class Objective < ActiveRecord::Base

  has_many :indicators
  has_many :objective_children,class_name: "Objective",foreign_key: "parent_id"

  def objective_ids
    objective_children.collect{|o| o.id}
  end

  def objective_ids= objectives_ids
    objectives_ids.each do |id|
      objective_children << Objective.find(id)
    end
  end
end

编辑视图：

<%= form_for(@objective) do |f| %>
  <%= f.collection_check_Boxes :objective_ids,Objective.all,:id,:name %>
  <%= f.submit %>
<% end %>

html复选框确定,但我不知道如何将值设置为客观.我试过定义objective_ids = targets_ids但没有发生任何事情.

控制器：

class ObjectivesController < ApplicationController
    def objective_params
      params.require(:objective).permit(:name,:code,:description,:objective_ids)
    end
end

编辑
日志文件表示不允许的参数：perspective_id,objective_ids