Don't bother deleting points which don't exist before importing a

[rails.git] / app / models / trace.rb

diff --git a/app/models/trace.rb b/app/models/trace.rb
index 7d4f01dad344b8ad503d5920b4374faa793b3f4b..a2bebf1dd691565bcdf893cd67b450572f0838e3 100644 (file)
--- a/app/models/trace.rb
+++ b/app/models/trace.rb
@@ -3,7 +3,6 @@ class Trace < ActiveRecord::Base
 
   validates_presence_of :user_id, :name, :timestamp
   validates_presence_of :description, :on => :create
-  validates_format_of :tagstring, :with => /^[^\/;.,?]*$/
 #  validates_numericality_of :latitude, :longitude
   validates_inclusion_of :public, :inserted, :in => [ true, false]
   
@@ -176,7 +175,12 @@ class Trace < ActiveRecord::Base
       f_lon = 0
       first = true
 
-      Tracepoint.delete_all(['gpx_id = ?', self.id])
+      # If there are any existing points for this trace then delete
+      # them - we check for existing points first to avoid locking
+      # the table in the common case where there aren't any.
+      if Tracepoint.exists?(['gpx_id = ?', self.id])
+        Tracepoint.delete_all(['gpx_id = ?', self.id])
+      end
 
       gpx.points do |point|
         if first