Class generic DeleteView not working for model related to model - django

Question

I have a page containing assignment questions.
Questions related to assignment is displayed on asisgnment details page with EDIT and DELETE anchor tags.
But after pressing delete I get an error : Reverse for 'CreateQuestion' with arguments '('',)' not found. 1 pattern(s) tried: ['assignment/(?P[0-9]+)/createQuestion/$']
views.py
class AssignmentDelete(DeleteView):
model = Assignment
template_name = "dashboard/assignment_list.html"
success_url = reverse_lazy('ViewAssignment')
def get(self, request, *args, **kwargs):
return self.delete(request, *args, **kwargs)
class AssignmentDetailView(generic.DetailView):
model = Assignment
template_name = "dashboard/assignment_detail.html"
class QuestionDeleteView(DeleteView):
model = Question
template_name = 'dashboard/assignment_detail.html'
def get_success_url(self):
return reverse_lazy('assignment_detail', kwargs={'pk': self.object.assignment_id})
urls.py
path('<int:assignment_pk>/DeleteQuestion/<int:pk>/delete', views.QuestionDeleteView.as_view(), name='DeleteQuestion'),
path('<int:pk>/createQuestion/', views.QuestionCreate, name='CreateQuestion'),
path('assignment/<int:pk>', views.AssignmentDetailView.as_view(), name='assignment_detail'),
assignment_detail.html
{% extends "./base.html" %}
{% block content %}
<h1>Course:{{assignment.course }}</h1>
<p><strong>Assignment:</strong> {{ assignment.number }}</p>
<p><strong>publish_date:</strong> {{ assignment.publish_date }}</p>
<p><strong>deadline:</strong> {{assignment.deadline_date}}</p>
<div style="margin-left:20px;margin-top:20px">
<h4>Questions</h4>
<table class="table">
<thead class="thead-light">
<tr>
<th scope="col">Question Title</th>
<th scope="col">Question Marks</th>
<th scope="col">Edit Question</th>
<th scope="col">Delete Question</th>
</tr>
</thead>
<tbody>
{% for question in assignment.question_set.all %}
<tr>
<td>{{ question.title }}</td>
<td>{{ question.marks }}</td>
<td> Edit </td>
<td> <a onclick="return confirm('Are you sure?');" href="{% url 'DeleteQuestion' assignment_pk=assignment.id pk=question.id %}">Delete</a></td>
</tr>
{% endfor %}
</tbody>
</table>
<a class=" btn btn-primary" href="{% url 'CreateQuestion' assignment.id %}">Add Question</a>
</div>
{% endblock %}
{% block script %}
{% endblock %}
Models.py
class Assignment(models.Model):
number = models.IntegerField()
course = models.ForeignKey(Course,on_delete = models.SET_NULL,blank=True,null=True)
publish_date = models.DateField(auto_now_add = True)
deadline_date = models.DateField()
faculty = models.ForeignKey(Faculty,on_delete = models.SET_NULL,blank=True,null=True)
def __str__(self):
return f'Assignment {self.number}-{self.course}'
def get_absolute_url(self):
"""Returns the url to access a detail record for this Assignment."""
return reverse('assignment-detail', args=[str(self.id)])
class Question(models.Model):
assignment = models.ForeignKey(Assignment, on_delete=models.SET_NULL,blank=True,null=True)
username = models.ForeignKey(User,on_delete=models.SET_NULL,blank=True,null=True)
title = models.CharField(max_length = 200)
description = models.TextField(blank=True , null = True)
marks = models.IntegerField(null=True)
date = models.DateTimeField(auto_now_add=True)
def __str__(self):
return self.title
def get_absolute_url(self):
"""Returns the url to access a detail record for this book."""
return reverse('question-detail', args=[str(self.id)])
The Assignment detail page with questions associated with it

Answer 1

I did some changes to my code and added a get method and now its working as I wanted it to.
It would be great if someone point out any risk related it.Thank you all for your time in helping in my problem
here is the UPDATED code :
class QuestionDeleteView(DeleteView):
model = Question
template_name = "dashboard/assignment_detail.html"
self.object.assignment_id})
def get(self, request, *args, **kwargs):
return self.delete(request, *args, **kwargs)
def get_success_url(self):
return reverse_lazy('assignment_detail', kwargs={'pk': self.object.assignment_id})