drf之序列化
在django视图中使用serializer
只是使用serializer类编写API视图,没有用到REST框架
app01下的models.py
from django.db import models from pygments.lexers import get_all_lexers from pygments.styles import get_all_styles LEXERS = [item for item in get_all_lexers() if item[1]] LANGUAGE_CHOICES = sorted([(item[1][0], item[0]) for item in LEXERS]) STYLE_CHOICES = sorted((item, item) for item in get_all_styles()) class Snippet(models.Model): created = models.DateTimeField(auto_now_add=True) title = models.CharField(max_length=100, blank=True, default='') code = models.TextField() linenos = models.BooleanField(default=False) language = models.CharField(choices=LANGUAGE_CHOICES, default='python', max_length=100) style = models.CharField(choices=STYLE_CHOICES, default='friendly', max_length=100) class Meta: ordering = ('created',)
app01下的serializers.py
from rest_framework import serializers from app01 import models class SnippetSerializer(serializers.ModelSerializer): class Meta: model = models.Snippet fields = ('id', 'title', 'code', 'linenos', 'language', 'style')
app01下的views.py
from django.shortcuts import render # Create your views here. from django.http import HttpResponse, JsonResponse from django.views.decorators.csrf import csrf_exempt from rest_framework.renderers import JSONRenderer from rest_framework.parsers import JSONParser from app01.models import Snippet from app01.serializers import SnippetSerializer @csrf_exempt def snippet_list(request): """ because we want to be able to POST to this view from clients that won't have a CSRF token we need to mark the view as csrf_exempt List all code snippets, or create a new snippet. """ if request.method == "GET": snippets = Snippet.objects.all() serializer = SnippetSerializer(snippets, many=True) return JsonResponse(serializer.data, safe=False) elif request.method == "POST": data = JSONParser().parse(request) serializer = SnippetSerializer(data=data) if serializer.is_valid(): serializer.save() return JsonResponse(serializer.data, status=201) return JsonResponse(serializer.errors, status=400) @csrf_exempt def snippet_detail(request, pk): """ Retrieve, update or delete a code snippet. """ try: snippet = Snippet.objects.get(pk=pk) except Snippet.DoesNotExist: return HttpResponse(status=404) if request.method == "GET": serializer = SnippetSerializer(snippet) return JsonResponse(serializer.data) elif request.method == "PUT": data = JSONParser().parse(request) serializer = SnippetSerializer(snippet, data=data) if serializer.is_valid(): serializer.save() return JsonResponse(serializer.data) return JsonResponse(serializer.errors, status=400) elif request.method == 'DELETE': snippet.delete() return HttpResponse(status=204)
urls.py
from django.conf.urls import url from snippets import views urlpatterns = [ url(r'^snippets/$', views.snippet_list), url(r'^snippets/(?P<pk>[0-9]+)/$', views.snippet_detail), ]