From: Tom Hughes <tom@compton.nu>
Date: Fri, 28 Sep 2007 23:33:32 +0000 (+0000)
Subject: Rescale GPS points correctly when downgrading from v5 to v4.
X-Git-Tag: live~8127
X-Git-Url: https://git.openstreetmap.org/rails.git/commitdiff_plain/61dd59712ede9895e8d8ffae349ac1120aa4b69a?hp=6595f97c53b0ba4bda7b31c91df03a105ef72c01

Rescale GPS points correctly when downgrading from v5 to v4.
---

diff --git a/db/migrate/005_tile_tracepoints.rb b/db/migrate/005_tile_tracepoints.rb
index f4d27c18c..51a4d1376 100644
--- a/db/migrate/005_tile_tracepoints.rb
+++ b/db/migrate/005_tile_tracepoints.rb
@@ -16,6 +16,8 @@ class TileTracepoints < ActiveRecord::Migration
   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"