一.3.序列化使用之idc资源与api文档

 前后端分离,前端写前端的，后端写后端的，但是它们中间得有一个api文档

1.idc资源

(1)models.py:

from django.db import models

class Idc(models.Model):
    name =  models.CharField("机房名",max_length=32)
    address = models.CharField("机房地址",max_length=200)
    phone = models.CharField("机房联系电话",max_length=15)
    email = models.EmailField("机房联系email")
    letter = models.CharField("idc字母简称",max_length=5)
    def __str__(self):
        return self.name
    class Meta:
        db_table = 'resources_idc'

(2)views.py:

from .models import Idc
from .serializers import IdcSerializer
from rest_framework import viewsets

##########################  版本七   ############################
class IdcViewset(viewsets.ModelViewSet):   --->modelviewset继承了所有的操作方法
    """
    retrieve:返回指定Idc信息
     list:返回指定Idc列表
     update:更新Idc信息
     destroy:删除idc记录
     create:创建idc记录
     partial_update:更新部分字段
    """
    queryset = Idc.objects.all()
    serializer_class = IdcSerializer

(3)serializer.py:

from rest_framework import serializers
from .models import Idc
class IdcSerializer(serializers.Serializer):   -->注意label是测试页面显示中文,help_text是接口文档页面显示中文
    """
    Idc 序列化类
    """
    id      = serializers.IntegerField(read_only=True)  #只读的,即忽略可不传
    name    = serializers.CharField(required=True,max_length=32, label="机房名称", help_text="机房名称")  #意思是提交数据时此字段必须填且不能为空
    address = serializers.CharField(required=True,max_length=256, label="机房地址", help_text="机房地址")
    phone   = serializers.CharField(required=True,max_length=15, label="联系电话", help_text="联系电话")
    email   = serializers.EmailField(required=True, label="email", help_text="email")
    letter  = serializers.CharField(required=True,max_length=5, label="字母简称", help_text="字母简称")

    def create(self, validated_data):
        return Idc.objects.create(**validated_data)
    def update(self, instance, validated_data): #对已经验证过的非常干净的数据进行修改,instance是当前的对象
        instance.name = validated_data.get("name", instance.name)  #哪些字段可以修改,且默认名是
        instance.address = validated_data.get("address", instance.address)
        instance.phone = validated_data.get("phone", instance.phone)
        instance.email = validated_data.get("email", instance.email)
        instance.save()  #保存
        return instance  #返回

(4)urls.py:

from django.conf.urls import include, url
from django.contrib import admin
from rest_framework.routers import DefaultRouter
from idcs.views import IdcViewset
from apps.users.views import UserViewset

route = DefaultRouter()
route.register("idcs", IdcViewset, basename="idcs")
#注册时三个参数:资源定位符，类，别名
route.register("users", UserViewset, basename="users")
urlpatterns = [
    url(r'^', include(route.urls)),
]

(5)改错误提示为中文

运行后可以看到接口测试页面如下效果：

2.编写api文档

(python36env) [vagrant@CentOS7 devops]$ pip install coreapi

(python36env) [vagrant@CentOS7 devops]$ pip install coreapi-cli

(1)devops/urls.py中:

from django.conf.urls import include, url
from django.contrib import admin
from rest_framework.routers import DefaultRouter
from idcs.views import IdcViewset
from apps.users.views import UserViewset
from rest_framework.documentation import include_docs_urls

route = DefaultRouter()
route.register("idcs", IdcViewset, basename="idcs")
#注册时三个参数:资源定位符，类，别名
route.register("users", UserViewset, basename="users")
urlpatterns = [
    url(r'^', include(route.urls)),
    url(r'^docs/', include_docs_urls("lizhihua运维平台接口文档"))
]

报错：
EST framework可以自动帮助我们生成接口文档。REST framewrok生成接口文档需要coreapi库的支持。在访问生成的接口文档时，可能会发生如下错误：
AttributeError: 'AutoSchema' object has no attribute 'get_link'异常处理
解决：在配置文件settings.py中重新指定schema_class的配置:
REST_FRAMEWORK = {
　　'DEFAULT_SCHEMA_CLASS': 'rest_framework.schemas.coreapi.AutoSchema',
# 新版drf schema_class默认用的是rest_framework.schemas.openapi.AutoSchema

}

运行后效果如下: