ActionController::Base.helpers.asset_path("configuration.yml")
render json: {url: ActionController::Base.helpers.image_path('fondos/big_MKF_1176-235.jpg')}
###Example: Serv different photo each time a new photo is requested
def new_photo
big_photos = ["fondos/foto-1.jpg", "fondos/foto-2.jpg", "fondos/foto-3.jpg"]
index = session[:big_photo] ||= 0
index += 1
index = 0 if index >= big_photos.size
session[:big_photo] = index
render json: {url: ActionController::Base.helpers.image_url(big_photos[index])}
end