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我有以下型號:Django的1.11:無法獲取ManyToManyField工作
class Address(models.Model):
address1 = models.CharField(max_length=150, null=True)
address2 = models.CharField(max_length=150, null=True, blank=True)
city = models.CharField(max_length=50, null=True)
state_province = models.CharField(max_length=50, null=True)
zipcode = models.CharField(max_length=10, null=True)
country = models.CharField(max_length=3, default='USA', null=False)
created_at = models.DateTimeField(db_index=True, auto_now_add=True)
updated_at = models.DateTimeField(db_index=True, auto_now=True)
class Meta:
db_table = 'addresses'
,這一個.....
class User(models.Model, AbstractBaseUser, PermissionsMixin):
email = models.EmailField(db_index=True, max_length=150, unique=True,
null=False)
first_name = models.CharField(max_length=45, null=False)
last_name = models.CharField(max_length=45, null=False)
mobile_phone = models.CharField(max_length=12, null=True)
profile_image = models.CharField(max_length=150, null=True)
is_staff = models.BooleanField(db_index=True, null=False, default=False)
is_active = models.BooleanField(
_('active'),
default=True,
db_index=True,
help_text=_(
'Designates whether this user should be treated as active. '
'Unselect this instead of deleting accounts.'
),
)
addresses = models.ManyToManyField(Address),
USERNAME_FIELD = 'email'
objects = MyCustomUserManager()
def __str__(self):
return self.email
def get_full_name(self):
return self.email
def get_short_name(self):
return self.email
class Meta:
db_table = 'users'
我的第一個謎團是,通過遷移模型,users表中沒有「addresses」字段,也沒有數據庫中的數據透視表來保持多個關係。 ManyToMany有效載荷如何保存?
其次,我的目標是爲用戶提供多個地址。我希望用戶擁有多個「地址」(而不是每個地址都有一個用戶),因爲其他模型也可以擁有地址。我不希望地址模型與ForeignKeys有12個不同的「所有者」字段。
所以。我試試這個:
from myApp.models import User
from myApp.models import Address
user = User(email="[email protected]", first_name="john", last_name="doe", mobile_phone="444")
# the model permits partial address fields, don't worry about that.
address = Address(city="New York", zipcode="10014")
現在,我嘗試了address
添加到user.addresses
,我得到一個錯誤。
user.addresses.add(address)
---------------------------------------------------------------------------
AttributeError Traceback (most recent call last)
<ipython-input-5-0337af6b1cd4> in <module>()
----> 1 user.addresses.add(address)
AttributeError: 'tuple' object has no attribute 'add'
幫助?
我不能相信我錯過了。謝謝!那就是訣竅。 – JasonGenX