django模型不返回主键，为什么主键是none

Question

我的代码：

broadcast_obj = TblBroadcast.objects.using('broadcast_db').create(
                                name=request.POST.get('name'),
                                summary=request.POST.get('summary', ''),
                                cover=request.POST.get('cover'),
                                status=int(request.POST.get('status')),
                                quality=int(request.POST.get('quality'))
                                )
print "========="
print broadcast_obj.name
print broadcast_obj.summary
print broadcast_obj.cover
print broadcast_obj.status
print broadcast_obj.pk
print broadcast_obj.quality
print "========="

输出：

=========
t
t
t
0
None
6
=========

为什么主键不是？当我检查数据库时，django已经创建了项目。broadcast_id是pk，它是auto_increment。

Answer 1

您的型号是否有主键？

class TblBroadcast(models.Model)
    broadcast_id = models.AutoField(primary_key=True)

请参阅下文 https://docs.djangoproject.com/en/1.8/topics/db/models/#automatic-primary-key-fields