我正在尝试在此ListView中创建动态搜索。我的想法是每次尝试继承此视图时指定字段和搜索类型。
我的问题是每次我尝试进行搜索时,它只适用于元组的第一个字段。在我的示例中:requests__email
是第一个字段,当我在查询“app”后打印对象query_q
时,我得到以下输出:
(OR: (AND: ), ('requests__email__icontains', 'app'), (AND: ('requests__email__icontains', 'app'), ('status__icontains', 'app')), (AND: ('requests__email__icontains', 'app'), ('status__icontains', 'app'), ('license_type__name__icontains', 'app')))
我不明白为什么,因为我正在使用运算符,我认为它在|=
中可以正常运行query_q |= Q(**query_kwargs)
。如果我尝试根据其他属性进行搜索,例如status
,则搜索无效。
class DefaultListView(ListView):
searchable_fields = (
('requests__email', 'icontains'),
('status', 'icontains'),
('license_type__name', 'icontains'),
)
def get_queryset(self):
form = self.form_class(self.request.GET)
if form.is_valid():
if not self.searchable_fields:
raise AttributeError('searchable_fields has not been configured.')
term = form.cleaned_data['term']
query_kwargs = dict()
query_q = Q()
# Build a list of Q objects based on the searchable attribute
for field, search_type in self.searchable_fields:
query_kwargs["{0}__{1}".format(field, search_type)] = term
query_q |= Q(**query_kwargs)
ordering = self.get_ordering()
queryset = self.model.objects.filter(query_q)
if ordering:
return queryset.order_by(**ordering)
return queryset
return super(DefaultListView, self).get_queryset()
答案 0 :(得分:1)
如果您想要将查询构建为X = Y或W = Z,那是因为
query_kwargs["{0}__{1}".format(field, search_type)] = term
您在循环的每次迭代中向query_kwargs
添加更多键,而不是重新创建变量
会建议这样的事情
for field, search_type in self.searchable_fields:
query_q |= Q(**{"{0}__{1}".format(field, search_type): term})