在序列化器休息框架中序列化连接表
Serializing joined tables in serializers rest framework
所以我正在尝试使用 Django 序列化程序序列化多个连接表。我找不到办法做到这一点。正在执行的查询是原始的 sql。
型号如下
class UserDetail(models.Model):
user = models.OneToOneField(User, on_delete = models.CASCADE)
mobile_number = models.IntegerField()
national_id = models.CharField(max_length = 30)
date_created = models.DateTimeField(auto_now_add = True)
address = models.CharField(max_length = 250)
merchant_name = models.CharField(null = True, max_length = 30)
class Account(models.Model):
user = models.OneToOneField(User, on_delete = models.CASCADE)
account_number = models.BigIntegerField()
balance = models.FloatField()
account_type = models.ForeignKey(AccountType, on_delete = models.CASCADE)
预期结果的json应该如下
{
"userdetail": {
"mobile_number":""
},
"account": {
"account_number":""
},
"user": {
"first_name": "",
"last_name": "",
"email":""
}
}
原始 sql 查询如下
queryset = Account.objects.raw('''SELECT auth_user.first_name,
auth_user.id,
auth_user.last_name,
auth_user.email,
authentication_userdetail.mobile_number,
authentication_account.account_number
FROM
public.auth_user,
public.authentication_account,
public.authentication_userdetail
WHERE
auth_user.id = authentication_userdetail.user_id
AND
auth_user.id = authentication_account.user_id
''')
如果有不使用原始 sql 的替代方法,我将不胜感激,因为我不喜欢使用 django ORM
执行原始 sql 查询
尝试使用此解决方案,但我似乎无法理解查询集的序列化方式
Cross-table serialization Django REST Framework
已编辑
class UserDetailSerializer(serializers.ModelSerializer):
class Meta:
model = UserDetail
fields = ('mobile_number',)
class AccountSerializer(serializers.ModelSerializer):
class Meta:
model = Account
fields = ('account_number',)
class AccountInfoSerializer(serializers.ModelSerializer):
user_detail = UserDetailSerializer()
account = AccountSerializer()
user = serializers.SerializerMethodField()
class Meta:
model = User
fields = ('user_detail', 'account', 'user')
def get_user(self, obj):
return {
'first_name': 'obj.first_name',
'last_name': 'obj.last_name',
'email': 'obj.email',
}
视图代码
serializer_class = AccountInfoSerializer
def get_queryset(self, *args, ** kwargs):
user_id = self.request.query_params.get('user_id', None)
queryset = None
if user_id is not '':
queryset = UserDetail.objects.raw()
return queryset
你可以尝试这样的解决方案:
from rest_framework import serializers
class UserDetailSerializer(serializers.ModelSerializer):
class Meta:
model = UserDetail
fields = ('mobile_number',)
class AccountSerializer(serializers.ModelSerializer):
class Meta:
model = Account
fields = ('account_number',)
class UserSerializer(serializers.ModelSerializer):
userdetail = UserDetailSerializer()
account = AccountSerializer()
user = serializers.SerializerMethodField()
class Meta:
model = User
fields = ('userdetail', 'account', 'user')
def get_user(self, obj):
return {
'first_name': 'obj.first_name',
'last_name': 'obj.last_name',
'email': 'obj.email',
}
所以我正在尝试使用 Django 序列化程序序列化多个连接表。我找不到办法做到这一点。正在执行的查询是原始的 sql。 型号如下
class UserDetail(models.Model):
user = models.OneToOneField(User, on_delete = models.CASCADE)
mobile_number = models.IntegerField()
national_id = models.CharField(max_length = 30)
date_created = models.DateTimeField(auto_now_add = True)
address = models.CharField(max_length = 250)
merchant_name = models.CharField(null = True, max_length = 30)
class Account(models.Model):
user = models.OneToOneField(User, on_delete = models.CASCADE)
account_number = models.BigIntegerField()
balance = models.FloatField()
account_type = models.ForeignKey(AccountType, on_delete = models.CASCADE)
预期结果的json应该如下
{
"userdetail": {
"mobile_number":""
},
"account": {
"account_number":""
},
"user": {
"first_name": "",
"last_name": "",
"email":""
}
}
原始 sql 查询如下
queryset = Account.objects.raw('''SELECT auth_user.first_name,
auth_user.id,
auth_user.last_name,
auth_user.email,
authentication_userdetail.mobile_number,
authentication_account.account_number
FROM
public.auth_user,
public.authentication_account,
public.authentication_userdetail
WHERE
auth_user.id = authentication_userdetail.user_id
AND
auth_user.id = authentication_account.user_id
''')
如果有不使用原始 sql 的替代方法,我将不胜感激,因为我不喜欢使用 django ORM
执行原始 sql 查询尝试使用此解决方案,但我似乎无法理解查询集的序列化方式 Cross-table serialization Django REST Framework
已编辑
class UserDetailSerializer(serializers.ModelSerializer):
class Meta:
model = UserDetail
fields = ('mobile_number',)
class AccountSerializer(serializers.ModelSerializer):
class Meta:
model = Account
fields = ('account_number',)
class AccountInfoSerializer(serializers.ModelSerializer):
user_detail = UserDetailSerializer()
account = AccountSerializer()
user = serializers.SerializerMethodField()
class Meta:
model = User
fields = ('user_detail', 'account', 'user')
def get_user(self, obj):
return {
'first_name': 'obj.first_name',
'last_name': 'obj.last_name',
'email': 'obj.email',
}
视图代码
serializer_class = AccountInfoSerializer
def get_queryset(self, *args, ** kwargs):
user_id = self.request.query_params.get('user_id', None)
queryset = None
if user_id is not '':
queryset = UserDetail.objects.raw()
return queryset
你可以尝试这样的解决方案:
from rest_framework import serializers
class UserDetailSerializer(serializers.ModelSerializer):
class Meta:
model = UserDetail
fields = ('mobile_number',)
class AccountSerializer(serializers.ModelSerializer):
class Meta:
model = Account
fields = ('account_number',)
class UserSerializer(serializers.ModelSerializer):
userdetail = UserDetailSerializer()
account = AccountSerializer()
user = serializers.SerializerMethodField()
class Meta:
model = User
fields = ('userdetail', 'account', 'user')
def get_user(self, obj):
return {
'first_name': 'obj.first_name',
'last_name': 'obj.last_name',
'email': 'obj.email',
}