CODEWITHSUNDEEP
pythondjangotemplates
ejk314
ejk314

Reputation: 381

Django Reverse URL Lookup Template Error

I'm having a bit of trouble with reverse URL lookups in Django.

From the template:

<form action="{% url 'blog:save' post.slug %}" method="post">

From urls:

url(r'^post/(?P<slug>\w+)/save/$', views.save, name='save'),

From views:

def save(request, slug):
    return HttpResponse("Not Saved.")

Error I'm getting:

Exception Type: NoReverseMatch
Exception Value:
Reverse for 'save' with arguments '(u'',)' and keyword arguments '{}' not found.

Upvotes: 1

Views: 728

Answers (1)

culebr&#243;n
culebr&#243;n

Reputation: 36473

post.slug variable in your template is an empty string, but your url requires 1 or more characters (\w+). So Django builds /post//save/, but this url is invalid.

If you need to save a new post with no slug, use an optional subpattern in url:

r'^post/(?:(?P<slug>\w+)/)?save/'

Upvotes: 3

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