Class: Hash

Inherits:
Object
  • Object
show all
Defined in:
lib/hash.rb

Instance Method Summary collapse

Instance Method Details

#to_gmaps4rails(init = false) ⇒ Object 



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# File 'lib/hash.rb', line 2

def to_gmaps4rails(init = false)
  #the variable 'options' must have the following structure
  #{  
  #   "map_options" => hash,
  #   "markers"     => { "data" => json, "options" => hash },
  #   "polylines"   => { "data" => json, "options" => hash },
  #   "polygons"    => { "data" => json, "options" => hash },
  #   "circles"     => { "data" => json, "options" => hash },
  #   "direction"   => { "data" => hash, "options" => hash }
  #}
  # "map_options" and "direction" must be treated separately because there content is slightly different from the others:
  # - "map_options" has no data
  # - "direction" has a hash as a data and waypoints options must be processed properly
  # 
  # in the following code, I loop through the elements of the hash
  #
  result = Array.new
  
  #Don't display js concerning map if no need to be initialized
  if init == true
    #because map should be initialized first, we must extract possible map_options
    unless self["map_options"].nil?
      self["map_options"].each do |option_k, option_v|
        if option_k == "bounds" #particular case
          result << "Gmaps4Rails.map_options.#{option_k} = #{option_v};"
        else
        result << "Gmaps4Rails.map_options.#{option_k} = #{Gmaps4rails.filter option_v};"
        end
      end
    end

    result << "Gmaps4Rails.initialize();"
  end #if init
  each do |category, content| #loop through options hash
    case category
    when "map_options"
  	#already taken into account above => nothing to do here
  	when "direction"
  	  result <<  "Gmaps4Rails.direction_conf.origin = '#{content["data"]["from"]}';"
  	  result << "Gmaps4Rails.direction_conf.destination = '#{content["data"]["to"]}';"

      content["options"] ||= Array.new 
  	  content["options"].each do |option_k, option_v| 
        if option_k == "waypoints"
          waypoints = Array.new
  				option_v.each do |waypoint|
  				  waypoints << { "location" => waypoint, "stopover" => true }.to_json
  				end
  	      result << "Gmaps4Rails.direction_conf.waypoints = [#{waypoints * (",")}];"
        else #option_k != "waypoint"
  	      result << "Gmaps4Rails.direction_conf.#{option_k} = #{Gmaps4rails.filter option_v};"	
        end
      end #end .each
  	  result << "Gmaps4Rails.create_direction();"
  	else #default behaviour in case condition
  	  result << "Gmaps4Rails.#{category} = #{content["data"]};"
  		content["options"] ||= Array.new 
  	  content["options"].each do |option_k, option_v|
  	    result << "Gmaps4Rails.#{category}_conf.#{option_k} = #{Gmaps4rails.filter option_v};"		
  		end
  	    result << "Gmaps4Rails.create_#{category}();"
  	end 
  end
  result << "if(typeof gmaps4rails_callback == 'function') { gmaps4rails_callback(); }"
  result * ('
')
end