一个模型匹配Django中数据库中的另一个不同模型

Question

我正在尝试创建一个表单，将事件添加到归因于不同计划实例的列表中，并且我想在数据库中搞砸了一些东西。这是我的代码。

models.py

class Schedules(models.Model):
    course_name = models.ForeignKey(Course)
    location = models.CharField(max_length=128, choices=LOCATION_CHOICES, default='south_plainfield')
    room = models.CharField(max_length=128, choices=ROOM_CHOICES, default='A')
    start_date = models.DateField(auto_now=False, auto_now_add=False, default=datetime.date.today)
    start_time = models.CharField(max_length=128, choices=START_TIME_CHOICES, default='eight-thirty am')
    end_time = models.CharField(max_length=128, choices=END_TIME_CHOICES, default='eight-thirty am')
    instructor = models.ForeignKey(Instructor)
    total_hours = models.CharField(max_length=128, choices=TOTAL_HOURS_CHOICES, default='six')
    frequency = models.CharField(max_length=128)
    status = models.CharField(max_length=128, choices=STATUS_CHOICES)
    interval = models.CharField(max_length=128, choices=INTERVAL_CHOICES, default='1 day')
    initiated_by = models.CharField(max_length=128, null=True)
    schedule_id = models.IntegerField(default=0)

    def save(self, flag=True, *args, **kwargs):
        super(Schedules, self).save()
        if flag:
            self.schedule_id = self.id + 10000
            self.save(flag=False, *args, **kwargs)

    @property
    def end_date(self):
        days = get_days(self.interval)
        return self.start_date + datetime.timedelta(days=days)

    def __str__(self):
        return self.course_name

class Event(models.Model):
    name = models.CharField(max_length=128, choices=EVENT_CHOICES, default='final exam')
    instructor = models.ForeignKey(Instructor, null=True)
    schedule = models.ForeignKey(Schedules, null=True)
    date = models.DateField(auto_now=False, auto_now_add=False, null=True)
    start_time = models.CharField(max_length=128, null=True)
    end_time = models.CharField(max_length=128, null=True)
    note = models.TextField()

    def __str__(self):
        return self.name

forms.py

class EventForm(forms.ModelForm):
    date = forms.DateField(input_formats=['%m/%d/%Y'], label="Date", widget=DateInput(format='%/m/%d/%Y'), help_text="MM/DD/YYYY")
    name = forms.ChoiceField(choices=EVENT_CHOICES, initial='Final Exam', label="Event", widget=forms.Select(attrs={'class': 'form-control'}))
    instructor = InstructorChoiceField(queryset=Instructor.objects.all(), label="Instructor", widget=forms.Select(attrs={'class': 'form-control'}))
    start_time = forms.CharField(max_length=128, label="Start Time", widget=forms.TextInput(attrs={'class': 'form-control'}))
    end_time = forms.CharField(max_length=128, label="End Time", widget=forms.TextInput(attrs={'class': 'form-control'}))
    notes = forms.CharField(label="Reason", required=False, widget=forms.Textarea(attrs={'class': 'form-control'}))

    class Meta:
        model = Event
        fields = ('name', 'instructor', 'date', 'start_time', 'end_time', 'notes')

views.py

def add_event(request, id):
    try:
        schedule = Schedules.objects.get(id=id)
    except Schedules.DoesNotExist:
        schedule = None

    if request.method == 'POST':
        form = EventForm(request.POST)
        if form.is_valid():
            if schedule:
                event = form.save(commit=False)
                event.schedule = schedule
                event.save()
                return HttpResponseRedirect('event_list', kwargs={'id':schedule.id})
        else:
            print(form.errors)
    else:
        form = EventForm()

    context_dict = {'form':form, 'schedule':schedule}

    return render(request, "schedule/add_event.html", context_dict)

urls.py

    urlpatterns = [
        url(r'^$', schedule_views.Schedule, name='schedule'),
        url(r'^schedule_list/$', schedule_views.schedule_List, name='schedule_list'),
        url(r'^pending_lists/$', schedule_views.pending_Lists, name='pending_lists'),
        url(r'^daily_to_do/$', schedule_views.daily_To_Do, name='daily_to_do'),
        url(r'^weekly_to_do/$', schedule_views.weekly_To_Do, name='weekly_to_do'),
        url(r'^office_schedule/$', schedule_views.office_Schedule, name='office_schedule'),
        url(r'^yearly_schedule/$', schedule_views.yearly_Schedule, name='yearly_schedule'),
        url(r'^start_one_schedule/$', schedule_views.start_One_Schedule, name='start_one_schedule'),
        url(r'^start_multi_schedule/$', schedule_views.start_Multi_Schedule, name='start_multi_schedule'),
        url(r'^alert_emergency/$', schedule_views.alert_Emergency, name='alert_emergency'),
        url(r'^instructor_admin/$', schedule_views.instructor_Admin, name='instructor_admin'),
        url(r'^update_schedule/(?P<pk>\d+)$', schedule_views.update_Schedule, name='update_schedule'),
        url(r'^delete_schedule/(?P<id>\d+)/$', schedule_views.delete_Schedule, name='delete_schedule'),
        url(r'^search_schedule/$', schedule_views.search_Schedule, name='search_schedule'),
        url(r'^event_list/(?P<id>\d+)$', schedule_views.event_list, name='event_list'),
        url(r'^event_list/(?P<id>\d+)/add_event$', schedule_views.add_event, name='add_event'),

]

add_event.html

{% block main_content %}
    <form id="schedule_form" method="post" action="/schedule/event_list/{{ schedule.id }}/add_event">
    {% csrf_token %}
        <div class="row">
            {% for field in form %}
                <div class="col-gl-4 col-md-4">
                    <div class="form-group">
                        <strong>{{ field.errors }}</strong>
                        {{ field.label_tag }}
                        {{ field.help_text }}
                        <br>
                        {{ field }}
                        <script></script>
                    </div>
                </div>
            {% endfor %}
        </div>
    <button type="submit" name="submit">Submit Event</button>
{% endblock %}

出于某种原因，每当我尝试提交活动时，都会收到此错误：

/ schedule / event_list / 18 / add_event

中的OperationalError

table schedule_event没有名为name

的列

我查看了SQLite中的数据库，并且出于某种奇怪的原因，事件模型表具有与“计划模型”表（first_name，last_name等）中的属性完全相同的属性，即使它们完全不同models.py。我已经迁移了一切，但它仍然存在这个问题。

另外值得注意的是，由于某种原因，manage.py要求我在Event模型中的几乎所有属性中都放置默认值，这就是为什么我必须在大多数属性中放置null = True，即使它并没有让我在其他模特中这样做。我想这可能与它有关。此外，当我迁移时，这个错误会说明错误的日期格式，但它不会停止迁移或影响项目。再次，只有这个模型。

这真的让我感到沮丧。有人能告诉我这是什么交易？感谢。

编辑：我尝试删除他们再次迁移的模型，然后将其放回并迁移它。最新的迁移在事件中具有正确的属性，但它仍然给我相同的错误，因为错误的迁移可能仍然在弄乱它。