Django 通用视图 - 来自 DetailView 实例的 ListView

Question

我正在使用通用视图 DetailView 和 ListView

我有三个模型 User、Business 和 Invoice。一个用户可以有多个企业可以有多个发票。

#mixins.py
class BusinessOwnerRequiredMixin(object):

    def has_permissions(self):
        obj = self.get_object()
        if isinstance(obj, Business):
        # Assumes that your Article model has a foreign key called `auteur`.
            return obj.owner == self.request.user

    def dispatch(self, request, *args, **kwargs):
        if not self.has_permissions():
            raise PermissionDenied
        return super(BusinessOwnerRequiredMixin, self).dispatch(request, *args, **kwargs)

#views.py
class BusinessDashboard(BusinessOwnerRequiredMixin, DetailView):
    model = Business
    template_name = "business/business-main.html"

class InvoiceListView(BusinessDashboard):
    template_name = "business/purchase/purchase_invoice-main.html"

class InvoiceDetailView(InvoiceListView):
    template_name = "business/purchase/purchase_invoice.html"

#urls.py
path(r'business/<pk>/purchase_invoices/<pid>/',vw.PurchaseInvoiceDetailView.as_view(), name='purchase_invoice'),
path(r'business/<pk>/purchase_invoices/',vw.PurchaseInvoiceListView.as_view(), name='purchase_invoices')

我正在寻找的是从业务的 DetailView 继承发票的 ListView，即从业务的实例继承，即必须列出特定业务的所有发票。

如何实现：

 #views.py
    #views.py
class BusinessDashboard(BusinessOwnerRequiredMixin, DetailView):
    model = Business
    template_name = "business/business-main.html"

class InvoiceListView(BusinessDashboard, ListView):
    model = Invoice
    template_name = "business/purchase/purchase_invoice-main.html"

class InvoiceDetailView(InvoiceListView, DetailView):
    model = Invoice
    template_name = "business/purchase/purchase_invoice.html"

但这行不通，因为我在每个 class...

上覆盖了 model

对于 url http://example.com/business/1/invoices/1/，在模板中我必须有一个带有发票实例的变量。

Answer 1

不需要继承；您只需要定义 get_queryset 以按业务 pk 过滤发票。

class InvoiceListView(ListView):
    template_name = "business/purchase/purchase_invoice-main.html"

    def get_queryset(self):
        return Invoice.objects.filter(business_id=self.kwargs['pk'])

Django 通用视图 - 来自 DetailView 实例的 ListView

Django Generic View - ListView from an instance of DetailView

django

django-templates

django-models

django-views

django-generic-views