Gmaps4rails is developed to simply create a Google Map (Gmaps):

• directly from your model,

• from your own json

It’s based on Ruby on Rails 3 Engines and uses Google Maps API V3.

gem install gmaps4rails

• <%= yield :head %> (in your header)

• <%= yield :scripts %> (in your footer)

• config.serve_static_assets = true (in your production.rb), or copy/paste gmaps4rails.css & gmaps4rail.js files in your app.

In your model, add:

acts_as_gmappable

def gmaps4rails_address self.address #describe how to retrieve the address from your model end

Create a migration and add the following fields to your table (here users):

add_column :users, :latitude, :float #you can change the name, see wiki add_column :users, :longitude, :float #you can change the name, see wiki add_column :users, :gmaps, :boolean #not mandatory, see wiki

In your controller:

@json = User.all.to_gmaps4rails

In your view:

<%= gmaps4rails(@json) %>

Done!

• Markers with Info window, Custom Picture

• Circles, Polylines, Polygons

• Geocode directly your address and retrieve coordinates.

• Wrapper for ‘Direction’, giving instructions to go from point A to point B

• Auto-adjust the map to your markers

• Refresh your map on the fly with Javascript (and Ajax)

• More details in the Wiki

Feel free to contact us, you have your say.

MIT license.

Authors: Benjamin Roth, David Ruyer

Contributor: Alex Vorobiev