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