewire

I encountered this problem while porting from 0.96 to 1.0, but was able to fix it by making sure my root urls.py was modified from: 

(r'^comments/', include('django.contrib.comments.urls.comments')),

to: 

(r'^comments/', include('django.contrib.comments.urls')),

10/02/08 19:01:20 changed by russellm

FYI - this problem was also reported as #9038, which has been fixed on the trunk and 1.0.X branch.

(follow-up: ↓ 18 ) 10/03/08 00:22:44 changed by hotani

I am using svn 9110. 'pyc' files in contrib/comments have been deleted. I've even deleted the entire directory and reloaded it. My url.py files are correct for the new comment system and for the newforms admin. Everything works on dev which is running the django dev server. Yet it fails every time when attempting to load {% comment_form_target %} on two servers running mod_python and apache with the error: "No module named urls."

If I comment out {% comment_form_target %} on these servers, the pages load fine. I've been staring at this error for two days now and am not getting anywhere. Is this bug really fixed?

(in reply to: ↑ 17 ) 10/03/08 07:35:59 changed by russellm

Replying to hotani:

I am using svn 9110. 'pyc' files in contrib/comments have been deleted. I've even deleted the entire directory and reloaded it. My url.py files are correct for the new comment system and for the newforms admin. Everything works on dev which is running the django dev server. Yet it fails every time when attempting to load {% comment_form_target %} on two servers running mod_python and apache with the error: "No module named urls."

The error message that is the cornerstone of this bug is: 

NoReverseMatch?: Reverse for '<function post_comment at 0x01894770>' not found.Request Method: GET Request URL: http://localhost/article/novi/ Exception Type: TemplateSyntaxError? Exception Value: Caught an exception while rendering: Reverse for '<function post_comment at 0x01894770>' not found.

If you are getting "No module named urls." errors, there is something else going on here.

If I comment out {% comment_form_target %} on these servers, the pages load fine. I've been staring at this error for two days now and am not getting anywhere. Is this bug really fixed?

[9087] introduced a test case for this specific problem. Prior to [9087], you would get NoReverseMatch? errors for those test cases; after [9087], the errors are no longer raised. If you can provide a valid test case that raises NoReverseMatch? errors (or any other consistent error message for that matter), please open a new ticket.

10/03/08 09:53:37 changed by hotani

My problem turned out to be my own stupidity--as is often the case. I had not added a urls.py file for a newish application to version control from the dev server (doy!). Error reporting for this lead me here since I have had this 'comment_form_target' issue in the past. None of the errors were specific to my own code; they were all from django which made my problem difficult to hunt down. The 'comment_form_target' tag was always highlighted in the error report.

Sorry for mucking up this old bug report with my trash!

10/17/08 19:26:55 changed by ashanks

  • status changed from closed to reopened.
  • resolution deleted.

It appears that I am having this problem, even on SVN 9234.

I get the following error: Caught an exception while rendering: Reverse for '<function post_comment at 0x134c5b0>' with arguments '()' and keyword arguments '{}' not found.

However, if I remove the line {% render_comment_form for users.userprofile object.id %}, the page works, sans comment form (obviously).

I have meticulously checked and re-checked the setup process, and followed the contrib/comments docs completely.

I have rm'd all old .PYC files in both contrib/comments and in my project's directory.

Please advise. Thanks.

10/17/08 20:40:35 changed by ashanks

  • status changed from reopened to closed.
  • resolution set to worksforme.

Nevermind. I had a new app without any code, but I had included the app.urls in root urls.py, which I guess Django was giving me this panicky exception when an complete other app was trying to use the comments urls declared in the same file.

Sorry _~

10/26/08 04:53:18 changed by hannnndy <web@parsitech.com>

  • status changed from closed to reopened.
  • resolution deleted.

I have this problem too

Please help:

my setting file Installed apps: 

INSTALLED_APPS = (
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.sites',
	'models.news',
	'models.link',
	'models.poll',
	'models.about',
	'models.contact',
	'django.contrib.admin',
	'django.contrib.comments',INSTALLED_APPS = (
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.sites',
	'models.news',
	'models.link',
	'models.poll',
	'models.about',
	'models.contact',
	'django.contrib.admin',
	'django.contrib.comments',

generated error :

TemplateSyntaxError? at /news/1/

Caught an exception while rendering: Reverse for '<function post_comment at 0x0175EE30>' with arguments '()' and keyword arguments '{}' not found.

Original Traceback (most recent call last):

File "c:\python25\lib\site-packages\django\template\debug.py", line 71, in render_node

result = node.render(context)

File "c:\python25\lib\site-packages\django\template\init.py", line 888, in render

return func(*resolved_vars)

File "c:\python25\lib\site-packages\django\contrib\comments\templatetags\comments.py", line 246, in comment_form_target

return comments.get_form_target()

File "c:\python25\lib\site-packages\django\contrib\comments\init.py", line 50, in get_form_target

return urlresolvers.reverse("django.contrib.comments.views.comments.post_comment")

File "c:\python25\lib\site-packages\django\core\urlresolvers.py", line 252, in reverse

*args, **kwargs)))

File "c:\python25\lib\site-packages\django\core\urlresolvers.py", line 241, in reverse

"arguments '%s' not found." % (lookup_view, args, kwargs))

NoReverseMatch?: Reverse for '<function post_comment at 0x0175EE30>' with arguments '()' and keyword arguments '{}' not found.

