Django: выпадающий список, где элементы этого списка взяты из модели

class GetDocumentForm(forms.Form):
    document          = forms.ChoiceField()
 
    def __init__(self, *args, **kwargs):
        super(GetDocumentForm, self).__init__(*args, **kwargs)
 
        for doc in Document.objects.all().order_by('docfile'):
            self.fields['document'].choices.append((doc.id, doc.docfile.name))

class SearchEngineForm(forms.Form):
 
    person = forms.ChoiceField()
 
    def __init__(self, *args, **kwargs):
        super(SearchEngineForm, self).__init__(*args, **kwargs)
        people = Person.objects.all().order_by('slug')
        for person in people:
            self.fields['person'].choices.append((str(person.id), str(person)))

from django.views.generic import View
from .forms import SearchEngineForm
 
class SearchEngineView(View):
    def get(self, request):
        prepared_form = SearchEngineForm()   
        return render(request, "general/search_engine.html", {"form": prepared_form}) # Breakpoint

"prepared_form" SearchEngineForm: <tr><th><label for="id_person">Person:</label></th><td><select id="id_person" name="person">\n</select></td></tr> 
    \
    fields  OrderedDict: OrderedDict([('person', <django.forms.fields.ChoiceField object at 0x7ff8dab502e8>)])
      \
      'person' (140707054337416)    ChoiceField: <django.forms.fields.ChoiceField object at 0x7ff8dab502e8> 
         \
      choices   <class 'list'>: [('2', 'Johnson John (1976)'), ('1', 'Smith Adam (1800)')]

class SearchEngineForm(forms.Form):
    person = forms.ChoiceField()
 
    def __init__(self, *args, **kwargs):
        super(SearchEngineForm, self).__init__(*args, **kwargs)
        people = Person.objects.all().order_by('slug')
        for person in people:
            self.fields['person'].widget.choices.append((str(person.id), str(person)))