Question

以下是我的模特。

class User(models.Model):
    name = models.CharField(max_length = 255)
    alias = models.CharField(max_length = 255)
    email = models.CharField(max_length = 255)
    password = models.CharField(max_length = 255)
    confirm_password = models.CharField(max_length = 255)
    birthday = models.DateTimeField(null=True)
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)
    friend = models.ManyToManyField('self')
    objects = UserManager()

以下作品可以添加朋友。

def add_friend(request, friend_id):
    new_friend = User.objects.get(id=friend_id)
    print(new_friend.name)
    current_user = User.objects.get(id=request.session['user_id'])
    print(current_user.name)
    current_user.friend.add(new_friend)
    current_user.save()
    new_friend.friend.add(current_user)
    return redirect('/friends/')

但是，我需要帮助从用户中删除朋友。以下是我尝试但它不起作用。当我检查sqllite时，朋友仍然附加到该用户。

def remove_friend(request, friend_id):
    remove_friend = User.objects.get(id=friend_id)
    print(remove_friend.name)
    current_user = User.objects.get(id=request.session['user_id'])
    print(current_user.name)
    current_user.friend.remove(remove_friend)
    current_user.save()
    remove_friend.friend.remove(current_user)
    return redirect('/friends/')

如何从自联接表中删除数据库中的朋友？

0 个答案: