api_controller.rb

class ApiController < ApplicationController
 
  def integer_to_string
    render :json => { :value => params[:value] }.to_json
  end

  def concat
    sum = params[:a] + params[:b]
    render :soap => { :value => sum }.to_json
  end

  def add_circle
    render(:failure => "radius is too small") if params[:radius] < 3.0

    x	   = params[:circle][:center][:x]
    y	   = params[:circle][:center][:y]
    radius = params[:circle][:radius]

    Circle.new(x, y, radius)

    render nil
  end
end