django – 如何正确地将表中的数据加载到表单？

https://github.com/bethlakshmi/GBE2/tree/GBE-459

问题是：

首先 – 我有一个表单,需要在给定的数据对象中有效的项目：

from [EventScheduleForm][1]:


class EventScheduleForm(forms.ModelForm):
    required_css_class = 'required'
    error_css_class = 'error'

    day = forms.ChoiceField(choices=conference_days)
    time = forms.ChoiceField(choices=conference_times)
    location = forms.ChoiceField(choices=[
            (loc,loc.__str__()) for loc in
            LocationItem.objects.all().order_by('room__name')])
    duration = DurationFormField(
               help_text=scheduling_help_texts['duration'])
...

接下来 – 我有一个单元测试,通过夹具为一些Room对象播种,然后尝试提交表单：

class TestEditEvent(TestCase):
    '''Tests for edit_event view'''

    ''' Fixture to create some rooms,location items,and resource items '''
    fixtures = ['scheduler/fixtures/rooms.json']

    def setUp(self):
        self.factory = RequestFactory()
        self.s_event = factories.SchedEventFactory.create()
        self.profile_factory = factories.ProfileFactory
        self.client = Client()
        self.room = Room.objects.all().order_by('name').first()
        self.s_event.set_location(self.room)

    ...

    def test_edit_event_submit_succeed(self):
        '''edit event post succeeds without errors'''
        profile = self.profile_factory.create()
        form_post = self.get_edit_event_form()
        request = self.factory.post('/scheduler/create/GenericEvent/%d' %
                               self.s_event.pk,form_post)
        request.user = profile.user_object
        functions.grant_privilege(profile,'Scheduling Mavens')
        rooms = Room.objects.all().order_by('name')
        for loc in rooms:
            print "Room:" + loc.__str__() + "| n"
        response = edit_event(request,self.s_event.pk,"GenericEvent")

        self.assertEqual(response.status_code,200)
        print(response.content)
        self.assertFalse('<font color="red">!</font>' in response.content)
        self.assertTrue(form_post['title'] in response.content)
        self.assertTrue(form_post['description'] in response.content)

我发现的是代码行：

location = forms.ChoiceField(choices=[
            (loc,loc.__str__()) for loc in
            LocationItem.objects.all().order_by('room__name')])

失败了.它就像没有房间一样,但是打印声明显示房间设置正确,并在单元测试中看到.

这条线有什么问题？是否有更好/不同的方式来加载可能有不同工作的房间选择列表？

它在集成中起作用 – 但是我们遇到了麻烦,我们必须重新启动数据库或者修改它以使这部分代码正常工作 – 所以关于它如何从数据库中拉出来是不对的.

其他说明：
– Django 1.6& 1.6.5
– SQL Lite和MySQL
– Linux / Mac
– Apache和本机Django服务器

一直是我的基线