gistfile1.rb

class CreateCheckins < ActiveRecord::Migration
  def self.up
    create_table :checkins do |t|
      t.string :name
      t.point :latlon, :srid => 4326
      t.timestamps
    end
    add_index :checkins, :latlon, :spatial => true
  end

  def self.down
    remove_index :checkins, :latlon
    drop_table :checkins
  end
end