问题

I'm new to Django and Django Rest here.

我是Django和Django Rest的新手。

I created 3 models (see below).

我创建了3个模型（如下所示）。

I'm able to create some easy and basic serializers for each of those models, but I would like to create a more complex serializer for the CustomUser models than returns for each user it's roles.

我能够为这些模型中的每一个创建一些简单和基本的序列化程序，但我想为CustomUser模型创建一个更复杂的序列化程序，以返回每个用户的角色。

I've read the "Serializer relations" section in the doc. It's still not very clear how to achieve it.

我已经阅读了文档中的“序列化器关系”部分。如何实现还不是很清楚。

In the examples they use 2 models relations, but if I'm not wrong, I have 3, making things more complicated for me to understand.

在示例中，他们使用了2个模型关系，但如果我没有理解错的话，我有3个模型，这让我更难理解。

Could someone give me some tips to do it?

有人能给我一些提示吗？

class CustomUser(AbstractUser):

class CustomUser(AbstractUser):

email = models.EmailField(unique=True)

email = models.EmailField(unique=True)

username = models.CharField(max_length=100)

username = models.CharField(max_length=100)

USERNAME_FIELD = 'email'

USERNAME_FIELD = 'email'

class Meta:

class Meta:

db_table = "MyUsers"

db_table = "MyUsers"

def str(self):

def str(self):

return self.email

return self.email

class Roles(models.Model):

class Roles(models.Model):

id = models.AutoField(primary_key=True)

id = models.AutoField(primary_key=True)

label = models.CharField(max_length=100, related_name="roles_label")

label = models.CharField(max_length=100, related_name="roles_label")

class Meta:

class Meta:

db_table = "roles"

db_table = "roles"

def str(self):

def str(self):

return self.label

return self.label

class RolesUsers(models.Model):

class RolesUsers(models.Model):

id_user = models.ForeignKey(CustomUser, related_name="id_user", on_delete=models.CASCADE)

id_user = models.ForeignKey(CustomUser, related_name="id_user", on_delete=models.CASCADE)

id_role = models.ForeignKey(Roles, related_name="id_role", on_delete=models.CASCADE)

id_role = models.ForeignKey(Roles, related_name="id_role", on_delete=models.CASCADE)

class Meta:

class Meta:

db_table = "roles_users"

db_table = "roles_users"

unique_together = (("id_user", "id_role"),)

unique_together = (("id_user", "id_role"),)

def str(self):

def str(self):

return '{}: {}'.format(self.id_role, self.id_user)

class CustomUser(AbstractUser):

    email = models.EmailField(unique=True)
    username = models.CharField(max_length=100)
    USERNAME_FIELD = 'email'

    class Meta:
        db_table = "MyUsers"
    def __str__(self):
        return self.email

class Roles(models.Model):
    id = models.AutoField(primary_key=True)
    label = models.CharField(max_length=100,related_name="roles_label")
    class Meta:
        db_table = "roles"
    def __str__(self):
        return self.label

class RolesUsers(models.Model):
    id_user = models.ForeignKey(CustomUser,related_name="id_user", on_delete=models.CASCADE)
    id_role = models.ForeignKey(Roles, related_name="id_role", on_delete=models.CASCADE)
    class Meta:
        db_table = "roles_users"
        unique_together = (("id_user", "id_role"),)
    def __str__(self):
        return '{}: {}'.format(self.id_role, self.id_user)

答案1

得分: 0

相关名称应具有有意义的名称

class RolesUsers(models.Model):
    user = models.ForeignKey(CustomUser, related_name="user_role", on_delete=models.CASCADE)
    role = models.ForeignKey(Roles, related_name="user_role", on_delete=models.CASCADE)
    class Meta:
        db_table = "roles_users"
        unique_together = (("user", "role"),)
    def __str__(self):
        return '{}: {}'.format(self.role, self.user)

你可以创建用户序列化器

class UserSerializer(serializers.ModelSerializer):
    class Meta:
        model = CustomUser
        fields = ('id', 'user_role', 'email', 'username')

class RolesUsers(models.Model):
    user = models.ForeignKey(CustomUser,related_name="user_role", on_delete=models.CASCADE)
    role = models.ForeignKey(Roles, related_name="user_role", on_delete=models.CASCADE)
    class Meta:
        db_table = "roles_users"
        unique_together = (("id_user", "id_role"),)
    def __str__(self):
        return '{}: {}'.format(self.id_role, self.id_user)

class UserSerializer(serializer.ModelSerializers):
   class Meta:
         model = CustomUser
         fields = ('id', 'user_role', 'email', 'username')