bigdir/app/controllers/memos_controller.rb

class MemosController < ApplicationController
  
  def new
    @memo = Memo.new

    respond_to do |format|
      format.html # new.html.erb
      format.json { render json: @memo }
    end
  end
  
  def show
    @memo = Memo.find(params[:id])
    @replies = @memo.replies
    
    respond_to do |format|
      format.html # show.html.erb
      format.json { render json: @memo }
    end
  end
  
  def create
    @memo = Memo.new(params[:memo])
    @memo.author_id = User.current.id

    respond_to do |format|
      if @memo.save
        format.html { redirect_to @memo, notice: 'Memo was successfully created.' }
        format.json { render json: @memo, status: :created, location: @memo }
      else
        format.html { render action: "new" }
        format.json { render json: @memo.errors, status: :unprocessable_entity }
      end
    end
  end
  
  def destroy
    @memo = Memo.find(params[:id])
    @memo.destroy

    respond_to do |format|
      format.html { redirect_to memos_url }
      format.json { head :no_content }
    end
  end
end