小编Cyc*_*lic的帖子

我的模型看起来像:

class MySchedule(models.Model):
  start_datetime=models.DateTimeField()
  name=models.CharField('Name',max_length=75)

随之而来的是它的ModelForm:

class MyScheduleForm(forms.ModelForm):
  startdate=forms.DateField()
  starthour=forms.ChoiceField(choices=((6,"6am"),(7,"7am"),(8,"8am"),(9,"9am"),(10,"10am"),(11,"11am"),
      (12,"noon"),(13,"1pm"),(14,"2pm"),(15,"3pm"),(16,"4pm"),(17,"5pm"),
      (18,"6pm"
  startminute=forms.ChoiceField(choices=((0,":00"),(15,":15"),(30,":30"),(45,":45")))),(19,"7pm"),(20,"8pm"),(21,"9pm"),(22,"10pm"),(23,"11pm")))

  class Meta:
    model=MySchedule

  def clean(self):
    starttime=time(int(self.cleaned_data.get('starthour')),int(self.cleaned_data.get('startminute')))
    return self.cleaned_data

  try:
    self.instance.start_datetime=datetime.combine(self.cleaned_data.get("startdate"),starttime)

  except TypeError:
    raise forms.ValidationError("There's a problem with your start or end date")

基本上,我试图将模型中的DateTime字段分成3个更容易使用的表单字段 - 日期选择器,小时下拉列表和分钟下拉列表.然后,一旦我获得了三个输入,我将它们重新组合成DateTime并将其保存到模型中.

几个问题:

1)这完全是错误的做法吗？我不想在模型中创建小时,分钟等字段,因为这基本上只是中间数据,所以我想要一种方法将DateTime字段分成子字段.

2)我遇到的困难是当startdate字段为空时 - 似乎永远不会检查非空白,并且当程序期望日期并且获得None时,最终会抛出TypeError.Django在哪里检查空白输入,并提出最终返回到表单的错误？这是我的责任吗？如果是这样,我该怎么做,因为它不评估clean_startdate()因为startdate不在模型中.

3)有没有更好的方法来继承？也许在BetterScheduleForm中继承MyScheduleForm并在那里添加字段？我该怎么做？(我一直在玩它超过一个小时,似乎无法得到它)

谢谢!

[编辑:]关闭返回self.cleaned_data - 最初在复制/粘贴中丢失