django 복잡한 formset 문제

Question

나는 3 개의 기본 모델을 가지고있다. 설문지 모델 또는 질문 집합에는 일련의 질문이 포함되어 있습니다. 모든 사용자 응답은 응답으로 저장됩니다.

이제 설문지 세트의 모든 질문에 대한 답변을 저장할 formset을 생성해야합니다. 어떻게 장고에서 할 수 있습니다. 지금까지 나는 주어진 설문지에서 단 하나의 질문을 한꺼번에 표시하고 응답을 저장함으로써 그것을 수행해야했습니다. 내 문제는 questiontype에 따라 두 개의 다른 modelform (MultipleChoiceAnswerForm, DescriptiveChoiceAnswerForm)을 사용하고 폼 유형에 따라 유효성을 검사한다는 것입니다. 어떻게 formset에서 사용할 수 있습니까?

저는 초보자입니다. 어떤 도움도 받으실 수 있습니다.

내 코드 :

#Models.py 

class Question(models.Model): 
    statement = models.CharField(max_length=255) 
    question_type = models.CharField(max_length=20, choices=get_qtypes()) 
    remarks = models.CharField(max_length=200, null=True, blank=True) 

    def __unicode__(self): 
     return '%s'%(self.statement) 

class Questionnaire(models.Model): 
    title = models.CharField(max_length=255) 
    questionaire_type = models.CharField(max_length=20,choices=QUESTIONNAIRETYPE) 
    context = models.ForeignKey(QuestionContext) 
    questions = models.ManyToManyField(Question) 

    timestamp = models.DateTimeField(auto_now=True) 
    tathya_user = models.ForeignKey(User) 

    def __unicode__(self): 
     return '%s'%(self.title) 

class Answer(models.Model): 
    question = models.ForeignKey(Question) 
    person = models.ForeignKey(Person) 
    course = models.ForeignKey(Course) 
    teacher=models.ForeignKey(Person, null=True, blank=True, default = None) 
    questionaire = models.ForeignKey(Questionnaire) 
    statement = models.CharField(max_length=255) 


    def get_label(self): 
     return '%s'%(self.question.statement) 
    def get_choices(self): 
     return get_questionchoices(self.question.question_type) 

class DescriptiveAnswerForm(ModelForm): 
    def __init__(self, *args, **kwargs): 
     super(DescriptiveAnswerForm, self).__init__(*args, **kwargs) 
     if kwargs.has_key('instance'): 
      self.fields['statement'].label = kwargs['instance'].get_label() 

    statement = forms.CharField(widget=forms.Textarea()) 
    class Meta: 
     model = Answer 
     exclude=('question','person','course','teacher','questionaire') 

class MultipleChoiceAnswerForm(ModelForm): 
    statement = forms.ChoiceField(widget=forms.RadioSelect(choices=EMPTY,attrs={'class': 'allradio',})) 

    def __init__(self, *args, **kwargs): 
     super(MultipleChoiceAnswerForm, self).__init__(*args, **kwargs) 
     if kwargs.has_key('instance'): 
      self.fields['statement'].label = kwargs['instance'].get_label() 
      self.fields['statement'].choices = kwargs['instance'].get_choices() 

    class Meta: 
     model = Answer 
     exclude=('question','person','course','teacher','questionaire') 

################################################################### 
#view.py 
@login_required 
def content_feedback_view_old(request,course_code): 
    #do validation and other jobs 
    questionnaire = get_questionnaire(some_params_like_coursecode) 
    if request.method == 'POST': 
     r_answer = Answer() 
     r_answer.question = Question.objects.get(id=request.session['question']) 
     r_answer.person = student 
     r_answer.course = course 
     r_answer.questionaire = questionnaire 
     r_answer.tathya_user = User.objects.get(id=request.user.pk) 
     rformtype = request.POST['formtype'] 
     if rformtype == 'MCQ': 
      rform = MultipleChoiceAnswerForm(request.POST, instance=r_answer) 
     else: 
      rform = DescriptiveAnswerForm(request.POST, instance=r_answer) 
     if rform.is_valid(): 
      rform.save() 
     else: 
      #return HttpResponse(printerror("Some problem occurred!")) 
      errortext = "You need to provide an input!" 

    questions = questionnaire.questions.all() 
    allquestions = questions.count() 
    tot_q = 0 
    formtype = "" 
    answered = 0 
    for question in questions: 
     try: 
      answer=Answer.objects.get(question=question,person=student,course=course,questionaire=questionnaire) 
      answered += 1 
     except: 
      answer = Answer() 
      answer.question = question 
      answer.person = student 
      answer.course = course 
      answer.questionaire = questionnaire 
      answer.tathya_user = User.objects.get(id=request.user.pk) 
      request.session['question']=question.id 
      tot_q = tot_q + 1; 
      if get_questiontype(question.question_type)=='MCQ': 
       formtype="MCQ" 
       form=MultipleChoiceAnswerForm(instance=answer) 
      else: 
       formtype="DESC" 
       form=DescriptiveAnswerForm(instance=answer) 
      break 
    if tot_q>0: 
     data_dict['FeedbackFormType']=formtype 
     data_dict['FeedbackForm']=form 
     data_dict['pagetitle']=context.description 
     data_dict['coursecode']=course.course_code 
     data_dict['feedbacktitle']="Content Feedback for "+course.fullname 
     data_dict['Completeness'] = (answered/allquestions)*100 
     data_dict['error']=errortext 
    else: 
     return HttpResponse(printerror("Thanks! You've answered all the questions!<br><a href=\"/feedback/teachers/"+course.course_code+"\">Continue with the teaching feedback.</a>")) 
    req_context = RequestContext(request) 
    return render_to_response('view.html', data_dict, req_context) 

Answer 1

간단한 답 : 단지 즉, 그것은 사용해야 하나의 AnswerForm에 사용하고 어떤 종류의 필드로 관리 할 수 ​​있도록하고 위젯 : 보조 노트로

class AnswerForm(ModelForm): 
    def __init__(self, *args, **kwargs): 
     super(AnswerForm, self).__init__(*args, **kwargs) 
     instance = self.instance 
     if instance.question.question_type == 'MCQ': 
      self.fields["statement"] = forms.ChoiceField(
       choices=instance.get_choices(), 
       widget=forms.RadioSelect(attrs={'class': 'allradio',}) 
       ) 
     else: 
      self.fields["statement"] = forms.CharField(
       widget=forms.Textarea() 
       ) 
     self.fields['statement'].label = instance.get_label() 

    class Meta: 
     model = Answer 
     exclude=('question','person','course','teacher','questionaire') 

, 모델의 속성 값을 모델의 생성자에 전달할 수 있습니다.

answer = Answer(
     question=Question.objects.get(id=request.session['question']), 
     person=student, 
     course=course, 
     questionnaire=questionnaire, 
     # User.objects.get(id=request.user.pk) will return request.user 
     # so it's just useless - just use request.user 
     tathya_user=request.user 
     )