Ingredient ModelForm (Django)

forms.py

from django import forms
from menu.models import Ingredient, Diet, FoodPreference

class IngredientForm (forms.ModelForm):
    class Meta:
        model = Ingredient
        exclude = ["franchise"]

    def __init__ (self, *args, **kwargs):
        brand = kwargs.pop("brand")
        super(IngredientForm, self).__init__(*args, **kwargs)
        self.fields["diets"].widget = forms.widgets.CheckboxSelectMultiple()
        self.fields["diets"].help_text = ""
        self.fields["diets"].queryset = Diet.objects.all()
        self.fields["preferences"].widget = forms.widgets.CheckboxSelectMultiple()
        self.fields["preferences"].help_text = ""
        self.fields["preferences"].queryset = FoodPreference.objects.filter(franchise=brand)