ValueError when getting objects by id

Question

I\'m trying to get data by id in my django app. The problem is that I don\'t know the kind of id the user will click on. I input the below codes in views.

Views

Answer 1

You misplaced a closing parenthesis:

url(r'^cribme/(?P\d+)/$', 'meebapp.views.cribdetail', name='cribdetail'),

Note that the (?P .. ) group construct should include the \d+ characters you are trying to match. In your incorrect regular expression you define a group that doesn't include any matched characters, thus always the empty string ''.