27 lines
881 B
Ruby
27 lines
881 B
Ruby
require 'migrate'
|
|
|
|
class TileTracepoints < ActiveRecord::Migration
|
|
def self.up
|
|
add_column "gps_points", "tile", :four_byte_unsigned
|
|
add_index "gps_points", ["tile"], :name => "points_tile_idx"
|
|
remove_index "gps_points", :name => "points_idx"
|
|
|
|
if ENV["USE_DB_FUNCTIONS"]
|
|
Tracepoint.update_all("latitude = latitude * 10, longitude = longitude * 10, tile = tile_for_point(latitude * 10, longitude * 10)")
|
|
else
|
|
Tracepoint.find(: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"
|
|
end
|
|
end
|