Django forms - adding request object into form for evaluation

forms.py

class ProjectUpdateForm(ModelForm):
    """
    Form for updating projects.
    """
    members = forms.ModelMultipleChoiceField(
        queryset=User.objects.all().order_by('username'), required=False)

    lead_user = forms.ModelChoiceField(
        queryset=User.objects.all().order_by('username'), required=False)

    def __init__(self, *args, **kwargs):
        request = kwargs.pop("request")
        super(ProjectUpdateForm, self).__init__(*args, **kwargs)

        if not request.user.is_superuser and \
            request.user.contact.organization.org_type != 'Owner':

            self.fields['organization'] = forms.ModelChoiceField(
                queryset=Organization.objects.filter(
                    id=request.user.contact.organization.id
                )
            )