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在同一模板页面上显示分页ListView和UpdateView

django-class-based-views pagination django

BeeNag · 技术社区 · 7 年前

我正在尝试创建一个 Django 页面中可以更新某些内容,并且可以在分页表中查看某些内容。模型如下所示:

class CostGroup(models.Model):
    name = models.CharField(max_length=200)
    description = models.CharField(max_length=200)

    def get_absolute_url(self):
        return reverse(
            'costgroup_detail', 
            kwargs={
                'costgroup_pk': self.pk,
            }
        )


class Cost(models.Model):
    cost_group = models.ForeignKey(CostGroup)
    amount = models.DecimalField(max_digits=50, decimal_places=2)

    def get_absolute_url(self):
        return reverse(
            'cost_detail', 
            kwargs={
                'cost_pk': self.pk,
            }
        )

因此,编辑表单用于 name 和 description 的字段 CostGroup 模型和表格应显示“金额”列表`

UpdateView 用于表单模板中包含的表单和表格。现在,由于我想在表中包含分页,我需要在同一页上使用两个视图。我设计的页面最终应该是这样的:

我现在不担心样式,我现在主要关注的是把表格和表格放在同一页上。在当前状态下,我唯一没有的是表的分页:

当前视图如下所示:

class CostDetail(UpdateView):
    model = models.Cost
    pk_url_kwarg = 'cost_pk'
    template_name = 'main/cost_detail.html'
    form_class = forms.CostDetailEditForm
    success_url = reverse_lazy('cost_list')

我有一种感觉,利用Django CBV使用的底层混合可能是一条路,但我不确定如何开始。

任何帮助都将不胜感激

谢谢你抽出时间

2 回复 | 直到 7 年前

Dashdrum 7 年前

(作为一个新的答案,这一澄清似乎效果更好)

看起来你正在处理这两张桌子。对象级别使用成本组,而列表视图显示链接到成本组的成本的子记录。假设这是真的,我会这样做:

class CostDetail(ModelFormMixin, ListView):

    model = CostGroup   # Using the model of the record to be updated
    form_class = YourFormName  # If this isn't declared, get_form_class() will
                               # generate a model form 


    ordering =  ['id']
    paginate_by = 10
    template_name = 'main/cost_detail.html' # Must be declared

    def get_queryset(self):
        # Set the queryset to use the Cost objects that match the selected CostGroup
        self.queryset = Cost.objects.filter(cost_group = get_object())
        # Use super to add the ordering needed for pagination
        return super(CostDetail,self).get_queryset()

    # We want to override get_object to avoid using the redefined get_queryset above
    def get_object(self,queryset=None):  
        queryset = CostGroup.objects.all()
        return super(CostDetail,self).get_object(queryset))

    # Include the setting of self.object in get()
    def get(self, request, *args, **kwargs):

        # from BaseUpdateView
        self.object = self.get_object()

        return super(CostDetail,self).get(request, *args, **kwargs)

    # Include the contexts from both
    def get_context_data(self, **kwargs):

        context = ModelFormMixin.get_context_data(**kwargs)
        context = ListView.get_context_data(**context)
        return context

    # This is the post method found in the Update View
    def post(self, request, *args, **kwargs):

        # From BaseUpdateView
        self.object = self.get_object()

        # From ProcessFormView
        form = self.get_form()
        self.form = form
        if form.is_valid():
            return self.form_valid(form)
        else:
            return self.form_invalid(form)

    def put(self, *args, **kwargs):
        return self.post(*args, **kwargs)

我还没有试着运行这个,所以可能有错误。祝你好运

(请记住,当深入基于类的视图时,ccbv.co.uk是您的朋友)

Dashdrum 7 年前

我正在开发的一个应用程序使用了类似的方法。我从ListView开始,引入FormMixin,然后从FormView引入post()。

class LinkListView(FormMixin, ListView):
    model = Link
    ordering =  ['-created_on']
    paginate_by = 10
    template_name = 'links/link_list.html'

    form_class = OtherUserInputForm

    #=============================================================================#
    #
    #     Handle form input
    #

    def post(self, request, *args, **kwargs):
        """
        Handles POST requests, instantiating a form instance with the passed
        POST variables and then checked for validity.
        """
        form = self.get_form()
        self.form = form
        if form.is_valid():
            return self.form_valid(form)
        else:
            return self.form_invalid(form)

    def put(self, *args, **kwargs):
        return self.post(*args, **kwargs)

    def get_success_url(self):
        return reverse('links')

您可能还希望覆盖 get_object() get_queryset() 和 get_context() .