django parameter gets none even on redirect with parameter

Question

I have the following view that I want to only stay in the current view if it hasn't been redirected.

def surveys_view(request, survey=None):
    if survey != 'survey1':
            return redirect('matching:surveys', survey='survey1')

My urls.py looks like this:

url(r'^surveys', views.surveys_view, name='surveys'),
url(r'^surveys/(?P<survey>survey1|survey2)', views.surveys_view, name='surveys'),

The problem is that the survey variable is None every time causing infinite redirects. I would think that after the redirect, the survey value would be set to 'survey1'.

How can I have the survey parameter set to 'survey1' instead of None?

Answer 1

in django urls list is parsed from 0th position, so in your urls,

url(r'^surveys', views.surveys_view, name='surveys')

has first priority, since the regular expression matches like any uri starting with surveys<whatever>, so either change the url settings to,

url(r'^surveys/$', views.surveys_view, name='survey-list'),
url(r'^surveys/(?P<survey>survey1|survey2)', views.surveys_view, name='survey-details'),

or change the order

url(r'^surveys/(?P<survey>survey1|survey2)', views.surveys_view, name='survey-detail'),
url(r'^surveys', views.surveys_view, name='survey-list'),

NOTE: notice there is also change in name parameter, since it is better to be set as a unique value