使用过滤器时如何使用 django_tables2 进行搜索

Posted 2023-03-10

【中文标题】使用过滤器时如何使用 django_tables2 进行搜索

【英文标题】：How to search with django_tables2 when using filters

【发布时间】：2019-09-22 00:39:40

【问题描述】：

我的问题是过滤后我无法取回任何数据。 我的搜索字段是：id name 和 surname。最后两个取自客户端，是外键。

filters.py

class OrderFilter(django_filters.FilterSet):
    client__name = django_filters.CharFilter(lookup_expr='icontains')
    client__surname = django_filters.CharFilter(lookup_expr='icontains')

    class Meta:
        model = Order
        fields = ['id']

models.py

class Order(models.Model):
    client = models.ForeignKey(Client,verbose_name=u'Client')

tables.py

class OrderTable(tables.Table):

    #CUSTOM COLUMN EXAMPLE
    order_id=tables.Column(verbose_name= 'ID Order',orderable=False,empty_values=())

class Meta:
        #define the model
        model = Order
        exclude=('id')
        template_name = 'django_tables2/bootstrap.html'
        sequence = ("order_id")

views.py

class OrderListView(SingleTableMixin,FilterView):
    table_class = OrderTable
    model = Order
    template_name='orders/orde_list.html'
    filterset_class = OrderFilter

    def get_context_data(self, **kwargs):
        context = super(OrderListView, self).get_context_data(**kwargs)
        ##filter the orders of the past 4 months.
        last_four_months=date.today() - timedelta(120)
        object_list=Order.objects.filter(order_created__gte=last_four_months,ays=1).order_by('-invoice_date')
        table=self.table_class(object_list)
        RequestConfig(self.request).configure(table)
        context['table'] = table
        #clear all fields
        has_filter = any(field in self.request.GET for field in set(self.filterset_class.get_fields()))
        context['has_filter'] = has_filter
        return context

我注意到，当我创建一个自定义查询集来填充我的表时，例如：object_list=Order.objects.filter(order_created__gte=last_four_months).order_by('-invoice_date') 过滤不起作用。

当我什么都不放时，它可以正常工作。

知道为什么会这样吗？

【参考方案1】：

问题是我没有定义我的自定义查询集必须插入自定义表（tables.py）中，更重要的是要被自定义过滤器（filters.py）过滤。

在这样做之后，自定义查询集正确过滤。

class OrderAYSListView(LoginRequiredMixin,SingleTableMixin,FilterView):
    login_url = '/login/'
    table_class = OrderTable2
    model = Order
    template_name='orders/order_ays_list.html'
    filterset_class = OrderFilter

    def get_context_data(self, **kwargs):
        context = super(OrderAYSListView, self).get_context_data(**kwargs)
        ##filter the orders of the past 4 months.
        last_four_months=date.today() - timedelta(120)
        object_list=Order.objects.filter(order_created__gte=last_four_months,ays=1).order_by('-invoice_date')

        f = self.filterset_class(self.request.GET, queryset=object_list)
        context['filter'] = f
        table = self.table_class(f.qs)
        RequestConfig(self.request).configure(table)
        context['table'] = table
        #clear all fields
        has_filter = any(field in self.request.GET for field in set(self.filterset_class.get_fields()))
        context['has_filter'] = has_filter
        return context