Question

我对Python感到困惑，如果我制作了四个输入文字作为搜索过滤器。在Debug中，我尝试了“ x不是None”或“ x！= None” 但这行不通。 [在请求具有参数的情况下，工作结果良好] [请求没有任何参数时工作不正常] 1

def search(request):
good = request.GET.get("q2")
buyer = request.GET.get("q3")
StartTime = request.GET.get("SD")
EndTime = request.GET.get("ED")
context = {}
if good is not '' or buyer is not '':
    if good != '' and buyer != '':
        context = Dlyndx.objects.filter(
            Q(date__gt=StartTime),Q(date__lte=EndTime),
            Q(dlysale__btype__exact=buyer)&Q(dlysale__ptype__exact=good) |
            Q(dlybuy__btype__exact=buyer)&Q(dlybuy__ptype__exact=good))
        return render_to_response('search.html',{'context':context})
    elif good != '' and buyer == '':
        context = Dlyndx.objects.filter(
            Q(date__gt=StartTime),Q(date__lte=EndTime),
            Q(dlysale__ptype__exact=good) |
            Q(dlybuy__ptype__exact=good))
        return render_to_response('search.html',{'context':context})
    else:
        context = Dlyndx.objects.filter(
            Q(date__gt=StartTime),Q(date__lte=EndTime),
            Q(dlysale__btype__exact=buyer) |
            Q(dlybuy__btype__exact=buyer)).distinct()
        return render_to_response('search.html',{'context':context})
else:
    return render(request,"search.html")

Django网站If Search

0 个答案: