订购模型

Question

我有以下型号 -

class VideoCredit(models.Model):
    video = models.ForeignKey(VideoInfo)
    profile = models.ForeignKey('UserProfile', blank=True, null=True)
    normalized_name = models.CharField(max_length=100)

我想根据他们是否有个人资料，然后通过noramlized_name来订购信用额度，例如 -

# for the following entries 

id   video             profile           normalized_name
1    Terminator        Terry Gilliam     Terry Gilliam
2    Terminator        James Cameron     James Cameron
3    Dracula            Null              Bela Lugosi

# it would order as: [James Cameron, Terry Gilliam, Bela Lugosi]

我尝试了ordering=['-profile_full_name', 'normalized_name']，但它会首先订购个人资料，但是按字母顺序排列。如果我改为profile_full_name，它会返回那些没有配置文件（NULL字段）的开头。我该怎么做？谢谢。

更新：我明白了这一点，这很好用：

recent_activity=[]
for object in RecentActivity.objects.select_related.all()[:50]:
    if object.event_type == 2:
        credits_yes_profile = object.content_object.videocredit_set.exclude(profile=None).order_by('profile__full_name')
        credits_no_profile = object.content_object.videocredit_set.filter(profile=None).order_by('normalized_name')
        sorted_credits = list(credits_yes_profile) + list(credits_no_profile)
        recent_activity.append((object, sorted_credits))
    else:
        recent_activity.append((object, ''))

Answer 1

recent_activity=[]
for object in RecentActivity.objects.select_related.all()[:50]:
    if object.event_type == 2:
        credits_yes_profile = object.content_object.videocredit_set.exclude(profile=None).order_by('profile__full_name')
        credits_no_profile = object.content_object.videocredit_set.filter(profile=None).order_by('normalized_name')
        sorted_credits = list(credits_yes_profile) + list(credits_no_profile)
        recent_activity.append((object, sorted_credits))
    else:
        recent_activity.append((object, ''))