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我正在使用 User.delete_at 在我的应用中启用用户软删除。设置该字段后，我不希望在整个应用程序中返回已删除的用户。因此，鉴于我有以下模型，我设置了以下内容：

User.rb
    has_many :groups, :through => :group_members, :conditions => ['banned = ?', false]
    default_scope :conditions => 'users.deleted_at IS NULL'

Group.rb
    belongs_to :user
    has_many :group_members, :dependent => :destroy, :include => :user, :conditions => ['banned = ?', false]

GroupMember.rb
    belongs_to :group
    belongs_to :user
    default_scope joins(:user).where('users.deleted_at IS NULL')

那么现在的问题是当我运行时：

current_user.groups

我收到以下错误：

    Group Load (0.5ms)  SELECT "groups".* FROM "groups" INNER JOIN "group_members" ON "groups"."id" = "group_members"."group_id" WHERE "group_members"."user_id" = 1 AND (users.deleted_at IS NULL) AND (banned = 'f')
PG::Error: ERROR:  missing FROM-clause entry for table "users"
LINE 1: ..."group_id" WHERE "group_members"."user_id" = 1 AND (users.dele...

有没有更好的方法可以使 User.delete_at 用户不会在整个应用程序中返回？谢谢

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1 回答 1

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我认为你的

.where('users.deleted_at IS NULL')

条件应该是：has_many组内模型的条件...

于 2012-09-24T19:00:30.920 回答