Django表單字段不會顯示在我的模板中

Question

表單字段不會顯示在瀏覽器中。只有提交按鈕出現。

views.py代碼：

def vote(request, pk): 
    # check if request is post 
    if request.method == 'POST': 
     # create a form and populate it with data from request 
     form = forms.Vote(request.POST) 
     if form.is_valid(): 
      fact = Fact.objects.get(pk=pk) 
      fact.votes += int(form.cleaned_data['vote']) 
      fact.save() 
      return HttpResponseRedirect(reverse(
       'facts:detail', 
       args=(pk,) 
      )) 
    else: 
     form = forms.Vote() 
    return render(request, 'facts/fact_detail.html', {'form': form}) 

模板（fact_detail.html）代碼：

<form method='POST'> 
    {% csrf_token %} 
    {{ form }} 
    <input type="submit" value="vote" /> 
</form> 

Form類（forms.py）代碼：

VOTE_CHOICES = [ 
    (1, 'upvote'), 
    (0, 'downvote') 
] 


class Vote(forms.Form): 
    vote = forms.ChoiceField(choices=VOTE_CHOICES, widget=forms.RadioSelect()) 

Answer 1

在views.py爲投票方法初始化形式變量本地，然後將它作爲參數傳遞。

def vote(request, pk): 
    form="" 
    //rest of the code// 
     return render(request, 'facts/fact_detail.html', {'form': form}) 

Answer 2

我建議檢查從Django文檔通用編輯的觀點，我認爲它有解決方案 [https://docs.djangoproject.com/en/1.11/ref/class-based-views/generic-editing/#createview][1]