NoReverseMatch with Python Social Auth/Facebook Login

Question

I'm trying to use Facebook login with Python Social Auth, but I'm getting the following message when I login and facebook returns to my site:

NoReverseMatch at /
Reverse for 'begin' with arguments '(u'facebook',)' and keyword arguments '{}' not found. 1 pattern(s) tried: [u'$login/(?P<backend>[^/]+)/$']

Here are my views:

def home(request):
    """Home view, displays login mechanism"""
    if request.user.is_authenticated():
        return redirect('done')
    return render_to_response('home.html', {
        'plus_id': getattr(settings, 'SOCIAL_AUTH_FACEBOOK_KEY', None)
    }, RequestContext(request))


@login_required
def done(request):
    """Login complete view, displays user data"""
    scope = ' '.join(FacebookAuth.DEFAULT_SCOPE)
    return render_to_response('done.html', {
        'user': request.user,
        #'plus_id': getattr(settings, 'SOCIAL_AUTH_GOOGLE_PLUS_KEY', None),
        #'plus_scope': scope
    }, RequestContext(request))

This is the entire Traceback:

Environment:


Request Method: GET
Request URL: http://127.0.0.1:8000/

Django Version: 1.6.1
Python Version: 2.7.5
Installed Applications:
('django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'reviews',
 'south',
 'taggit',
 'register',
 'endless_pagination',
 'social.apps.django_app.default')
Installed Middleware:
('django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware')


Traceback:
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
  114.                     response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/Users/filipeferminiano/Documents/django/tests/consumidor/reviews/views.py" in home
  19.         return redirect('done')
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/shortcuts/__init__.py" in redirect
  78.     return redirect_class(resolve_url(to, *args, **kwargs))
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/shortcuts/__init__.py" in resolve_url
  151.         return urlresolvers.reverse(to, args=args, kwargs=kwargs)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/urlresolvers.py" in reverse
  509.     return iri_to_uri(resolver._reverse_with_prefix(view, prefix, *args, **kwargs))
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/urlresolvers.py" in _reverse_with_prefix
  429.                              (lookup_view_s, args, kwargs, len(patterns), patterns))

Exception Type: NoReverseMatch at /
Exception Value: Reverse for 'done' with arguments '()' and keyword arguments '{}' not found. 0 pattern(s) tried: []

This is my urls.py

urlpatterns = patterns("",
    url(r'^$', 'reviews.views.home'),
    url(r"^admin/", include(admin.site.urls)),

    #registration
    #url('^accounts/', include('registration.urls')),
    url(r'^accounts/', include('registration.backends.simple.urls')),
    #url(r'^accounts/login/$', 'django.contrib.auth.views.login'),
    #url(r'^accounts/login/$', 'reviews.views.login'),
    url('^accounts/logout/$', 'django.contrib.auth.views.logout', {'next_page' : '/accounts/login'}),
   #url('^accounts/profile/$', 'reviews.views.profile'), 
    #search
    #url(r'^search/$', 'reviews.views.search'),

    #user profile
    #url(r'users/(?P<user>[^/]+)/$', 'reviews.views.profile'),

    #social
    url('', include('social.apps.django_app.urls', namespace='social')),


    #submit reviews
    #url(r'^submit/(?P<slug>[^/]+)/review_submit/$','reviews.views.single_product', name='submit-review'),    

    #category
    #url(r'^cat/(?P<cat>[^/]+)/$', 'reviews.views.category', name='category'),

    #product
    #url(r'^prod/(?P<slug>[^/]+)/$', 'reviews.views.single_product', name='product_detail'),


    #google webmaster tools
    (r'^googlece9fb428b0c84a39\.html$', lambda r: HttpResponse("google-site-verification: googlece9fb428b0c84a39.html", mimetype="text/plain")),

    #robots.txt crawler
    (r'^robots\.txt$', lambda r: HttpResponse("User-agent: *\nDisallow: ", mimetype="text/plain")),





)

This is my home html

{% block content %}
<a href="{% url 'social:begin' 'facebook' %}">Facebook OAuth2</a> <br />
<a href="{% url 'social:begin' 'facebook-app' %}">Facebook App</a> <br />

<a href="{% url 'social:begin' 'email' %}">Email Auth</a> <br />
<a href="{% url 'social:begin' 'username' %}">Username Auth</a> <br />

<form action="{% url 'social:begin' 'openid' %}" method="post">{% csrf_token %}
  <div>
    <label for="openid_identifier">OpenId provider</label>
    <input id="openid_identifier" type="text" value="" name="openid_identifier" />
    <input type="submit" value="Login" />
  </div>
</form>

<form action="{% url 'social:begin' 'livejournal' %}" method="post">{% csrf_token %}
  <div>
    <label for="openid_lj_identifier">LiveJournal ID</label>
    <input id="openid_lj_identifier" type="text" value="" name="openid_lj_user" />
    <input type="submit" value="Login" />
  </div>
</form>

<form method="post" action="{% url 'social:complete' 'persona' %}">{% csrf_token %}
  <input type="hidden" name="assertion" value="" />
  <a rel="nofollow" id="persona" href="#">Persona</a>
</form>

{% if plus_id %}
<form id="google-plus" method="post" action="{% url 'social:complete' 'google-plus' %}">{% csrf_token %}
  <input id="at" type="hidden" name="access_token" value="" />
  <input id="code" type="hidden" name="code" value="" />

  <div id="signinButton">
    <span class="g-signin" data-scope="{{ plus_scope }}"
                           data-clientid="{{ plus_id }}"
                           data-redirecturi="postmessage"
                           data-accesstype="offline"
                           data-cookiepolicy="single_host_origin"
                           data-callback="signInCallback">
    </span>
  </div>
</form>
{% endif %}

{% endblock %}

Answer 1

Check Django redirect docs at https://docs.djangoproject.com/en/1.6/topics/http/shortcuts/#redirect, your redirect('done') should refer to a view name, which looking at your urls.py it's not defined, so you are trying to redirect the user to an URL you didn't register.

In order to make it work try adding this entry to your urls.py

...
url(r'^done$', 'reviews.views.done', name='done')
...