Arel::Haversine

Provides haversine formula, implemented with Arel.

Installation

Add this line to your application's Gemfile:

gem 'arel-haversine'

And then execute:

$ bundle

Or install it yourself as:

$ gem install arel-haversine

Usage

require 'arel/haversine'

class Location < ActiveRecord::Base
  def self.in_order_of_proximity_to(latitude, longitude)
    order(
      Arel::Nodes::Haversine.new(
        arel_table[:latitude],
        arel_table[:longitude],
        latitude,
        longitude
      )
    )
  end
end

Contributing

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request