Django多对多相关名称

Question

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                    <td style="width:20px;text-align:left; "> 
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                    <td  style="width:70px;text-align:left;">
                                    <input type="text" name="lname">
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当我输入class Profile(models.Model): user = models.OneToOneField(User) followers = models.ManyToManyField(User, related_name='is_following', blank=True) activation_key = models.CharField(max_length=120, blank=True, null=True) activated = models.BooleanField(default=False) timestamp = models.DateTimeField(auto_now_add=True) updated = models.DateTimeField(auto_now=True) objects = ProfileManager() def __str__(self): return self.user.username 时，在shell中输入

，当我输入User.profile.followers.all()时，我会收到不同的结果。

Answer 1

首先，我要改变：

followers = models.ManyToManyField(User

到

followers = models.ManyToManyField(Profile

然后，如果您尝试打印

 user1 = Profile.objects.create() #missing args but you don't need it for the example
 user2 = Profile.objects.create()
 user1.followers.add(user2)
 user1.followers.all() 

你会得到：

[user2]

但如果你这样做

 user1.is_following.all() 

你会得到：

[]

最后，如果你这样做：

user2.is_following.all() 

结果将是：

[user1]

related_name允许您将对象放在另一个对象中。