如何将HTTP POST数据绑定到Django Rest Framework中的python对象？ [英] how to bind HTTP POST data to python object in Django Rest Framework?
问题描述
我将举个例子来更好地解释我的问题
I will give an example to better explain my question
我的请求：
POST
http：// localhost：8080 / users /
请求正文：（发布）
{"name":"Matt",
"salary":10000,
"blog_url":"www.myblog.com",
"dept_name":"ENG"
}
class CustomRequest(object):
def __init__(self,name,salary,blog_url,dept_name):
self.name=name
self.salary=10000
self.blog_url=blog_url
self.dept_name=dept_name
models.py
models.py
class myUser(models.Model):
//fields -- username, salary
class myUserProfile(models.Model):
User=models.OneToOneField(user)
blog_url=models.URLfield()
dept_name=models.ForeignKey(Department)
@apiview(['POST'])
def createUser(customrequest):
myuser=user(customrequest.name, customrequest.salary)
myuser.save()
myuser.userprofile.blog_url(customrequest.blog_url)
myuser.userprofile.dept_name(customrequest.dept_name)
myuser.save()
我使用Java JAX-RS API大部分REST服务。在此框架中，
POST请求体自动反序列化为方法所接收的对象（在上例中，它是customrequest）。开发人员可以使用POST请求中寻找的属性定义一个对象，然后执行业务逻辑。
I have been most of REST services using Java JAX-RS API. In this framework, POST request body is automatically deserialized to the object that the method takes in( in the above example, it is customrequest). A developer can define an object with attributes that he is looking for in the POST request and then perform the business logic.
现在我们正在考虑迁移到Django，我想知道Django Rest Framework是否提供了这种类型的行为。如果是这样，我该怎么办？
请注意，在JAX-RS世界中，开发人员无需编写序列化程序。所有需要的是传入的JSON被分配到的传输对象。
Now that we are thinking of migrating to Django, I am wondering if Django Rest Framework provides this kind of behavior out of box. If so, how would I do that? Please note, in the JAX-RS world, there is no need for a developer to write a serializer. All that is needed is the transfer object where the incoming JSON gets deserailzed into.
我假设在Django中，需要一个串行器和一个传输对象来达到相同的目的
I assume in Django, both a serializer and a transfer object is needed to achieve the same purpose.
推荐答案
在DRF中有两个选项：
In DRF, you have two options:
- 您可以使用ModelSerializer，并自动获取模型实例
- ，或者使用Serializer，并获得validated_data并执行任何您喜欢的操作
序列化程序与您所说的传输对象相同，就是在定义数据的意义上结构，并且两者都将保存反序列化的值。
The serializer is the same as what you call transfer object, in the sense that both define the data structure and that both will hold the deserialized values.
对于模型，它是持久性所必需的，但JAX-RS中也是必需的，除非您使用相同的类作为ORM实体（这是一个坏的设计）。所以在JAX-RS中你会有，例如，CustomRequest和JPA CustomRequestEntity
For models, it is required for persistence, but that is also required in JAX-RS, unless you use the same classes as ORM entities(which is a bad design). So in JAX-RS you will have, for example, CustomRequest and JPA CustomRequestEntity
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