如何在控制器方法中设置Rails 4中嵌套参数的值？

当我创建新的请求对象时，我有请求模型和嵌套模型filled_cartridges我还需要在create controller方法中设置嵌套params的值。 我有很多嵌套参数，所以我需要迭代它们，类似的东西：

params[:request][:filled_cartridges_attributes].each do |_,value| # here i try to set :client_id parameter, which is nested # where @client.id is defined value[:client_id] = @client.id # i am pretty sure that the problem is here # is it a correct way of ding that? end 

编辑：

 has_many :filled_cartridges, inverse_of: :request, dependent: :destroy accepts_nested_attributes_for :filled_cartridges, reject_if: proc { |attributes| attributes['title'].blank? },allow_destroy: true 

和我的嵌套模型：

  create_table :filled_cartridges do |t| t.integer :client_id, null: false t.string :cartridge_name, null: false t.integer :cartridge_id, null: false t.integer :request_id, null: false t.integer :count, default: 1 t.datetime :fill_date t.timestamps null: false end 

这里应该在控制器内部设置client_id，request_id和cartridge_id。 而我强大的参数：

 def request_params params.require(:request).permit(:name, :address, :phone, :mobile,:date, :filled_cartridges_attributes => [:client_id,:cartridge_name,:cartridge_id, :request_id,:count,:fill_date,:_destroy,:id], end