将参数从 django updateview 发送到 model 表单

Question

in function based view it's easy to pass parameters to form instances as form = FormName(user_id=..) and do other staffs, but I'm wondering how to do this in django update view It's my view

class MedicalrecordUpdate(UpdateView):
    model = MedicalRecords
    form_class = EditMedicalRecord
    success_url = "."
    template_name = "medicalrecord/edit_medicalrecord.html"
 
    # ?? no idea how to pass user id to EditMedicalRecord form

forms.py

class EditMedicalRecord(forms.ModelForm):
    def __init__(self, *args, **kwargs):
        user_id = kwargs.pop("user_id")
        super(EditMedicalRecord, self).__init__(*args, **kwargs)
        ...
    ...

Answer 1

You need to override get_form_kwargs :

class MedicalrecordUpdate(UpdateView):
    model = MedicalRecords
    form_class = EditMedicalRecord
    success_url = "."
    template_name = "medicalrecord/edit_medicalrecord.html"
    
    def get_form_kwargs(self):
        kwargs = super().get_form_kwargs()
        kwargs.update({'user_id': self.kwargs.get('user_id')}) # self.kwargs is the kwargs passed to the view
        return kwargs