Request Method: GET Request URL: http://127.0.0.1:8000/news/1/ Exception Type: TemplateSyntaxError? Exception Value:

Caught an exception while rendering: Reverse for '<function post_comment at 0x0175EE30>' with arguments '()' and keyword arguments '{}' not found.

Original Traceback (most recent call last):

File "c:\python25\lib\site-packages\django\template\debug.py", line 71, in render_node

result = node.render(context)

File "c:\python25\lib\site-packages\django\template\init.py", line 888, in render

return func(*resolved_vars)

File "c:\python25\lib\site-packages\django\contrib\comments\templatetags\comments.py", line 246, in comment_form_target

return comments.get_form_target()

File "c:\python25\lib\site-packages\django\contrib\comments\init.py", line 50, in get_form_target

return urlresolvers.reverse("django.contrib.comments.views.comments.post_comment")

File "c:\python25\lib\site-packages\django\core\urlresolvers.py", line 252, in reverse

*args, **kwargs)))

File "c:\python25\lib\site-packages\django\core\urlresolvers.py", line 241, in reverse

"arguments '%s' not found." % (lookup_view, args, kwargs))

NoReverseMatch?: Reverse for '<function post_comment at 0x0175EE30>' with arguments '()' and keyword arguments '{}' not found.

Exception Location: c:\python25\lib\site-packages\django\template\debug.py in render_node, line 81 Python Executable: c:\python25\python.exe Python Version: 2.5.2 Python Path: ['C:\\Documents and Settings\\Mohammad\\Desktop\\witna', 'C:\\WINDOWS\\system32\\python25.zip', 'c:\\python25\\DLLs', 'c:\\python25\\lib', 'c:\\python25\\lib\\plat-win', 'c:\\python25\\lib\\lib-tk', 'c:\\python25', 'c:\\python25\\lib\\site-packages', 'c:\\python25\\lib\\site-packages\\PIL', 'c:\\python25\\lib\\site-packages\\wx-2.8-msw-unicode'] Server time: Sun, 26 Oct 2008 13:12:02 +0330 Template error

In template c:\python25\lib\site-packages\django\contrib\comments\templates\comments/form.html, error at line 2 Caught an exception while rendering: Reverse for '<function post_comment at 0x0175EE30>' with arguments '()' and keyword arguments '{}' not found. 1 {% load comments %} 2 <form action="{% comment_form_target %}" method="POST"> 3 {% for field in form %} 4 {% if field.is_hidden %} 5 {{ field }} 6 {% else %} 7 <p 8 {% if field.errors %} class="error"{% endif %} 9 {% ifequal field.name "honeypot" %} style="display:none;"{% endifequal %}> 10 {% if field.errors %}{{ field.errors }}{% endif %} 11 {{ field.label_tag }} {{ field }} 12 </p>

in template file usage: 

		<b>{{ news.super_title }}</b>
		<h1>{{ news.title }}</h1>
		<br>
		<em>{{ news.abstract }}</em>
		<br>
		<br>
		{{ news.body|linebreaksbr }}
		<br>
		<br>
		<a href="../"> بازگشت </a>
		{% load comments %}

		{% get_comment_count for news as comment_count %}

		<p>This news has {{ comment_count }} comments.</p>
		
		{% render_comment_form for news.News news.id %}

10/26/08 09:12:11 changed by carljm

  • status changed from reopened to closed.
  • resolution set to worksforme.

This is not a bug in Django, it is a configuration issue. Ask for help on the django-users mailing list, not on the ticket tracker.

12/17/08 09:44:42 changed by mandric

This is a bug in Django since the exception/stacktrace that gets rendered is nearly useless. The problem is farther down in the stack and the templating plumbing is clogging up proper raising of the error. Lately when I get TemplateSyntaxError? it is unrelated to the actual problem I see this as an important issue for django.

So after a thorough cleanup of my urls.py and removal of .pyc files this bug disappeared for me. Sure it was a configuration issue but I had to guess where the problem might be so this is a bug in django since the proper exception was not raised. It does not seem related to django.contrib.comments component but there should be a ticket open for this template plumbing issue. It would be nice if we could link to that issue/ticket, if it exists, from this ticket. A bit of testing to make sure the template system raises the correct error when there is an issue in urls.py would be a good start, not sure if that exists already.

02/09/09 11:59:40 changed by polz@aufbix.org

adding (r'comments/', include('django.contrib.comments.urls'), to urlpatterns in urls.py fixes this issue for me.

02/22/09 07:43:43 changed by call_of_duty_6

The culprit was that the old django.contrib.comments had a "urls" directory which was not removed by svn because of the .pyc *search files in it.

02/25/09 13:51:44 changed by

  • milestone deleted.

Milestone post-1.0 deleted

01/16/10 13:13:22 changed by usharf

Just in case someone else finds this bug following a similar error, I've seen this appear when you don't have a matching route in your app's urls.py while referring to the path in a a template.

For example:

in views.py

def show_blog(request, key):
    return object_detail(request, Blog.all(), key)

def add_blog(request):
    return create_object(request, form_class=BlogForm,
        post_save_redirect=reverse('blog.views.show_blog',
                                   kwargs=dict(key='%(key)s')))

in a template:

<p>No blogs found. You can start a <a href="{% url blog.views.add_blog %}">new blog</a>.</p>

If there no route for "add_blog" in your urls.py, you'll see this error. 

(r'^create/$', 'add_blog'),

Add/Change #8571 (comment framework throws obscure exception in {% comment_form_target %})




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