(管理员。E301) 'app.model' 没有泛型外键

Question

in models.py

class Activities(models.Model):
    day = models.PositiveIntegerField(default=1, null=False,blank=False,db_index=True)
    activity = models.CharField(max_length=100, blank=False,choices=activity_choices, db_index=True)
    description = models.TextField(null=True,blank=True)
    sequence = models.PositiveIntegerField(null=True,blank=True)
class holidaygroup(models.Model):
    ....
    activity = generic.GenericRelation(Activities)

在 admin.py

class ActivitiesInline(generic.GenericTabularInline):
    model = Activities
class holidaygroupAdmin(ReadOnlyAdminFields,admin.ModelAdmin):
    ....
    inlines = [SeasonalPriceInline,ImageInline,HotelsInline,seoInline,NotesInline,ActivitiesInline,]

当我尝试运行服务器时出现以下错误

ERRORS:
<class 'holidays.admin.ActivitiesInline'>: (admin.E301) 'holidays.Activities' has no GenericForeignKey.

提前致谢

Answer 1

您当前的模型结构是，每个活动下有零个或多个假日组。如果您尝试在一个holidaygroup下存储许多Activities，则应在Activities模型中具有外键：

class holidaygroup(models.Model):
    ...
class Activities(models.Model):
    ...
    holiday_group = models.ForeignKey(holidaygroup)

这样，您可以在每个holidaygroup下都有一个Activities内联列表。