正在获取其他格式的序列化数据

Question

如何获得text/value之类的新格式的JSON：

[
{
"name": "doc2",
"directions": [

"mar", 
"qwe"

]
},
{
"name": "John",
"directions": [
"Surgery",
"qwe"
]
}
]

而不是：

[
{
"name": "doc2",
"directions": [
{
"name": "mar"
},
{
"name": "qwe"
}
]
},
{
"name": "John",
"directions": [
{
"name": "Surgery"
},
{
"name": "qwe"
}
]
}
]

以下是我的models.py和serializers.py模块：型号.py

class Directions(models.Model):
name = models.CharField(max_length=355)
def __str__(self):
return self.name

class Doctors(models.Model):
name = models.CharField(max_length=255)
directions = models.ManyToManyField(Directions)
def __str__(self):
return self.name

序列化程序.py

class DirectionsSerializer(serializers.ModelSerializer):
class Meta:
model = Directions
fields = ('name',)

class DoctorsSerializer(serializers.ModelSerializer):
directions = DirectionsSerializer(many=True)
class Meta:
model = Doctors
fields = ('name', 'directions')

Answer 1

实现此目的有两种选择：

1.使用Custom relational fields^{[drf docs]}

对于您的情况，我们可以定义一个关系字段，使用它的顺序、标题和持续时间将音轨序列化为自定义字符串表示：

class DirectionsSerializer(serializers.RelatedField):
def to_representation(self, value):
return value.name
class DoctorsSerializer(serializers.ModelSerializer):
directions = DirectionsSerializer(many=True)
class Meta:
model = Doctors
fields = ['name', 'directions']

然后，这个自定义字段将序列化为以下表示形式：

[
{
"name": "doc2",
"directions": [

"mar", 
"qwe"

]
},
{
"name": "John",
"directions": [
"Surgery",
"qwe"
]
}
]

2.使用StringRelatedField()^{[drf docs]}

CCD_ 6可以用于使用其CCD_ 7方法来表示关系的目标。

对于您的案例，以下序列化程序：

class DoctorsSerializer(serializers.ModelSerializer):
directions = serializers.StringRelatedField(many=True)
class Meta:
model = Doctors
fields = ['name', 'directions']

将序列化为以下表示形式：

[
{
"name": "doc2",
"directions": [

"mar", 
"qwe"

]
},
{
"name": "John",
"directions": [
"Surgery",
"qwe"
]
}
]

此字段为read_only。

自变量：

• many-如果应用于多对多关系，则应将此参数设置为True