CODEWITHSUNDEEP
django
Minh-Hung Nguyen
Minh-Hung Nguyen

Reputation: 1254

Error NoReverseMatch on Reverse Django URL

I have declared an url like following in django 1.7:

url(r'^page(/\w{2}/|/)$', MyView.as_view(), name='my_name'),

In my template, I want to reverse the url from its name. I tried:

<form  method="post" action="{% url 'my_namespace:my_name' variable %}">

<form  method="post" action="{% url 'my_namespace:my_name' %}">

But nothing works, it throwed exception:

Reverse for 'my_name' with arguments '(u'test',)' and keyword arguments '{}' not found. 1 pattern(s) tried: ['page(\/\w{2}\/|\/)$']

Please help by giving me some advice. Thank you.

Upvotes: 0

Views: 410

Answers (1)

Kevin Cherepski
Kevin Cherepski

Reputation: 1483

The regex appears incorrect for matching the argument 'test'.

If we take a look at the regex (/\w{2}/|/), It appears to be capturing two groups which are separated by an 'OR' (|) operator.

The first group is /\w{2}/. This is only going to match '/' followed by \w only 2 times followed by '/'.

The second group is only matching '/'.

'test' doesn't match either one of these cases so it raises an exception.

I believe the correct regex we are looking to capture here would be,

(\w+)

The correct URL structure would look like this,

url(r'^page/(\w+)/$', MyView.as_view(), name='my_name')
url(r'^page/$', MyView.as_view(), name='my_name')

This would match given the argument 'test' because the regex (\w+) says match any of the characters in this group [a-zA-Z0-9_] one or more times and each character in 'test' falls into this category.

Upvotes: 4

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