sms-pager/app/controllers/children_controller.rb

class ChildrenController < ApplicationController
  def index
    @children = Child.all.order(:last_name, :first_name)
    respond_with @children
  end

  def show
    @child = Child.includes(:parents).find_by_id(params[:id])
    @parents = Person.order(:first_name, :last_name)
  end

  def new
    @child = Child.new
  end

  def edit
    @child = Child.find_by_id(params[:id])
  end

  def add
    @child = Child.create child_params
    if @child.persisted?
      redirect_to child_path(@child), notice: 'Created!'
    else
      render :new
    end
  end

  def update
    @child = Child.find_by_id params[:id]
    if @child.update child_params
      redirect_to child_path(@child), notice: 'Updated!'
    else
      render :edit
    end
  end

  private

    def child_params
      params.require(:child).permit(
        :first_name,
        :last_name
      )
    end
end