On The Map

Mongoid concerns for putting models "on the map".

Contains various useful concern modules for:

• position
• address
• geo-coding
• placing model on a map
• geo spatial indexing of position
• geo spatial searching on position

The code examples below use the concerned gem to include the concern modules into a class. You can use a simple include OnTheMap::XXXX in its place or some other concern related API of your choice.

Adressable

• embeds an address on the model using adressable polymorphic relationship
• adds delegate methods to all embedded address fields (setters/getters)
• adds full_address method that returns full adress from concatenation of all fields

Address fields: city, state, state_code, province, province_code, postal_code, country, country_code

class MyModel
  include Mongoid::Document

  include_concern :addressable, from: :on_the_map
end


model = MyModel.new
model.addressable = Address.new street: 'madison avenue 1'
model.addressable.city == 'New York'

GeoLocatable

• includes addressable and positionable concerns
• performs geocoding to calculate new position after an address is created or updated
• adds latitude and longitude to model

Usage

Gemfile

gem 'geocoder'

Depending on usage scenario, you might have to explicitly require geocoder also.

require 'geocoder'

Include the concern:

class MyModel
  include Mongoid::Document

  include_concerns :geo_locatable, from: 'OnTheMap'
end

Mappable

• includes Gmaps4rails::ActsAsGmappable
• adds field normalized_address to store full address calculated and returned by Google Maps geo-coding
• adds method gmaps4rails_address which returns adress used in gmaps geo-coding (if enabled)
• includes geo_locatable and positionable concerns.

Usage

Gemfile

gem 'gmaps4rails'

Depending on usage scenario, you might have to explicitly require gmaps4rails also.

require 'gmaps4rails'

Include the concern:

class MyModel
  include Mongoid::Document

  include_concerns :mappable, from: 'OnTheMap'
end

Positionable

• includes Mongoid::Geospatial into the model to make GeoSpatial methods available
• Adds geo_field position (macro from Mongoid GeoSpatial)
• adds spatial indexing for position field
• positon field is indexed and used in geo-searches (fx find points near a point)

Usage

Gemfile

gem 'mongoid_geospatial'

Depending on usage scenario, you might have to explicitly require mongoid_geospatial also.

require 'mongoid_geospatial'

Include the concern:

class MyModel
  include Mongoid::Document

  include_concerns :positionable, from: 'OnTheMap'
end

See the specs for examples on how to use these concerns.

Note: There is room for improvement ;)

Contributing to on_the_map

• Check out the latest master to make sure the feature hasn't been implemented or the bug hasn't been fixed yet.
• Check out the issue tracker to make sure someone already hasn't requested it and/or contributed it.
• Fork the project.
• Start a feature/bugfix branch.
• Commit and push until you are happy with your contribution.
• Make sure to add tests for it. This is important so I don't break it in a future version unintentionally.
• Please try not to mess with the Rakefile, version, or history. If you want to have your own version, or is otherwise necessary, that is fine, but please isolate to its own commit so I can cherry-pick around it.

Copyright

Copyright (c) 2013 Kristian Mandrup. See LICENSE.txt for further details.