Question

作为Django文档中轮询应用程序教程的扩展，我正在创建用户个人资料，我想获取特定用户对每个问题的回答并将其存储在数据库中，并能够列出对以下问题的所有回答用户在用户登录时回答所有问题。以及所有用户对问题的所有答复。本教程创建了两个模型：Question和Choice。（Choice的Question为ForeignKey）。但是，如何将特定用户选择的特定问题的选择附加到该同一用户？

这是我的模特。py

from django.db import models

import datetime
from django.utils import timezone

from django.contrib.auth.models import User

# Create your models here.
class Question(models.Model):
    uzers = models.ManyToManyField(User)
    question_text = models.CharField(max_length=100)
    pub_date = models.DateTimeField('date published')

    def __str__(self):
        return self.question_text

    def published_recently(self):
        return self.pub_date > timezone.now()


class Choice(models.Model):
    question = models.ForeignKey(Question, on_delete = models.CASCADE)
    choice_text = models.CharField(max_length=200)
    votes = models.IntegerField(default=0)

    def __str__(self):
        return self.choice_text

class Response(models.Model):
    uzer = models.ForeignKey(User, on_delete = models.CASCADE)
    question = models.ForeignKey(Question, on_delete= models.CASCADE)
    response = models.ForeignKey(Choice, on_delete = models.CASCADE)

    def __str__(self):
        return self.uzer + self.question + self.response



datetime.timedelta(days=1)

views.py：

from .models import Choice, Question, Response

from django.contrib.auth.models import User


def vote(request, question_id):
    question = get_object_or_404(Question, pk=question_id)
    try:
        selected_choice = question.choice_set.get(pk=request.POST['choice'])
    except (KeyError, Choice.DoesNotExist):
        # Redisplay the question voting form.
        return render(request, 'polls/detail.html', {
            'question': question,
            'error_message': "You didn't select a choice.",
        })
    else:

        selected_choice.votes += 1
        q = selected_choice.question
        c = selected_choice
        r= Response(uzer=User, question = q,response =c )
        r.save()

        #User.response_set(question = selected_choice.question, response = selected_choice )
        selected_choice.save()
        User.save()


        return HttpResponseRedirect(reverse('polls:results', args=(question.id,)))

我也尝试过： User.response_set.create（问题= q，响应= c）还尝试用“添加”替换“创建”。没用。

Django外键query_set通过Views.py更新

0 个答案: