2018-7-11 Django REST API小试牛刀

 

 

一、安装REST Framework

1、事先部署好django环境，此处不再赘述。

[root@k8s-minion ~]# pip install djangorestframework
[root@k8s-minion ~]# pip install markdown

 

2、新建一个名为snippets的app

（1）编辑settings.py，注册snippets的APP和rest_framework

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'snippets',
    'rest_framework',
]

（2）更改Models.py

[root@k8s-minion ~]# vim snippets/models.py

class Idc(models.Model):
    ch_name = models.CharField("机房中文名称", max_length=32, unique=True, null=True)
    en_name = models.CharField("机房英文名称", max_length=32, unique=True, null=True)
    address = models.CharField("机房地址", max_length=100, null=True, blank=True)
    ip_range = models.CharField("IP范围", max_length=64, null=True)
    bandwidth = models.CharField("接入带宽", max_length=32, null=True)
    add_person = models.CharField("添加人", max_length=50, null=True)
    add_time = models.CharField("添加时间", max_length=50, null=True)
    description = models.TextField("备注", max_length=100, null=True, blank=True)

    def __str__(self):
        return self.en_name

    class Meta:
        verbose_name = '机房'
        verbose_name_plural = '机房'


（3）在app目录下新建serializers.py
[root@k8s-minion ~]# vim snippets/serializers.py

from rest_framework import serializers
from models import Idc

class IdcSerializer(serializers.HyperlinkedModelSerializer):
    class Meta:
        model = Idc
        fields = '__all__'
        # fields = ('id','ch_name','en_name','address','bandwidth','description')


（4）更改views.py

[root@k8s-minion ~]# vim snnippets/views.py

# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from django.shortcuts import render
from django.views.decorators.csrf import csrf_exempt
from models import *
from rest_framework import viewsets
from rest_framework.parsers import JSONParser
from .serializers import IdcSerializer
from django.http import JsonResponse

class IdcViewSet(viewsets.ModelViewSet):
    queryset = Idc.objects.all().order_by('-add_time')
    serializer_class = IdcSerializer
    #permission_classes = (permissions.IsAuthenticated,)

@csrf_exempt
def idc_list(request):
    if request.method == 'GET':
        snippets = Idc.objects.all()
        serializer = IdcSerializer(snippets,many=True)
        return JsonResponse(serializer.data,safe=False)
    elif request.method == 'POST':
        data = JSONParser().parse(request)
        serializer = IdcSerializer(data=data)
        if serializer.is_valid():
            serializer.save()
            return JsonResponse(serializer.data,status=201)
        return JsonResponse(serializer.errors,status=400)

（5）更改urls.py

[root@k8s-minion ~]# vim snnippets/urls.py

from django.conf.urls import url,include
from django.contrib import admin
from rest_framework import routers
from snippets.views import IdcViewSet
from snippets import views

router = routers.DefaultRouter()
router.register(r'idc', IdcViewSet)


urlpatterns = [
    url(r'^admin/', admin.site.urls),
    url(r'^',include(router.urls)),
    url(r'^idc/$',views.idc_list),
]

(6)运行而后浏览器访问http://127.0.0.1:8000，接着访问list的uri
[root@k8s-minion ~]# python manage.py runserver 0:8000