Django通过发布请求删除对象

Question

I want to delete an object via clicking on a glyphicon wrapped in a form. To do this, my function looks like this:

def deleteHabit(request, id):
    print('deleteHabit')
    habit_to_delete = get_object_or_404(Habit, id=id)
    print(habit_to_delete)

    if (request.method == 'POST'):
         form = HabitForm(instance=habit_to_delete)
         if form.is_valid(): # checks CSRF
              print('delete') # normally habit_to_delete.delete()
         return redirect('renderOverview') # wherever to go after deleting
    else:
         # Not Working
         return render(request, 'overview/habit_delete_confirm', args)

My understanding of Post and Get is the 'Post' condition does roughly the deleting part and the 'Get' condition renders a confirmation page for example to confirm the deletion. However, the object will be deleted, but by clicking the form it redirects to success_url and does not show a confirmation page. What's wrong on the code snippet above?

Answer 1

Sry for answering this question so late, but I'm very busy atm. Another reason why I did'nt answer was that your answer is not the answer I was looking for. You can handle a CRUD operation either by a function (see above) or with a generic view (as you suggested). My function above was not correctly in more than one cases, but in question case, I did not get confirmation page, which means, I didn't get the 'GET REQUEST'. So, my mistake was not the function, but rather the correct url mapping.

Independently I'm using a DeleteView for now.

in views.py:

class HabitDeleteView(DeleteView):
    model = Habit
    success_url = reverse_lazy('display_habits')

in urls.py:

  url(r'^habit/(?P<pk>\d+)/delete$', habits_views.HabitDeleteView.as_view(), name='delete_habit'),

in template I'm using this:

    <a href="{% url 'delete_habit' habit.pk %}">
    <span class="glyphicon glyphicon-trash custom-trash-habit-detail"></span>
    </a>