Django Passing Custom Form Parameters to ModelFormset

django, django-forms, filtering

Solution

I think you want to make some changes to your custom factory function. It should return the formset class, not the form. How about this:

def make_vote_formset(game_obj, extra=0):
    class _VoteForm(forms.ModelForm):
        score = forms.ModelChoiceField(
            queryset=Odds.objects.filter(game=game_obj), 
            widget=forms.RadioSelect(), 
            empty_label=None)

        class Meta:
            model = Vote
            exclude = ['user',]
    return modelformset_factory(Vote, form=_VoteForm, extra=extra)

Then in your view code:

current_game = Game.objects.filter(id=current_game_id)
VoteFormSet = make_vote_formset(current_game)
formset = VoteFormSet(
             request.POST, 
             queryset=Vote.objects.filter(game__round=round, user=user))

Problem

My problem is similar to Django Passing Custom Form Parameters to Formset Ive have these classes ``` class Game(models.Model): home_team = models.ForeignKey(Team, related_name='home_team') away_team = models.ForeignKey(Team, related_name='away_team') round = models.ForeignKey(Round) TEAM_CHOICES = ((1, '1'), (2, 'X'), (3, '2'),) class Odds(models.Model): game = models.ForeignKey(Game, unique=False) team = models.IntegerField(choices = TEAM_CHOICES) odds = models.FloatField() class Meta: verbose_name_plural = "Odds" unique_together = ( ("game", "team"), ) class Vote(models.Model): user = models.ForeignKey(User, unique=False) game = models.ForeignKey(Game) score = models.ForeignKey(Odds) class Meta: unique_together = ( ("game", "user"),) ``` And I've defined my own modelformset_factory: ``` def mymodelformset_factory(ins): class VoteForm(forms.ModelForm): score = forms.ModelChoiceField(queryset=Odds.objects.filter(game=ins), widget=forms.RadioSelect(), empty_label=None) def __init__(self, *args, **kwargs): super(VoteForm, self).__init__(*args, **kwargs) class Meta: model = Vote exclude = ['user'] return VoteForm ``` And I use it like this: ``` VoteFormSet = modelformset_factory(Vote, form=mymodelformset_factory(v), extra=0) formset = VoteFormSet(request.POST, queryset=Vote.objects.filter(game__round=round, user=user)) ``` This displays the form: drop down box of Game(s) in the Round specified and is supposed to display 3 radio buttons for the Odds but I don't know what to pass as a parameter to the mymodelformset_factory.. If v = Game.objects.get(pk=1) it obviously only displays Game with pk=1 for ALL Games, What I need is v = Game.objects.get(pk="game who is connected to the odds regarding") if you catch my drift..

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