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PODjango NoReverseMatch Error in blog tutorial modification
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copied!<p>I just did the Django blog tutorial found here: <a href="http://brenelz.com/blog/a-detailed-django-tutorial-blog-basics-part-iv/" rel="nofollow">Blog tutorial</a></p> <p>I am now trying to add a functionality that will count the number of views a blog post has received. To do that I added the following to views.py (note that views.py is completely empty in the tutorial because it uses Django generic views):</p> <pre><code>def detail_view(request, object_id): object = Post.objects.filter(id=object_id) object.update(counter = F('counter') + 1) return render_to_response('posts/post_detail.html', {'object':object}, context_instance=RequestContext(request)) </code></pre> <p>Not sure if I did that render_to_response correctly. My urls.py is now:</p> <pre><code>from models import Post queryset = {'queryset': Post.objects.order_by('-pub_date')} urlpatterns = patterns('', url('^$', 'django.views.generic.list_detail.object_list', queryset, name="posts"), url('^(?P<object_id>\d+)/$', 'posts.views.detail_view', name="post") </code></pre> <p>My post_list.html has the following code that creates a link to post_detail.html:</p> <pre><code><a href={% url post object.id %}>{{ object.title }}</a> </code></pre> <p>And the full error is:</p> <pre><code>> Exception Value: Caught NoReverseMatch while rendering: Reverse for 'post' with arguments '('',)' and keyword arguments '{}' not found. Traceback: > Environment: Request Method: GET Request URL: localhost:8000/1/ Django Version: 1.3 Python Version: 2.6.1 Installed Applications: ['django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.sites', 'django.contrib.messages', 'django.contrib.comments', 'django.contrib.admin', 'Blog.posts', 'Blog.categories'] Installed Middleware: ('django.middleware.common.CommonMiddleware', 'django.contrib.sessions.middleware.SessionMiddleware', 'django.middleware.csrf.CsrfViewMiddleware', 'django.middleware.csrf.CsrfResponseMiddleware', 'django.contrib.auth.middleware.AuthenticationMiddleware', 'django.contrib.messages.middleware.MessageMiddleware') Template error: In template /Users/kevin/PycharmProjects/Blog/templates/posts/_post.html, error at line 3 Caught NoReverseMatch while rendering: Reverse for 'post' with arguments '('',)' and keyword arguments '{}' not found. 1 : <div id=”object_{{ object.id }}”> 2 : <h2> 3 : <a href= {% url post object.id %} >{{ object.title }}</a> 4 : <small>{{ object.pub_date|timesince }} ago</small> 5 : </h2> 6 : {{ object.body }} 7 : </div> Traceback: File "/Library/Python/2.6/site-packages/django/core/handlers/base.py" in get_response 111. response = callback(request, *callback_args, **callback_kwargs) File "/Users/kevin/PycharmProjects/Blog/posts/views.py" in detail_view 12. return render_to_response('posts/post_detail.html', {'object':object}, context_instance=RequestContext(request)) File "/Library/Python/2.6/site-packages/django/shortcuts/__init__.py" in render_to_response 20. return HttpResponse(loader.render_to_string(*args, **kwargs), **httpresponse_kwargs) File "/Library/Python/2.6/site-packages/django/template/loader.py" in render_to_string 188. return t.render(context_instance) File "/Library/Python/2.6/site-packages/django/template/base.py" in render 123. return self._render(context) File "/Library/Python/2.6/site-packages/django/template/base.py" in _render 117. return self.nodelist.render(context) File "/Library/Python/2.6/site-packages/django/template/base.py" in render 744. bits.append(self.render_node(node, context)) File "/Library/Python/2.6/site-packages/django/template/debug.py" in render_node 73. result = node.render(context) File "/Library/Python/2.6/site-packages/django/template/loader_tags.py" in render 127. return compiled_parent._render(context) File "/Library/Python/2.6/site-packages/django/template/base.py" in _render 117. return self.nodelist.render(context) File "/Library/Python/2.6/site-packages/django/template/base.py" in render 744. bits.append(self.render_node(node, context)) File "/Library/Python/2.6/site-packages/django/template/debug.py" in render_node 73. result = node.render(context) File "/Library/Python/2.6/site-packages/django/template/loader_tags.py" in render 64. result = block.nodelist.render(context) File "/Library/Python/2.6/site-packages/django/template/base.py" in render 744. bits.append(self.render_node(node, context)) File "/Library/Python/2.6/site-packages/django/template/debug.py" in render_node 73. result = node.render(context) File "/Library/Python/2.6/site-packages/django/template/loader_tags.py" in render 159. return self.render_template(self.template, context) File "/Library/Python/2.6/site-packages/django/template/loader_tags.py" in render_template 141. output = template.render(context) File "/Library/Python/2.6/site-packages/django/template/base.py" in render 123. return self._render(context) File "/Library/Python/2.6/site-packages/django/template/base.py" in _render 117. return self.nodelist.render(context) File "/Library/Python/2.6/site-packages/django/template/base.py" in render 744. bits.append(self.render_node(node, context)) File "/Library/Python/2.6/site-packages/django/template/debug.py" in render_node 73. result = node.render(context) File "/Library/Python/2.6/site-packages/django/template/defaulttags.py" in render 450. raise e Exception Type: TemplateSyntaxError at /1/ Exception Value: Caught NoReverseMatch while rendering: Reverse for 'post' with arguments '('',)' and keyword arguments '{}' not found. </code></pre> <p>I have been trying to figure out what's wrong for hours, but have not found an answer. I've read a bunch of stuff here on SO.com as well, but still no luck.</p> <p>Your help is much appreciated.</p> <p>Thanks!</p>

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