You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
81 lines
2.7 KiB
81 lines
2.7 KiB
from django.shortcuts import render |
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from django.shortcuts import get_object_or_404 |
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from django.http import HttpResponse, HttpResponseRedirect |
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from django.http import Http404 |
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from .models import Choice, Question |
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from django.template import loader |
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from django.urls import reverse |
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from django.views import generic |
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# Create your views here. |
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# def index(request): |
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# latest_question_list = Question.objects.order_by('-pub_date')[:5] |
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# # output = ', '.join([q.question_text for q in latest_question_list]) |
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# # return HttpResponse(output) |
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# # 模板使用方式1 |
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# # template = loader.get_template('index.html') |
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# # context = { |
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# # 'latest_question_list': latest_question_list, |
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# # } |
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# # return HttpResponse(template.render(context, request)) |
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# # 模板使用方法2 |
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# context = { |
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# 'latest_question_list': latest_question_list, |
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# } |
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# return render(request, 'index.html', context) |
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# |
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# |
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# def detail(request, question_id): |
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# # return HttpResponse(f"You're looking at question {question_id}.") |
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# # 添加404页面展示 方式1 |
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# # try: |
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# # question = Question.objects.get(pk=question_id) |
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# # context = {'question': question} |
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# # print(context) |
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# # except Question.DoesNotExist: |
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# # raise Http404("Question does not exist") |
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# # return render(request, 'detail.html', context) |
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# |
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# # 添加404页面展示 方式2 |
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# question = get_object_or_404(Question, pk=question_id) |
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# return render(request, 'detail.html', {'question': question}) |
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# |
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# |
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# def result(request, question_id): |
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# question = get_object_or_404(Question, pk=question_id) |
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# return render(request, 'results.html', {'question': question}) |
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# # return HttpResponse(f"You're looking at the result of question {question_id}.") |
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# 通用视图 |
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class IndexView(generic.ListView): |
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template_name = 'index.html' |
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context_object_name = 'latest_question_list' |
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def get_queryset(self): |
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return Question.objects.order_by('-pub_date')[:5] |
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class DetailView(generic.DetailView): |
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model = Question |
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template_name = 'detail.html' |
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class ResultView(generic.DetailView): |
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model = Question |
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template_name = 'results.html' |
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def vote(request, question_id): |
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question = get_object_or_404(Question, pk=question_id) |
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try: |
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selected_choice = question.choice_set.get(pk=request.POST['choice']) |
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except (KeyError, Choice.DoesNotExist): |
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return render(request, 'detail.html', {'question': question, 'error_message': "You didn't select a choice.", }) |
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else: |
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selected_choice.votes += 1 |
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selected_choice.save() |
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return HttpResponseRedirect(reverse('polls:result', args=(question_id,))) |
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# return HttpResponse(f"You're voting on question {question_id}")
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