sillyforum/app/controllers/replies_controller.rb

class RepliesController < ApplicationController
before_action :authenticate_user!
def create
      id = params.extract_value(:forum_thread_id)[0]

      reply = params[:reply]

      body = reply["body"]
 
      @reply = Reply.new(
         user_id: current_user.id,
         body: body,
         thread_id: id
      )

      @reply.save
   end
def show

@replies = Reply.all
@thread.replies = Reply.all
end