+require "migrate"
+
class TileTracepoints < ActiveRecord::Migration
def self.up
- add_column "gps_points", "tile", :integer, :null => false, :unsigned => true
+ add_column "gps_points", "tile", :bigint
add_index "gps_points", ["tile"], :name => "points_tile_idx"
remove_index "gps_points", :name => "points_idx"
- begin
+ if ENV["USE_DB_FUNCTIONS"]
Tracepoint.update_all("latitude = latitude * 10, longitude = longitude * 10, tile = tile_for_point(latitude * 10, longitude * 10)")
- rescue ActiveRecord::StatementInvalid => ex
- Tracepoint.find(:all).each do |tp|
+ else
+ Tracepoint.all.each do |tp|
tp.latitude = tp.latitude * 10
tp.longitude = tp.longitude * 10
tp.save!
end
def self.down
- add_index "gps_points", ["latitude", "longitude"], :name => "points_idx"
+ Tracepoint.update_all("latitude = latitude / 10, longitude = longitude / 10")
+
+ add_index "gps_points", %w[latitude longitude], :name => "points_idx"
remove_index "gps_points", :name => "points_tile_idx"
remove_column "gps_points", "tile"
end