Django-从模型中获取特定数据

我正在尝试建立一个（公寓）预订系统。这个想法是，用户可以选择一个开始日期和结束日期，并预订公寓，如果它不是一直预订的话

我有一个带有“开始日期”和“结束日期”的预订模型，我用它来确定公寓预订的日期

用户可以使用jQueryUI日期选择器（一个小日历）来选择日期。“不可用”日期显示为灰色。 我就是这样做的：

<script type="text/javascript">
        var unavailableDates = ['{{ reservation.all.0.start_date|date:"d-m-Y" }}', '{{ reservation.all.0.end_date|date:"d-m-Y" }}'];
        console.log(unavailableDates);
        function unavailable(date) {
            dmy = date.getDate() + "-" + (date.getMonth() + 1) + "-" + date.getFullYear();
            if ($.inArray(dmy, unavailableDates) == -1) {
                return [true, ""];
            } else {
                return [false, "", "Unavailable"];
            }
        }

        $(function () {
            $("#datepicker").datepicker({
                dateFormat: 'MM-dd-yy',
                beforeShowDay: unavailable
            });

        });
    </script>

…将日历中的日期灰显

我的预订模式如下所示：

班级预订（models.Model）：
公寓=模型。外键（公寓，相关的_name='reservations'，
on_delete=models.CASCADE，blank=True，null=True）
开始日期=models.DateField（blank=True，null=True，unique=True）
end_date=models.DateField（blank=True，null=True，unique=True）
name=models.CharField（默认为“”，最大长度为200，唯一性为True）
定义（自我）：
返回self.name

我认为：

def公寓视图（请求、公寓id）：
reservation=reservation.objects.filter（公寓\uuuu pk=公寓\u id）
公寓=获取对象或404（公寓，主键=公寓id）
上下文={'partment'：单元，}
form=ReservationForm（）
如果request.method==“GET”：
form=ReservationForm（）
elif request.method==“POST”：
表单=预订表单（request.POST）
如果form.is_有效（）：
保留=表单.save（提交=False）
预订公寓
预订。保存（）
form.save（）
返回HttpResponseRedirect（'/booking/'））
args={}
args['form']=form
args['partment']=上下文
args['reservation']=预订
返回渲染（请求'booking/plantment.html'，args）

因为我需要将我的预订过滤到正确的公寓

我的问题是，如何查询与公寓相关的所有日期，包括开始日期和结束日期

所以我需要1号公寓的所有日期，然后是2号公寓的所有日期……等等

我不知道该怎么说，如果这篇文章让人困惑，我道歉

谢谢

稍后编辑： 查看JS代码后，您可能希望在视图中执行以下操作：

import itertools
unavailable_dates = apartment.reservations.values_list('start_date', 'end_date')
context['unavailable_dates'] = list(itertools.chain(*unavailable_dates)) # to convert _list_ of tuples to simple list

您可以获取链接到公寓的预订的开始/结束日期，如下所示：

apartment = get_object_or_404(Apartment, pk=apartment_id)
context['appartment_reservations_dates'] = apartment.reservations.values_list('start_date', 'end_date')

{% for reservation in apartment.reservation.all %}
    {{ reservation.start_date }} - {{ reservation.end_date }}
{% endfor %}

def apartment_view(request, apartment_id):
    context = dict()

    context['apartment'] = get_object_or_404(Apartment, pk=apartment_id)
    context['reservations'] = apartment.reservations.all() # if you want all existing reservations for this specific appartment

    form = ReservationForm()
    if request.method == 'GET':
        form = ReservationForm()

    elif request.method == 'POST':
        form = ReservationForm(request.POST)
        if form.is_valid(): # you can add extra validation here making sure whoever tries to book is booking for an available time interval
            reservation = form.save(commit=False)
            reservation.apartment = apartment
            reservation.save()
            form.save()
            return HttpResponseRedirect('/booking/')

    context['form'] = form
    return render(request, 'booking/apartment.html', args)

如果要直接在HTML模板中处理整个

保留

对象，可以这样做：

apartment = get_object_or_404(Apartment, pk=apartment_id)
context['appartment_reservations_dates'] = apartment.reservations.values_list('start_date', 'end_date')

{% for reservation in apartment.reservation.all %}
    {{ reservation.start_date }} - {{ reservation.end_date }}
{% endfor %}

def apartment_view(request, apartment_id):
    context = dict()

    context['apartment'] = get_object_or_404(Apartment, pk=apartment_id)
    context['reservations'] = apartment.reservations.all() # if you want all existing reservations for this specific appartment

    form = ReservationForm()
    if request.method == 'GET':
        form = ReservationForm()

    elif request.method == 'POST':
        form = ReservationForm(request.POST)
        if form.is_valid(): # you can add extra validation here making sure whoever tries to book is booking for an available time interval
            reservation = form.save(commit=False)
            reservation.apartment = apartment
            reservation.save()
            form.save()
            return HttpResponseRedirect('/booking/')

    context['form'] = form
    return render(request, 'booking/apartment.html', args)

您的视图可能如下所示：

apartment = get_object_or_404(Apartment, pk=apartment_id)
context['appartment_reservations_dates'] = apartment.reservations.values_list('start_date', 'end_date')

{% for reservation in apartment.reservation.all %}
    {{ reservation.start_date }} - {{ reservation.end_date }}
{% endfor %}

def apartment_view(request, apartment_id):
    context = dict()

    context['apartment'] = get_object_or_404(Apartment, pk=apartment_id)
    context['reservations'] = apartment.reservations.all() # if you want all existing reservations for this specific appartment

    form = ReservationForm()
    if request.method == 'GET':
        form = ReservationForm()

    elif request.method == 'POST':
        form = ReservationForm(request.POST)
        if form.is_valid(): # you can add extra validation here making sure whoever tries to book is booking for an available time interval
            reservation = form.save(commit=False)
            reservation.apartment = apartment
            reservation.save()
            form.save()
            return HttpResponseRedirect('/booking/')

    context['form'] = form
    return render(request, 'booking/apartment.html', args)

---

请添加整个视图代码。我不完全确定你想要完成什么？你说的是文章？嗨，亚历克斯，谢谢你的回答。这篇文章是个“打字错误”。我想完成的是获得一套公寓的所有预订。因此，如果我去/apartment1/那里，我有特定于apartment1的预订，当我去/apartment2/时，我有特定于apartment2的预订，等等。。我可以通过执行{reservation.all.0.start|date | date:“d-m-Y”}来逐个访问它们，但我需要一种方法来获取它们，并可能将它们保存到数组中。