投票系统Django Python 源代码推荐

以下是一个使用Django框架实现的简单投票系统的Python源代码示例，供您参考：

models.py 文件：

from django.db import models
from django.contrib.auth.models import User

class Poll(models.Model):
    question = models.CharField(max_length=255)
    pub_date = models.DateTimeField('date published')
    end_date = models.DateTimeField('date ended')
    created_by = models.ForeignKey(User, on_delete=models.CASCADE)

    def __str__(self):
        return self.question

class Choice(models.Model):
    poll = models.ForeignKey(Poll, on_delete=models.CASCADE)
    choice_text = models.CharField(max_length=255)
    votes = models.IntegerField(default=0)

    def __str__(self):
        return self.choice_text

views.py 文件：

from django.shortcuts import render, get_object_or_404
from django.http import HttpResponseRedirect
from django.urls import reverse
from django.contrib.auth.decorators import login_required
from django.utils import timezone

from .models import Poll, Choice

@login_required
def index(request):
    latest_poll_list = Poll.objects.filter(
        pub_date__lte=timezone.now(),
        end_date__gte=timezone.now()
    ).order_by('-pub_date')[:5]
    context = {'latest_poll_list': latest_poll_list}
    return render(request, 'polls/index.html', context)

@login_required
def detail(request, poll_id):
    poll = get_object_or_404(Poll, pk=poll_id)
    return render(request, 'polls/detail.html', {'poll': poll})

@login_required
def vote(request, poll_id):
    poll = get_object_or_404(Poll, pk=poll_id)
    try:
        selected_choice = poll.choice_set.get(pk=request.POST['choice'])
    except (KeyError, Choice.DoesNotExist):
        return render(request, 'polls/detail.html', {
            'poll': poll,
            'error_message': "You didn't select a choice.",
        })
    else:
        selected_choice.votes += 1
        selected_choice.save()
        return HttpResponseRedirect(reverse('polls:results', args=(poll.id,)))

@login_required
def results(request, poll_id):
    poll = get_object_or_404(Poll, pk=poll_id)
    return render(request, 'polls/results.html', {'poll': poll})

urls.py 文件：

from django.urls import path

from . import views

app_name = 'polls'
urlpatterns = [
    path('', views.index, name='index'),
    path('<int:poll_id>/', views.detail, name='detail'),
    path('<int:poll_id>/vote/', views.vote, name='vote'),
    path('<int:poll_id>/results/', views.results, name='results'),
]

以上是一个简单的投票系统的Django Python源代码示例，仅供参考。