django项目序列化serializers
第一步,安装
pip install djangorestframework
第二步,在settings.py里去注册应用
INSTALLED_APPS = [‘rest_framework‘ ]
第三步,在合适的路径下创建一个serializers.py文件,内容如下:
主要目的是获取不同表的字段,将多个表中的字段集中为一个大的集合,方便调用
1.model指定序列化的表
2.fields指定需要的字段
3.将一个序列化的实例放入到另一个序列化里,那么在这个当前序列化里也可以调用这个实例的字段,也就是把2个表中的字段集合到了一起
from rest_framework import serializers from .models import News,NewsCategory,Comment from apps.xfzauth.serializers import UserSerializer class NewsCategorySerializer(serializers.HyperlinkedModelSerializer): class Meta: model = NewsCategory fields = [‘id‘,‘name‘] class NewsSerializer(serializers.HyperlinkedModelSerializer): category = NewsCategorySerializer() author = UserSerializer() class Meta: model = News fields = [‘id‘,‘title‘,‘desc‘,‘thumbnail‘,‘category‘,‘author‘,‘pub_time‘] class CommentSerializer(serializers.HyperlinkedModelSerializer): author = UserSerializer() class Meta: model = Comment fields = [‘id‘,‘content‘,‘author‘,‘pub_time‘]
第四步,在视图中导入serializers.py文件,调用此文件把要序列化的实例放进去实现序列,然后在通过ajax把数据得到
many=True:表示queryset对象,False表示为model对象,默认为False
def news_comment(request): commentform = CommentForm(request.POST) print(request.POST) print(commentform.is_valid()) if commentform.is_valid(): content = commentform.cleaned_data.get(‘content‘) news_id = commentform.cleaned_data.get(‘news_id‘) news = News.objects.get(pk=news_id) comment = Comment.objects.create(content=content,news=news,author=request.user) serializer = CommentSerializer(comment,many=True) return restful.result(data=serializer.data) else: return restful.params_error(message=commentform.get_errors())