post_3.rb

# GET /companies/1
  # GET /companies/1.json
  def show
    @company = Company.find(params[:id])

    respond_with @company
  end
  
  # POST /companies
  # POST /companies.json
  def create
    @company = Company.new(params[:company])
    
    if @company.save
      respond_with @company, location => @company
    else
      result = {:success => false}
      respond_with result, :location => @company, :status => :unprocessable_entity
    end
  end

  # PUT /companies/1
  # PUT /companies/1.json
  def update
    @user = Company.find(params[:id])

    respond_to do |format|
      if @user.update_attributes(params[:company])
        format.json { head :no_content }
      else
        format.json { render json: @user.errors, status: :unprocessable_entity }
        format.xml { render xml: @user.errors, status: :unprocessable_entity }
      end
    end
  end

  # DELETE /companies/1
  # DELETE /companies/1.json
  def destroy
    @company = Company.find(params[:id])
    @company.destroy

    respond_with ({:success => true})
  end