如何在Django中修复AttributeError？

Question

我试图返回与当前登录用户关联的播放列表列表，但出现错误消息：AttributeError：'QuerySet'对象没有属性'has_header

我已经包括了我认为是下面代码的相关部分。 有关如何解决此问题的任何建议？

views.py

playlist = UserPlaylist.objects.filter(profile=request.user)
return playlist

models.py

class UserProfile(models.Model):
    user = models.OneToOneField(User)
    def __unicode__(self):
        return self.user

def create_user_profile(sender, instance, created, **kwargs):
    if created:
        UserProfile.objects.create(user=instance)

post_save.connect(create_user_profile, sender=User)         

class Playlist(models.Model):
    playlist = models.CharField('Playlist', max_length = 2000, null=True, blank=True)
    def __unicode__(self):
        return self.playlist

class Video(models.Model):
    video_url = models.URLField('Link to video', max_length = 200, null=True, blank=True)
    def __unicode__(self):
        return self.video_url

class UserPlaylist(models.Model):
    profile = models.ForeignKey(User)
    playlist = models.ForeignKey(Playlist)
    def __unicode__(self):
        return unicode(self.playlist)

class Videoplaylist(models.Model):
    video = models.ForeignKey(Video)
    playlist = models.ForeignKey(UserPlaylist)
    def __unicode__(self):
        return unicode(self.playlist)

Answer 1

我只是想通了...我正在做退货而不是打印。 新秀错误。