创建追随者/追随者关系时的Django模型设计问题答案

【问题标题】：Django model designing problem when creating a follower / following relationship创建追随者/追随者关系时的Django模型设计问题
【发布时间】：2021-02-18 06:49:36
【问题描述】：

我正在尝试为我的应用程序创建一个关注系统，当我认为它有效时，我意识到当账户 a 开始关注账户 b 时，账户 b 也开始关注账户 a

我的模型：

from django.contrib.auth.models import AbstractUser
from django.db import models


class User(AbstractUser):
    followers = models.ManyToManyField('self', blank=True, related_name='followers')
    following = models.ManyToManyField('self', blank=True, related_name='following')

class Post(models.Model):
    author = models.ForeignKey(User, on_delete=models.CASCADE, related_name='p_author')
    body = models.TextField(max_length=500)
    time = models.TextField() #Added when creating object with the API
    likes = models.IntegerField(default=0)

    def serialize(self):
        return {
            'id': self.id,
            'author': self.author.username,
            'body': self.body,
            'time': self.time,
            'likes': self.likes
        }

class Comment(models.Model):
    post_commented = models.ForeignKey(Post, on_delete=models.CASCADE, related_name='c_post')
    author = models.ForeignKey(User, on_delete=models.CASCADE, related_name='c_author')
    body = models.TextField(max_length=500)
    time = models.TextField() #Added when creating object with the API
    likes = models.IntegerField(default=0)

处理跟随动作的视图（通过 JS fetch 调用）：

ef follow(request, profile_name):
    user_object = User.objects.get(username=profile_name)
    
    if request.method == 'PUT':
        print(request.user)
        data = json.loads(request.body)

        if data.get('follow') == True:
            followers_set = user_object.followers
            followers_set.add(request.user)
            user_object.save()
            return JsonResponse({'status': 'success'}, status=204)

我想我需要重组我的整个数据库和项目来修复这个错误，你建议我怎么做？

【问题讨论】：

标签： python django sqlite django-models

【解决方案1】：

只需在两个用户模型属性上添加symmetric=False 即可，Django 默认在多字段上具有对称关系，如here 所述

【讨论】：