How to use the request in a ModelForm in Django

Question

I would like to make a queryset where the current user is used as a filter in a ModelForm:

class BookSubmitForm(ModelForm):
    book = forms.ModelChoiceField         


        

Answer 1

Extending AdamKG answer to class based views - override the get_form_kwargs method:

class PassRequestToFormViewMixin:
    def get_form_kwargs(self):
        kwargs = super().get_form_kwargs()
        kwargs['request'] = self.request
        return kwargs

from django.views.generic.edit import CreateView
class BookSubmitCreateView(PassRequestToFormViewMixin, CreateView):
    form_class = BookSubmitForm
# same for EditView

and then in forms:

from django.forms import ModelForm
class BookSubmitForm(ModelForm):
    def __init__(self, *args, **kwargs):
        self.request = kwargs.pop("request")
        super().__init__(*args, **kwargs)
        ...