我的模特.py:
class Attendancename(models.Model):
teacher_name = models.ForeignKey(Teachername, default='Ram')
date = models.DateField('Date', default=datetime.datetime.today)
intime = models.TimeField('IN-TIME', auto_now=True)
outtime = models.TimeField('OUT-TIME', auto_now=True)
def hours_conversion(self):
startdelta = datetime.timedelta(hours=self.intime.hours, minutes=self.intime.minutes, seconds=self.intime.seconds)
enddelta = datetime.timedelta(hours=self.outtime.hours, minutes=self.outtime.minutes, seconds=self.outtime.seconds)
return (enddelta-startdelta).seconds/3600
def __str__(self):
return "%s" %self.teacher_name
我的观点.py:
def add_atten(request):
if request.method == 'POST':
form = AttendancenameForm(request.POST)
if form.is_valid():
form.save()
return HttpResponseRedirect(reverse('student:listatten'))
else:
print(form.errors)
else:
form = AttendancenameForm()
return render(request, 'add_atten.html', {'form': form},)
我的表单.py:
class AttendancenameForm(ModelForm):
intime = forms.TimeField(input_formats=('%H:%M',))
outtime = forms.TimeField(input_formats=('%H:%M',))
teacher_name = forms.ModelChoiceField(queryset=Teachername.objects.all())
class Meta:
model = Attendancename
fields = ('teacher_name', 'date', 'intime', 'outtime',)
实际上,我试图根据models.py文件中的'intime'
和'outtime'
的差异来计算总小时数,但它超出了erroe。我想我是在犯语法错误。有人能告诉我正确的语法或方法吗?
有人能告诉我怎么修理吗?
这是因为你不能从
datetime.time
中减去datetime.time
。将它们转换为datetime.datetime
对象,它将返回一个可以使用的datetime.timedelta
对象。If you're lucky enough to be using ^{}, they now have a ^{} that can be used.
如果失败,我建议将
timedelta
转换为秒或浮点表示,这样您就可以将其实际存储到数据库中。编辑:在评论中拉起一个半真半假的答案。
例如-如果要存储(整数)秒数,可以使用
secs = td // timedelta(seconds=1)
从TimeDelta
转换。相关问题 更多 >
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