While I believed that my template's if/else/endif logic would resolve the issue, I encountered a NoReverseMatch error when trying to access /

I received an error message as follows:

NoReverseMatch for 'grouplocation_add' with arguments '('',)' not found. 1 pattern(s) tried: [u'ipaswdb/grouplocations/add/(?P<pk>[0-9]+)/$']

After adding context['group_id']=None to createview, I encountered this issue:

NoReverseMatch: Reverse for 'grouplocation_add' with arguments '(None,)' not found. 1 pattern(s) tried: [u'ipaswdb/grouplocations/add/(?P<pk>[0-9]+)/$']

The URL pattern in question:

url(r'^grouplocations/add/(?P<pk>[0-9]+)/$', GroupLocationCreateView.as_view(), name='grouplocation_add'),

Although the update works with an existing group_id, it fails when trying to create a new one. The {% if ... %} and {% else %} statements were supposed to handle this scenario.

I suspect that the issue lies in my

url 'ipaswdb:grouplocation_add group_id
when there is no group ID present for a new entry. The button functionality should be disabled until the form has been submitted and model saved - then enable it only for updating the model.

  {% if group_id %}
    <td><a href=""><button disabled type="button" id="group_add_location" class="btn btn-primary">Add A Group 
    Location</button></a> </td>
  {% else %}
    <td><a href="{% url 'ipaswdb:grouplocation_add' group_id %}"><button type="button" id="group_add_location" class="btn btn-primary">Add A Group 
  {% endif %}

The error suggests a different approach is needed. I also want to save and return to the update view instead of the create view. How can I achieve this within my code?

 class GroupCreateView(CreateView):
         ..do tons of stuf
      def get_context_data(self, **kwargs): 
        ..do more stuf 
         context['group_id'] = None #added this
      def post(self, request, *args, **kwargs):
         if self.request.POST.has_key('submit'):
            ..DO LOTS OF STUFF..
         return HttpResponseRedirect("") 

Considering that the group_id exists once the page loads from the UpdateView, do I need to redirect to the UpdateView after creating? How can I pass the newly created model to the UpdateView in one step?

1) Why am I getting the error within the if-else block?

2) Once the error is fixed, how can I make the if-else block function correctly, transitioning from the create view (after the HttpResponseRedirect) to calling the UpdateView with the newly created model and assigned group_id?

Answer №1

It seems that the group_id is not defined in your else statement, resulting in it being none. To fix this issue, make sure to explicitly set the field as none.

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