activerecord - Rails generate records for secondary model on create -

i making sort of checklist section site. have model called commission contain data commissioning task. need when new commission entry created need create series of 30 commission tasks link it. sort of checklist of predefined values person go down through , check. best way this?

here models , controller:

commission.rb

    class commission < applicationrecord       has_many :comtasks       belongs_to :project       belongs_to :user       accepts_nested_attributes_for :comtasks, allow_destroy: true     end 

comtask.rb

    class comtask < applicationrecord       belongs_to :commission       belongs_to :user     end 

commissions_controller.rb

    class commissionscontroller < applicationcontroller       before_action :set_commission, only: [:show, :edit, :update, :destroy]       # /commissions       # /commissions.json       def index         @commissions = commission.all       end        # /commissions/1       # /commissions/1.json       def show       end        # /commissions/new       def new         @commission = commission.new       end        # /commissions/1/edit       def edit       end        # post /commissions       # post /commissions.json       def create         @commission = commission.new(commission_params)          respond_to |format|           if @commission.save             format.html { redirect_to @commission, notice: 'commission created.' }             format.json { render :show, status: :created, location: @commission }           else             format.html { render :new }             format.json { render json: @commission.errors, status: :unprocessable_entity }           end         end       end        # patch/put /commissions/1       # patch/put /commissions/1.json       def update         respond_to |format|           if @commission.update(commission_params)             format.html { redirect_to @commission, notice: 'commission updated.' }             format.json { render :show, status: :ok, location: @commission }           else             format.html { render :edit }             format.json { render json: @commission.errors, status: :unprocessable_entity }           end         end       end        # delete /commissions/1       # delete /commissions/1.json       def destroy         @commission.destroy         respond_to |format|           format.html { redirect_to commissions_url, notice: 'commission destroyed.' }           format.json { head :no_content }         end       end        private         # use callbacks share common setup or constraints between actions.         def set_commission           @commission = commission.find(params[:id])         end           # never trust parameters scary internet, allow white list through.         def commission_params           params.require(:commission).permit(:project_id, :user_id, :description, :objectname, :location, comtasks_attributes: [:id, :content, :notes])         end     end 

any thoughts or suggestions appreciated.

below idea,

def create   @commission = commission.create!(commission_params)   # use create not new generate @commission.id value   # comtask records can use id value reference   create_comtasks_job   # comtask create put in other method   respond_to |format|     if @commission.save        format.html { redirect_to @commission, notice: 'commission created.' }       format.json { render :show, status: :created, location: @commission }     else       format.html { render :new }       format.json { render json: @commission.errors, status: :unprocessable_entity }     end   end end  def create_comtasks_job   # loop 30 tasks / or manual follow   @commission.comtasks.build(content: 'content1',notes:'notes1')   @commission.comtasks.build(content: 'content2',notes:'notes2') end 

additional code model

make sure model has relation sample below

for model

  class commission < activerecord::base     has_many :comtasks   end    class comtask < activerecord::base     belongs_to :commission   end