Django 从具有2个一对多关系的表中获取结果
在我的应用程序中,我的模型如下所示:Django 从具有2个一对多关系的表中获取结果,django,Django,在我的应用程序中,我的模型如下所示: class Talk(models.Model): title = models.CharField(max_length=200, primary_key=True) speaker = models.CharField(max_length=200) date_of_talk = models.DateField('date_of_talk') def __unicode__(self): return s
class Talk(models.Model):
title = models.CharField(max_length=200, primary_key=True)
speaker = models.CharField(max_length=200)
date_of_talk = models.DateField('date_of_talk')
def __unicode__(self):
return self.title
class Member(models.Model):
name = models.CharField(max_length=200)
telephone_number = models.CharField(max_length=200)
email_address = models.CharField(max_length=200)
membership_type = models.CharField(max_length=1, choices=MEMBERSHIP_TYPES)
membership_number = models.CharField(max_length=200, primary_key=True)
def __unicode__(self):
return self.name
class Event_Attendance(models.Model):
talk = models.ForeignKey('Talk')
membersAttended = models.ForeignKey('Member')
def __unicode__(self):
return '%s attended %s' %(unicode(self.membersAttended), unicode(self.talk))
当我输入演讲时,我希望能够从事件出席
模型中提取所有结果。这是为了让我能知道参加会议的人的名字。我尝试过的每件事都失败了,例如:
a = Event_Attendance(talk="Meteors")
还有其他人有什么想法吗?提前感谢,
迪安我认为,在你的活动出勤模式中,会员参加的领域作为多个领域会更好
class EventAttendance(models.Model):
talk = models.ForeignKey(Talk)
members_attended = models.ManyToManyField(Member)
这将使您更容易获得所需的信息。在“手动”管理表时,我还应该使用through