在Django ManyToMany关系中声明添加对象的存在 [英] Asserting for presence of added objects in Django ManyToMany relation

问题描述

我有以下模型：

  class Station（models.Model）：
 name = models.CharField （max_length = 50）
 address = models.TextField（default =''）
 owner = models.ForeignKey（User，default =''）
 members = models.ManyToManyField（User，related_name ='members'）
  

现在以下代码之后：

  user1 = User.objects.create_user（username =username1，
 password =password1）
 user1.save（）
 user2 = User.objects.create_user（username =username2，
 password =password2）
 user2save（）
 user3 = User.objects.create_user（username =username3 ，
 password =password3）
 user3.save（）
 station = Station（name =somename，
 address =someaddress，
 owner = user1，
）
 station.save（）
 
 station.members.add（user2，user3）
  

我想声称添加的用户确实在那里作为站的成员

有人请告诉我如何

assert station.members == [user2，user3] 不飞。 station.members实际上是<站：站对象> .members 。

解决方案>

station.members 是一个经理，即它是相关用户查询的访问者。您需要实际执行一个查询：在这种情况下， station.members.all（）。

I have the following model;

class Station(models.Model):
    name = models.CharField(max_length=50)
    address = models.TextField(default='')
    owner = models.ForeignKey(User,default='')
    members = models.ManyToManyField(User, related_name='members')        

Now after the following code;

user1 = User.objects.create_user(username="username1",
                                     password="password1")
user1.save()
user2 = User.objects.create_user(username="username2",
                                     password="password2")
user2.save()
user3 = User.objects.create_user(username="username3",
                                     password="password3")
user3.save()
station = Station(name="somename",                            
                  address="someaddress",
                  owner=user1,
)
station.save()

station.members.add(user2,user3)

I want to assert that the added users are indeed there as the "members" of "Station"

Someone please tell me how

assert station.members == [user2,user3] doesn't fly. station.members actually is <Station: Station object>.members instead.

解决方案

station.members is a Manager, i.e. it is the accessor for queries on the related users. You need to actually perform a query: in this case, station.members.all().

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