如何在 django rest 框架中获取与外键相关的数据?
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【中文标题】如何在 django rest 框架中获取与外键相关的数据?【英文标题】:How to get data related to a foreign key in django rest framework? 【发布时间】:2017-08-19 21:28:43 【问题描述】:我要为一个活动创建一个约会,我的模型如下-
事件/models.py
class Event(models.Model):
id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
event_name = models.CharField(max_length=200)
event_location = models.CharField(max_length=200, default='')
约会/models.py
class Appointment(models.Model):
id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
event = models.ForeignKey(Event, on_delete=models.CASCADE)
appointment_date = models.DateTimeField(default=datetime.datetime.now)
约会序列化器是 -
约会/序列化器.py
class AppointmentSerializer(serializers.ModelSerializer):
class Meta:
model = Appointment
fields = ('id', 'event', 'appointment_date')
我可以按如下方式创建约会 -
POST appointment
request params -
event:6625dc74-dc36-4a22-9fac-c63e96fe6049
appointment_date:2017-06-26 18:30:00
response
"id": "08c975bc-c4d8-4e90-a4b2-bdb2cd69e9e8",
"event": "6625dc74-dc36-4a22-9fac-c63e96fe6049",
"appointment_date": "2017-06-26 18:30:00"
但我需要事件作为事件对象,而不是事件 id 字符串,比如 -
[
"id": "08c975bc-c4d8-4e90-a4b2-bdb2cd69e9e8",
"event":
"id": "6625dc74-dc36-4a22-9fac-c63e96fe6049",
"event_name": "Test Event",
"event_location": "TVM, IND"
,
"appointment_date": "2017-06-26 18:30:00"
]
【问题讨论】:
How do I include related model fields using Django Rest Framework?的可能重复 这已记录在DRF docs - Serializer relations 【参考方案1】:在您的序列化程序类中定义depth=1
所以你的序列化器将是:
class AppointmentSerializer(serializers.ModelSerializer):
class Meta:
model = Appointment
fields = ('id', 'event', 'appointment_date')
depth = 1
【讨论】:
感谢您的回复。在添加深度 = 1 时,POST 数据中缺少事件。请注意,我将事件 ID 作为 POST 参数传递。即,事件:6625dc74-dc36-4a22-9fac-c63e96fe6049以上是关于如何在 django rest 框架中获取与外键相关的数据?的主要内容,如果未能解决你的问题,请参考以下文章
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