我有2个如下描述的模型。
class EmpGroup < ActiveRecord::Base
belongs_to :user
has_many :emp_group_members, dependent: :destroy
end
class EmpGroupMember < ActiveRecord::Base
belongs_to :emp_group
belongs_to :user
end
现在的问题是,每当我试图销毁一个组时,就会收到以下错误。
PG::ForeignKeyViolation: ERROR: update or delete on table "emp_groups" violates foreign key constraint "fk_rails_bd68440021" on table "emp_group_members"
DETAIL: Key (id)=(1) is still referenced from table "emp_group_members".
我错过了什么?
:delete_all
不再被允许使用了。 - Mark Swardstrom