RubyOnRails4呈現JSON時如何從has_many關系中排除屬性

Question

有沒有辦法像我對@databases一樣從：jobs中排除屬性？ 我是紅寶石和Rails的新手，所以我懷疑（希望：讀到）我的語法錯誤，這很容易解決。

wants.json { render :json => @databases, :include => [:jobs], :except => [:id, :created_at, :updated_at] }

Answer 1

如果@databases對象的模型類具有has_many :jobs則可以執行以下操作：

render :json => @databases.to_json(:include => {:jobs => {:except => [:created_at, updated_at]}}, :except => [:id, :created_at, :updated_at])

Answer 2

解

已將=> { :except => [:id] }到:jobs

wants.json { render :json => @databases, :include => [:jobs => { :except => [:id] }, :except => [:id, :created_at, :updated_at] }