prepopulate form with model instance values using UpdateView and ModelForm

Hey folks,

Question for you all. Appreciate any insight you can give. So I have a class-based view (UpdateView) and a ModelForm. I want the form to pre-populate with data from a model instance. I've googled around a lot, couldn't find a plug n' play solution. I have a partial solution but it feels really hacky. It's also getting to the point where it's not working so well. I figure there must be a more djangoistic way to get this done. Here's the view from views.py. selected_task is from a hidden input where I'm storing the ID. I think there's probably a better way to do that too, but this was working for me.

class ModifyTaskView(LoginRequiredMixin, generic.UpdateView):
    """
    Update an existing task.
    """
    form_class=ModifyTaskForm
    template_name = 'tracktasks/modifytask.html'




    def form_valid(self, form):
        form.instance.user = self.request.user


        if form.instance.is_timed:
            # convert from seconds to minutes
            form.instance.total_time *=60
            form.instance.remaining_time = form.instance.total_time


        return super(ModifyTaskView, self).form_valid(form)


    def get_initial(self):


        initial = super(ModifyTaskView, self).get_initial()
        task = Task.objects.get(pk=self.request.POST['selected_task'])
        initial['name'] = task.name
        initial['date_type'] = task.date_type
        initial['is_timed'] = task.is_timed
        initial['date'] = task.date
        initial['total_time'] = task.total_time
        initial['recurring'] = task.recurring
        return initial


    def get_object(self):
        print(self.request.POST)
        obj = Task.objects.get(pk=self.request.POST['selected_task'])
        return obj;


    def get_success_url(self):
        return reverse_lazy('tracktasks:index')

Here's the form from forms.py, with the leading function being my current solution and the source of much headache, very nowhere going.

def display_field_values(fields, kwargs):
    for field in fields:
        widget = fields[field].widget
        field_type = widget.__class__.__name__
        initial_value = kwargs['initial'][field]


        if any(item in field_type for item in ["TimeInput", "TextInput"]):
            widget.attrs['value'] = initial_value


        elif field_type == "CheckboxInput":
            if fields[field].widget.check_test(initial_value):
                widget.attrs['checked'] = ''
        elif field_type == "Select":
            print(field_type)
            for choice in widget.choices:
                if initial_value in choice:
                    print(choice)
                    print(initial_value)
                    # print(widget.render_option(selected_choices=initial_value, option_value=choice[0], option_label=choice[1]))


        elif field_type == "SelectDateWidget":
            print(widget.data)


class ModifyTaskForm(forms.ModelForm):




    def __init__(self, *args, **kwargs):
        super(ModifyTaskForm, self).__init__(*args, **kwargs)


        display_field_values(self.fields, kwargs)




    class Meta:
        model = Task
        fields = ['id','name', 'date_type', 'date',
                  'is_timed', 'total_time', 'recurring']
        widgets = {
                'date':  forms.SelectDateWidget(),
                'total_time': forms.TimeInput(),
        }
        help_texts = {
            'total_time': ('minutes.'),
    }

So yeah, any insight, guidance or free advice would be a huge help. Someday I hope to return the favor by helping somebody else out. Just one person though. Don't want to go overboard.

Thanks again!

Ben

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