X-Git-Url: https://git.openstreetmap.org/rails.git/blobdiff_plain/a9ff3bfc4b94530debc35bee33ee7558d0f7b61d..8ae5d94b2f16d6f2cf1739e19ebc3793a18a0a4a:/app/models/node.rb

diff --git a/app/models/node.rb b/app/models/node.rb
index 3a1d580e0..8f154b473 100644
--- a/app/models/node.rb
+++ b/app/models/node.rb
@@ -8,7 +8,7 @@ class Node < ActiveRecord::Base
 
   belongs_to :changeset
 
-  has_many :old_nodes, :foreign_key => :id
+  has_many :old_nodes, :foreign_key => :id, :order => :version
 
   has_many :way_nodes
   has_many :ways, :through => :way_nodes
@@ -30,9 +30,12 @@ class Node < ActiveRecord::Base
   validate :validate_position
   validates_associated :changeset
 
+  scope :visible, where(:visible => true)
+  scope :invisible, where(:visible => false)
+
   # Sanity check the latitude and longitude and add an error if it's broken
   def validate_position
-    errors.add_to_base("Node is not in the world") unless in_world?
+    errors.add(:base, "Node is not in the world") unless in_world?
   end
 
   #
@@ -133,13 +136,11 @@ class Node < ActiveRecord::Base
     Node.transaction do
       self.lock!
       check_consistency(self, new_node, user)
-      way = WayNode.find(:first, :joins => :way, 
-                         :conditions => [ "current_ways.visible = ? AND current_way_nodes.node_id = ?", true, self.id ])
-      raise OSM::APIPreconditionFailedError.new("Node #{self.id} is still used by way #{way.way.id}.") unless way.nil?
+      ways = Way.joins(:way_nodes).where(:visible => true, :current_way_nodes => { :node_id => id }).order(:id)
+      raise OSM::APIPreconditionFailedError.new("Node #{self.id} is still used by ways #{ways.collect { |w| w.id }.join(",")}.") unless ways.empty?
       
-      rel = RelationMember.find(:first, :joins => :relation, 
-                                :conditions => [ "visible = ? AND member_type='Node' and member_id=? ", true, self.id])
-      raise OSM::APIPreconditionFailedError.new("Node #{self.id} is still used by relation #{rel.relation.id}.") unless rel.nil?
+      rels = Relation.joins(:relation_members).where(:visible => true, :current_relation_members => { :member_type => "Node", :member_id => id }).order(:id)
+      raise OSM::APIPreconditionFailedError.new("Node #{self.id} is still used by relations #{rels.collect { |r| r.id }.join(",")}.") unless rels.empty?
 
       self.changeset_id = new_node.changeset_id
       self.tags = {}