Question

我将以下三种模型与多对多关系联系起来：

class TeamMember(models.Model):
    member_name = models.CharField(max_length=140)
    title = models.CharField(max_length=140, null=True, blank=True)
    email = models.EmailField()
    report = models.ManyToManyField(Report, through='Owner')

class Report(models.Model):
    report_name = models.CharField(max_length=140)
    report_description = models.TextField(null=True, blank=True)
    last_updated = models.DateTimeField(null=True, blank=True)
    metric = models.ManyToManyField(Metric, through='MetricAssociation')

class Owner(models.Model):
    teammember = models.ForeignKey(TeamMember, on_delete=models.CASCADE) 
    report = models.ForeignKey(Report, on_delete=models.CASCADE)

我想构建一个TeamMembers的对象列表，该列表属于特定报告（由所有者指定）但是遇到了麻烦。目前我有报告的ID。我试过这个，但似乎错了：

owners = TeamMember.objects.filter(report__id=id).distinct().values_list('name', flat=True)

Answer 1

name模型中没有字段TeamMember。您有member_name而不是

owners = TeamMember.objects.filter(report_id=id).distinct().values_list('member_name', flat=True)

在旁注中，您可以使用report_id代替需要加入操作的report__id。

从另一方获得许多对多方的一方

1 个答案: