Question

我正试图提出一个表格,让用户选择一个日期范围,在詹戈产生一个网络查询。我认为,我错了过滤日期,我无法缩短日期。

我的<代码>form.py:

class ReportFiltersForm(forms.Form):
    start_date = forms.DateField(input_formats= %Y,%m,%d ,widget=SelectDateWidget())
    end_date = forms.DateField(input_formats= %Y,%m,%d ,widget=SelectDateWidget())

我的看法

if request.method ==  POST :
    form = ReportFiltersForm(request.POST)
    sdy = request.POST[ start_date_year ]
    sdm = request.POST[ start_date_month ]
    sdd = request.POST[ start_date_day ]
    edy = request.POST[ end_date_year ]
    edm = request.POST[ end_date_month ]
    edd = request.POST[ end_date_day ]
    start_date= datetime.date(sdy, sdm, sdd)
    end_date= datetime.date(edy, edm,edd)

追查

追查 (most recent call last):
File "/usr/lib/python2.6/site-packages/django/core/servers/basehttp.py", line 651, in __call__
return self.application(environ, start_response)
File "/usr/lib/python2.6/site-packages/django/core/handlers/wsgi.py", line 241, in __call__
response = self.get_response(request)
File "/usr/lib/python2.6/site-packages/django/core/handlers/base.py", line 134, in get_response
return self.handle_uncaught_exception(request, resolver, exc_info)
File "/usr/lib/python2.6/site-packages/django/core/handlers/base.py", line 154, in handle_uncaught_exception
return debug.technical_500_response(request, *exc_info)
File "/usr/lib/python2.6/site-packages/django/core/handlers/base.py", line 92, in get_response
response = callback(request, *callback_args, **callback_kwargs)
File "/home/projects/acms/cms/views.py", line 470, in eventreports
start_date= datetime.date(sdy, sdm, sdd)
TypeError: an integer is required

Answer 1

你在这里犯了许多错误。

首先,为了确定<代码>TypeError,您必须将数据输入<代码>int。同样:

...
sdy = int(request.POST[ start_date_year ])
#Do the same with the other 5 fields

然而,这确实是做事的坏处。一个人将不得不在每一领域周围设置<条码>/>除外区块,以确保用户进入立体,而不是体格。

既然你已经使用Django表格,那么为什么不能让你做所有的工作? 在这方面,你将如何这样做:

if request.method ==  POST :
    form = ReportFiltersForm(request.POST)
    if form.is_valid():
        start_date = form.cleaned_data[ start_date ]
        end_date = form.cleaned_data[ end_date ]
        #Do whatever you need to do with this data now. Since you had
        #defined the fields as DateFields, you will automatically get
        #datetime.date objects.
    else:
        return render_to_response( mytemplate.html , { form  : form})
....

这是出于多种原因做事的更好办法。采用这一方式,你可以让Django谨慎地确认用户对你的投入。此外,还将将这些数据输入<代码>日<>。最后,如果用户输入无效数据,将允许他们向用户提供更好的错误信息。

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