Question

我最近开始学习Django并且在教程中遇到了一个奇怪的问题..

出于某种原因，如果我使用shell查询特定的'poll'，则was_published_recently方法返回'true'。

我还编写了测试来检查pub_date是否“在一天前和现在之间”，并返回'true'..（所有测试都通过了）

但是，当我在管理面板中列出该民意调查时，它会返回'false'（“最近发布？”列）

admin panel screenshot

有人可以帮我弄清楚我的代码有什么问题吗？

提前致谢！

这是我的polls/models.py：

import datetime
from django.utils import timezone
from django.db import models

# Create your models here.
class Poll(models.Model):
    question = models.CharField(max_length=200)
    pub_date = models.DateTimeField('date published')
    def __unicode__(self):
        return self.question
    def was_published_recently(self):
        now = timezone.now()
        return now - datetime.timedelta(hours=2) <= self.pub_date < now
    was_published_recently.admin_order_field = 'pub_date'
    was_published_recently.boolean = True
    was_published_recently.short_description = 'Published recently?'

class Choice(models.Model):
    poll = models.ForeignKey(Poll)
    choice_text = models.CharField(max_length=200)
    votes = models.IntegerField(default=0)
    def __unicode__(self):
        return self.choice_text

这是polls/tests.py文件：

import datetime

from django.utils import timezone
from django.test import TestCase

from polls.models import Poll

class PollMethodTests(TestCase):

    def test_was_published_recently_with_future_poll(self):
        future_poll = Poll(pub_date=timezone.now() + datetime.timedelta(days=30))
        self.assertEqual(future_poll.was_published_recently(), False)

    def test_was_published_recently_with_old_poll(self):
        old_poll = Poll(pub_date=timezone.now() - datetime.timedelta(days=30))
        self.assertEqual(old_poll.was_published_recently(), False)

    def test_was_published_recently_with_recent_poll(self):
        recent_poll = Poll(pub_date=timezone.now() - datetime.timedelta(hours=1))
        self.assertEqual(recent_poll.was_published_recently(), True)

polls/admin.py文件

from django.contrib import admin
from polls.models import Choice, Poll

class ChoiceInline(admin.TabularInline):
    model = Choice
    extra = 3

class PollAdmin(admin.ModelAdmin):
    fieldsets = [
        (None,          {'fields': ['question']}),
        ('Date information',    {'fields': ['pub_date'], 'classes': ['collapse']}),
    ]
    inlines = [ChoiceInline]
    list_display = ('question', 'pub_date', 'was_published_recently')
    list_filter = ['pub_date']
    search_fields = ['question']

admin.site.register(Poll, PollAdmin)

和polls/views.py：

from django.shortcuts import render, get_object_or_404
from django.http import HttpResponseRedirect, HttpResponse
from django.core.urlresolvers import reverse
from django.views import generic

from polls.models import Choice, Poll

class IndexView(generic.ListView):
    template_name = 'polls/index.html'
    context_object_name = 'latest_poll_list'

    def get_queryset(self):
        """ Devuelve las ultimas 5 encuestas """
        return Poll.objects.order_by('-pub_date')[:5]

class DetailView(generic.DetailView):
    model = Poll
    template_name = 'polls/detail.html'

class ResultsView(generic.DetailView):
    model = Poll
    template_name = 'polls/results.html'

def vote(request, poll_id):
    p = get_object_or_404(Poll, pk=poll_id)
    try:
        selected_choice = p.choice_set.get(pk=request.POST['choice'])
    except (KeyError, Choice.DoesNotExist):
        # Redisplay poll voting form
        return render(request, 'polls/detail.html', {
            'poll': p,
            'error_message': "Please choose an option",
        })
    else:
        selected_choice.votes += 1
        selected_choice.save()
        # Siempre devolver un HttpResponseRedirect despues de trabajar con
        # POSTs. Esto evita que la informacion se inserte dos veces si el
        # usuario le da al BACK.
    return HttpResponseRedirect(reverse('polls:results', args=(p.id,)))

Answer 1

您是否正确设置了settings.py中的时区？我认为测试使用的是系统时间。但Webinterface正在使用您设置的时区。

Django教程（来自django网站）第5部分 - 管理员面板奇怪的行为

1 个答案: