Django学习笔记之View操作指南

from django.http import HttpResponse 
from django import http 
# Create your views here. 
class UserView(View): 
 ''' 用户视图 ''' 
 def get(self, request): 
  # 模型类实例化对象 
  users = UserProfile.objects.all() 
  user_list = [] 
  for user in users: 
   user_dict = { 
    'id': user.id, 
    'username': user.username, 
    'password': user.password, 
    'open_id': user.open_id, 
    'code': user.code 
   } 
  user_list.append(user_dict)
  return http.JsonResponse(user_list) 

from django.views import View 
from django.http import HttpResponse 
from django import http 
from django.db.models import Q 
import json 
class UserView(View): 
 ''' 用户视图 ''' 
 def post(self, request): 
  # 获取数据, json转字典 
  dict_data = json.loads(request.body.decode()) 
  print(dict_data) 
  nick_name = dict_data.get('nickName') 
  code = dict_data.get('code') 
  open_id = "xljsafwjeilnvaiwogjirgnlg" 
  # 校验数据 
  result = UserProfile.objects.filter(Q(code=code) | Q(open_id=open_id)) 
  if not result.exists(): 
   # 数据入库 
   user = UserProfile.objects.create( username=nick_name, open_id=open_id, code=code ) 
   # 返回响应 
   user_dict = { 
    'id': user.id, 
    'username': user.username, 
    'password': user.password, 
    'open_id': user.open_id, 
    'code': user.code 
   } 
   return http.JsonResponse(user_dict) 
  return http.JsonResponse("用户已存在", safe=False, status=202)

class UserProfileDetail(View): 
 ''' 详情视图 ''' 
 def get(self, request): 
  userInfo = UserProfile.objects.get(id=id) 
  if not userInfo: 
   return HttpResponse("查询的用Info户不存在", status=404)     
  user_dict = { 
   'id': userInfo.id, 
   'username': userInfo.username, 
   'password': userInfo.password, 
   'open_id': userInfo.open_id, 
   'code': userInfo.code 
  } 
  return http.JsonResponse(user_dict, status=200) 

class UserProfileDetail(View): 
 ''' 详情视图 ''' 
 def put(self, request, id): 
  data_dict = json.loads(request.body.decode()) 
  userInfo = UserProfile.objects.get(id=id) 
  if not userInfo: 
   return HttpResponse("查询的用Info户不存在", status=404)     
  UserProfile.objects.filter(id=id).update(**data_dict) 
  userInfo = UserProfile.objects.get(id=id) 
  user_dict = { 
   'id': userInfo.id, 
   'username': userInfo.username, 
   'password': userInfo.password, 
   'open_id': userInfo.open_id, 
   'code': userInfo.code 
  } 
  return http.JsonResponse(user_dict, status=200)

class UserProfileDetail(View): 
 ''' 详情视图 ''' 
 def delete(self, request, id): 
  userInfo = UserProfile.objects.filter(id=id) 
  if not userInfo: 
   return HttpResponse("删除的数据不存在", status=404)      
  UserProfile.objects.filter(id=id).delete() 
  return HttpResponse("数据删除成功", status=204)