GeoQuery

Saves you the hassle of writing your own location queries and uses pre-built and reusable methods.

The current version only supports Rails 4.2+. Request other versions by opening an issue.

##Install These instructions already assume you have postgis enabled on your database, please follow the instructions here to enabled it https://github.com/rgeo/activerecord-postgis-adapter#install

Include gem

gem 'geo_query'

Generate the migration

Will add a geography field to your model (Skip if already exists)

# Where user is your model name
rails g geo_query:resource User

Attach the helper to your model

class User < ActiveRecord::Base
  # location column defaults to :coordinates
  geo_queryable column: :coordinates
end

##Usage The helper gives your model the following methods

Instance Methods

# Returns nearest objects
object.near(radius)

Class Methods

# Returns all objects within the specified radius ordered by nearest
Class.near_lat_lon(lat, lon, radius) #radius defaults to 500metres

# Returns all objects within a rectangle
Class.within_bounding_box(min_lat, min_lon, max_lat, max_lon)

Attribute setters

User.create(lat: -38, lon: 144)

More coming soon...