DRF练习

DRF 小练习

"""
1、新建一个django项目，定义一个Car类，有name字符串属性，color整型选择属性(0:银色，1:黑色，2:红色，3:灰色)，price全精度小数类型，image图片文件类型，brand字符串类型
2、基于ModelSerializer类，完成Car资源的单查，群查，单增接口

序列化：显示车名，车的颜色，车的价格，车的海报，车的品牌

反序列化：必须提供车名，车的价格，车的品牌(车的匹配需要二次确认re_brand)，车的颜色默认为银色(可以提供)，车的海报不需要提供(默认为空)

"""

settings.py

REST_FRAMEWORK = {
        # 解析模块
    'DEFAULT_PARSER_CLASSES' : {
        'rest_framework.parsers.JSONParser', 
        'rest_framework.parsers.FormParse', 
        'rest_framework.parsers.JSONParser',  
    },
        #渲染模块
    'DEFAULT_RENDERER_CLASSES': {
        'rest_framework.renderers.JSONRenderer',    
        'rest_framework.renderers.BrowsableAPIRenderer',
    },
        # 自定义配置异常模块
     'EXCEPTION_HANDLER': 'api.exception.exception_handler', 
}

views.py

from rest_framework.parsers import JSONParser,FormParser,MultiPartParser
from rest_framework.renderers import JSONRenderer
from rest_framework.renderers import BrowsableAPIRenderer
from rest_framework.views import APIView
from rest_framework.response import Response
class Student(APIView):

parser_classes = [JSONParseer]   #局部解析配置

renderer_classes = [JSONRenderer] #局部渲染配置
<span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">get</span><span class="hljs-params">(self,request,*args,**kwargs)</span>:</span>
    <span class="hljs-keyword">return</span> Response(<span class="hljs-string">'drf get ok'</span>)

<span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">post</span><span class="hljs-params">(self,request,*args,**kwargs)</span>:</span>
    <span class="hljs-keyword">return</span> Response(<span class="hljs-string">'drf post ok'</span>)</code></pre>

exception.py
from rest_framework.views import exception_handler as drf_exception_handler
from rest_framework.response import Response
from rest_framework import status  
def exception_handler(exc, context):

response = drf_exception_handler(exc, context)

detail = '%s-%s-%s' %(context.get('view'),context.get('request'),exc)

if not response:

response = Response({'detail':detail},, status=status.HTTP_500_INTERNAL_SERVER_ERROR, exception=True)

else:

response.data = {'detail':detail}

return response

urls.py
urls.py:
    from django.conf.urls import url, include
    from django.contrib import admin
urlpatterns = [
    url(<span class="hljs-string">r'^admin/'</span>, admin.site.urls),
    url(<span class="hljs-string">r'^api/'</span>, include(<span class="hljs-string">'api.urls'</span>)),
]

api.urls.py:
<span class="hljs-keyword">from</span> django.conf.urls <span class="hljs-keyword">import</span> url
<span class="hljs-keyword">from</span> . <span class="hljs-keyword">import</span>  views
urlpatterns = {
    url(<span class="hljs-string">r'^student/$'</span>,views.Student.as_view()),
}</code></pre>