On May 23, 6:39 pm, 伟泓 徐 <eternalstrikefree...@hotmail.com> wrote:
> class People(models.Model):
> GenderChoice=(
> (u'M', u'Male'),
> (u'F', u'Female'),
> )
> PositionChoice=(
> (u'S',u'Student'),
> (u'A',u'Admin'),
> )
> Schoolnum=models.IntegerField(primary_key=True)
> Gender=models.CharField(max_length=100,choices=GenderChoice)
> Name=models.CharField(max_length=100)
> Birthday=models.DateField()
> Age=models.IntegerField()
> Email=models.EmailField(blank=True)
> Password=models.CharField(max_length=100)
> Position=models.CharField(max_length=100,choices=PositionChoice)
> CellPhoneNumber=models.IntegerField(max_length=11)
> HeadImage=models.ImageField(upload_to='c:\website\photos')
> def __unicode__(self):
> return self.Name
> def meta(self):
> ordering=['Name']
> abstract=True
>
> class Comment(models.Model):
> CommentSchoolNum=models.ForeignKey('People')
> CommentWord=models.TextField()
> CommentTime=models.DateField()
> def __unicode__(self):
> return self.CommentWord
>
> why I cannot use such sentense:
> s=People.objects.filter(Position='A')
> s.comment_set.all()
>
> The django says that the queryset does not have the attribution
> comment_set.Why?
>
Not sure why you needed to post this question three times.
`s` is a queryset, composing a number of People objects. So it doesn't
itself have a comment_set attribute - neither does it have Schoolnum
or Gender. It's the *members* of the s queryset that have these
atttributes.
--
DR.
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