[英]Django ManyToMany Through Relationship
I have a following criteria 我有以下标准
where I have User Model, which itself extended was from Django user model. 我有用户模型,该模型本身是从Django用户模型扩展而来的。
Class User
name = models.CharField()
...
A user can become a seller when he is approved by the admin. 用户在获得管理员批准后可以成为卖方。 Seller model goes like this.
卖方模型是这样的。
Class Seller
location = models.CharField()
INDIVIDUAL = '1'
COMPANY = '2'
ACCOUNT_CHOICES = (
(INDIVIDUAL, 'individual'),
(COMPANY, 'company'),
)
account_type_name = models.CharField(max_length=2,choices=ACCOUNT_CHOICES, default=INDIVIDUAL)
And Seller can belong to any of the second or third level categories 卖方可以属于任何第二或第三级类别
Class Level1Category
name = models.CharField()
Class Level2Category
name = models.CharField()
level1 = models.ForeignKey(Level1Category)
Class Level3Category
name = models.CharField()
level2 = models.ForeignKey(Level2Category)
When a user apply for seller account he has to select any one of the level 2 or level 3 category. 用户申请卖方帐户时,他必须选择2级或3级类别中的任何一个。 Which would be the efficient model architecture for this.
这将是有效的模型架构。 How can I link the category model with the seller and also link these two models with the user.
如何将类别模型与卖方链接,以及如何将这两个模型与用户链接。
EDIT 编辑
My User Model is already a extended version of Django User Model. 我的用户模型已经是Django用户模型的扩展版本。 I'm doing that because I have two different type of profiles, one is seller and the other is buyer.
我这样做是因为我有两种不同类型的配置文件,一种是卖方,另一种是买方。
I would suggest you try by extending Django's User model ( see docs ) 我建议您尝试通过扩展Django的用户模型来尝试( 请参阅docs )
Your seller would extend from your User model: 您的卖方将从您的用户模型扩展:
class User(models.Model):
name = models.CharField()
....
class Seller(models.Model):
user = models.OneToOneField(User, on_delete=models.CASCADE)
location = models.CharField()
...
You could create a ManyToMany relationship for your categories ( see docs ): 您可以为您的类别创建ManyToMany关系( 请参阅docs ):
class Category(models.Model):
name = models.CharField()
user = models.ForeignKey(User, on_delete=models.CASCADE)
...
Or one thing that come to mind, you maybe could extend what you have done for your account_type_name: 或想到的一件事,您可能可以扩展为account_type_name做的事情:
LEVEL_CATEGORY = (
(1, 'Level 1'),
(2, 'Level 2'),
(3, 'Level 2'),
)
level_category = models.CharField(choices=LEVEL_CATEGORY, default=1)
But I am not sure if this is really what you want to do. 但是我不确定这是否真的是您想要的。
If you need just basic user field such as; 如果只需要基本的用户字段,例如; name, email etc, you can extend Django's User model as @HendrikF suggest then;
名称,电子邮件等,您可以按照@HendrikF的建议扩展Django的用户模型;
class Seller(models.Model):
user = models.OneToOneField(User, on_delete=models.CASCADE)
location = models.CharField()
...
if you need customize User model I do suggest you Django AbstractUser for example; 如果您需要自定义用户模型,我建议您例如使用Django AbstractUser。
from django.contrib.auth.models import AbstractUser
class User(AbstractUser):
consumer = models.ForeignKey('Consumer', null=True, blank=True)
...
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