space/app/controllers/spaces_controller.rb

class SpacesController < ApplicationController
	def index
		buildings = Building.all.collect do |building|
			{
				"building-title" => building.title,
				"building-image" => building.image.url,
				"alt-title" => building.title
			}
		end

		{
			"buildings" => buildings,
			"extra" => {

			}
		}
	end
end