How to output url correctly?

Question

Django

There is a url

url(r'^(?P<slug>[-\w]+)/(?P<id>[-\w]+)/create-feedback/$', feedback_create_id, name='create_feedback_id'),

And I need to specify the url to open the form in the modal window, and in the form action. And it turns out that you need to specify
{% url 'create_feedback_id' order.slug start.id %}
an error when opening the form.

django.core.urlresolvers.NoReverseMatch: Reverse for 'create_feedback_id' with arguments '('', '')' and keyword arguments '{}' not found. 1 pattern(s) tried: ['(?P<slug>[-\\w]+)/(?P<id>[-\\w]+)/create-feedback/$']

Answer 1

It looks like your variables order.slugare start.ideither empty or undefined. They don't fit, because in the url you have a [-\w]+plus sign that says at least one character must be present (which is logical). And the syntax seems to be correct.