在django中創建OneToMany模型

Question

我想在django中創建一個到多個模型。 例如我有

class UserProfile(models.Model): 
    user = models.OneToOneField(User) 
    mobile = 1 #I want OneToMany 
    website = models.URLField() 

class Mobile(models.Model): 
    phone_number = models.CharField(min_length=7, max_length=20) 
    description = models.CharField(min_length=7, max_length=20) 

我該怎麼做這項工作？

Answer 1

django中有ForeignKey用於這種關係。

class UserProfile(models.Model): 
    user = models.OneToOneField(User) 
    website = models.URLField() 


class Mobile(models.Model): 
    phone_number = models.CharField(min_length = 7, max_length = 20) 
    description = models.CharField(min_length = 7, max_length = 20) 
    user_profile = models.ForeignKey(UserProfile) 

一旦你有了這一點，UserProfile對象可以有它可以通過userprof_obj.mobile_set這是一個RelationshipManager訪問的多個手機號碼。要獲取所有手機號碼，您可以執行userprof_obj.mobile_set.all()。

Answer 2

爲什麼你不希望使用多到一的關係

class Mobile(models.Model): 
    user = models.ForeignKey(UserProfile) 
    phone_number = models.CharField(min_length=7, max_length=20) 
    description = models.CharField(min_length=7, max_length=20)