CODEWITHSUNDEEP
djangoformsmany-to-manymanytomanyfield
user3691815
user3691815

Reputation: 13

DJANGO Issue with ManyToManyField in Form

First of all english isn't my main language so please don't yell on me ;)

I have model with ManyToManyField. And I made for this form, but i can't add new items with this form. My kode looks like that:

forms.py

class NoteForm(forms.Form):
    title = forms.CharField(max_length = 100)
    author = forms.CharField(max_length = 100)
    description = forms.TexField()
    type = forms.CharField(max_length = 10)
    disciple = forms.ManyToManyField(queryset=Disciple.objects.all())

views.py

def new_note(request):
    note = Diary.objects.all()
    disc = Disciple.objects.all()
    form = NoteForm(request.POST)
    if form.is_valid():
        note_form = form.save(commit=False)
        data = request.POST.copy()
        note_form.title = form.cleaned_data['title']
        note_form.author = form.cleaned_data['author']
        note_form.description = form.cleaned_data['description']
        note_form.type = form.cleaned_data['type']
        note_form.disciple = form.cleaned_data['disciple']
        for item in  note_form.disciple:
            note_form.disciple.add(item)
        note_form.save()
        form = NoteForm()
        return render_to_response('dziennik/users.html', {'note': note, 'form': form},
                    context_instance=RequestContext(request))
    else:
            return render_to_response('dziennik/new_note.html', {'note': note, 'form': form},
                    context_instance=RequestContext(request))

And when im trying to add new object im getting error in this line:

note_form.disciple = form.cleaned_data['disciple']

And the error is:

"Diary: Diary object" needs to have a value for field "diary" before this many-to-many relationship can be used.

I don't know how to fix it and i can't go further without it.

Upvotes: 1

Views: 146

Answers (1)

Aamir Rind
Aamir Rind

Reputation: 39699

You need to call note_form.save() before adding ManyToMany objects not after.

note_form.save()
for item in  note_form.disciple:
    note_form.disciple.add(item)

Upvotes: 1

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