On Saturday, 21 September 2013 04:44:33 UTC+1, Trung Nguyen wrote:
> Django Version:1.5.2Exception Type:NoReverseMatchException Value:
>
> Reverse for 'gradingstudent' with arguments '()' and keyword arguments
> '{u'student_id': None, u'school_id': 1}' not found.
>
> Exception
> Location:/usr/local/lib/python2.7/dist-packages/django/template/defaulttags.py
>
> in render, line 424Python Executable:/usr/bin/pythonPython Version:2.7.4
> I am new to Django. I got this error and struggle to find a solution for
> it but no luck. Please help!
>
> View.py def grading_student(request, school_id=1, student_id=1):
> urls.py
> url(r'^(?P<school_id>\d+)/gradings/gradingstudent/(?P<student_id>\d+)/$',
> views.grading_student, name='gradingstudent'),
>
> from template :
> if I use :
> a href="{% url 'contest:gradingstudent' school_id=1 student_id=1 %}">
> Enter Student Score </a
> It work. But when I try to replace 1 by form.instance.id i got error
> about.
>
> a href="{% url 'contest:gradingstudent' school_id=1 student_id=
> form.instance.id %}"> Enter Student Score </a
>
> if I change to this url
>
> a href="{% url 'contest:gradingstudent' school_id=1 student_id %}"> {{
> form.instance.id}} Enter Student Score </a
> I got other error
>
> Don't mix *args and **kwargs in call to reverse()!
>
> What is the properway to do?
>
>
> Thanks,
>
>
The error is telling you that form.instance.id is None. Presumably this is
because you are on an add form, and the instance hasn't been created yet -
in which case you can't link to its contest page.
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