Django ValidationError (日期)

Question

我有一个带有搜索框的系统，可以搜索和显示订单。

我通过使系统按开始日期到结束日期进行搜索或通过使用select标签进行搜索来自定义搜索。

目前，我按开始-结束日期进行搜索，它是有效的，但如果我从select标记中进行搜索和选择，我会得到一个错误，即：

[u"'' value has an invalid format. It must be in YYYY-MM-DD HH:MM[:ss[.uuuuuu]][TZ] format."]

这是我的views.py

def search_form(request):

    data = OrderItem.objects.order_by().values_list('certification_type', flat=True).distinct()
    print data

    if request.method == 'GET':
        user_search = request.GET.get('searched_item')
        print "What is searched for is : ", user_search

        selected_tag = request.GET.get('certification_type')
        print "The selected certificate type is :", selected_tag

        start_date = request.GET.get('first_date')
        print "The start date is : ", start_date

        end_date = request.GET.get('second_date')
        print "The end date is : ", end_date


        if (user_search != None and selected_tag !=None) | (user_search != None and start_date != None and end_date != None):
            items = OrderItem.objects.filter(Q(certification_type__iexact=selected_tag) | (Q(created_on__range=(start_date , end_date))) , (Q(order_type__iexact= user_search) | Q(item__iexact= user_search)
                 | Q(certification_no__iexact= user_search) | Q(client__user__email__iexact= user_search) | Q(client__phone_number__iexact= user_search) | Q(id__iexact= user_search)))


            print "items  ",  items
            return render(request, 'i/search_results.html', {'items':items, 'user_search_query':user_search, 'selected_tag_query': selected_tag, "data":data})

        else:
            return render(request, 'i/dashboard.html', {'error':True,  "data":data})

    else:
        return render(request, 'i/dashboard.html', {'error':True,  "data":data})

    return render(request, 'i/search_results.html', {'items':items, 'user_search_query':user_search, 'selected_tag_query': selected_tag, "data":data})

错误指向以下代码行：

if (user_search != None and selected_tag !=None) | (user_search != None and start_date != None and end_date != None):
    items = OrderItem.objects.filter(Q(certification_type__iexact=selected_tag) | (Q(created_on__range=(start_date , end_date))) , (Q(order_type__iexact= user_search) | Q(item__iexact= user_search) | Q(certification_no__iexact= user_search) | Q(client__user__email__iexact= user_search) | Q(client__phone_number__iexact= user_search) | Q(id__iexact= user_search)))

我很困惑，不知道我做错了什么

Answer 1

您应该在if条件中使用or运算符，而不是|，它是一个按位运算符：

if (user_search != None and selected_tag !=None) or (user_search != None and start_date != None and end_date != None):