基于Python的投票系统源码.zip

from django.shortcuts import render, get_object_or_404 from .models import Question, Choice from django.http import HttpResponse import json from django.views.decorators.csrf import csrf_exempt # 查选所有问题 @csrf_exempt def index(request): question_list = Question.objects.all() # 查询所有的问题 datas = {} # 定义存放问题标题内容的字典 response_data = {} # 定义存放返回信息的字典 if question_list: for question in question_list: datas[question.id] = question.question_text response_data['status'] = '200' response_data['message'] = 'success' response_data['data'] = datas result = json.dumps(response_data) # 将字段转换成json字符串 return HttpResponse(result) else: response_data['status'] = '10021' response_data['message'] = 'null' response_data['data'] = datas result = json.dumps(response_data) return HttpResponse(result) # 查看某个问题的选项 @csrf_exempt def detail(request, question_id): choices = Choice.objects.filter(question_id=question_id) # 通过问题id来查询某个问题的选项 datas = {} response_data = {} if choices: for choice in choices: datas[choice.id] = choice.choice_text response_data['status'] = '200' response_data['message'] = 'success' response_data['data'] = datas result = json.dumps(response_data) return HttpResponse(result) else: response_data['status'] = '10021' response_data['message'] = 'null' response_data['data'] = datas result = json.dumps(response_data) return HttpResponse(result) # 查看投票结果 @csrf_exempt def results(request, question_id): results = Choice.objects.filter(question_id=question_id) datas = {} response_data = {} if results: for r in results: datas[r.choice_text] = r.votes # 把某个选项的投票数量取出赋给字典 response_data['status'] = '200' response_data['message'] = 'success' response_data['data'] = datas result = json.dumps(response_data) return HttpResponse(result) else: response_data['status'] = '10021' response_data['message'] = 'null' response_data['data'] = datas result = json.dumps(response_data) return HttpResponse(result) # 投票 @csrf_exempt def votes(request, question_id, index): p = get_object_or_404(Question, pk=question_id) # 通过关键字问题id来取查询问题对象，如果没有该问题，就返回404 results = Choice.objects.filter(question_id=question_id) # choice_id = request.POST.get('choice', '') response_data = {} if not results: response_data['status'] = '10021' response_data['message'] = 'null' result = json.dumps(response_data) return HttpResponse(result) else: choice_id = results[index].id try: selected_choice = p.choice_set.get(pk=choice_id) except (KeyError, Choice.DoesNotExist): response_data['status'] = '10022' response_data['message'] = 'The problem is not the choice id' result = json.dumps(response_data) return HttpResponse(result) else: selected_choice.votes += 1 selected_choice.save() response_data['status'] = '200' response_data['message'] = 'success' result = json.dumps(response_data) return HttpResponse(result) # 投票 @csrf_exempt def vote(request, question_id): p = get_object_or_404(Question, pk=question_id) # 通过关键字问题id来取查询问题对象，如果没有该问题，就返回404 # 兼容post和get请求 if request.method == 'POST': choice_id = request.POST.get('choice', '') else: choice_id = request.GET.get('choice', '') print(request.POST) print(choice_id) # return HttpResponse(choice_id) response_data = {} if choice_id == '': response_data['status'] = '10021' response_data['message'] = 'null' result = json.dumps(response_data) return HttpResponse(result) try: # selected_choice = Choice.objects.get(pk=choice_id) selected_choice = p.choice_set.get(pk=choice_id) except (KeyError, Choice.DoesNotExist): response_data['status'] = '10022' response_data['message'] = 'The problem is not the choice id' result = json.dumps(response_data) return HttpResponse(result) else: selected_choice.votes += 1 selected_choice.save() response_data['status'] = '200' response_data['message'] = 'success' result = json.dumps(response_data) return HttpResponse(result)