# delete a way and it's nodes that aren't part of other ways, with history
def delete_with_relations_and_nodes_and_history(user)
- node_ids_to_delete = self.unique_nodes
+ node_ids = self.nodes.collect {|node| node.id }
+ node_ids_not_to_delete = []
+ way_nodes = WayNode.find(:all, :conditions => "node_id in (#{node_ids.join(',')}) and id != #{self.id}")
+
+ node_ids_not_to_delete = way_nodes.collect {|way_node| way_node.node_id}
+
+ node_ids_to_delete = node_ids - node_ids_not_to_delete
# delete the nodes not used by other ways
node_ids_to_delete.each do |node_id|
end
- # Find nodes that belong to this way only
- def unique_nodes
- node_ids = self.nodes.collect {|node| node.id }
- if node_ids.length==0 then return [] end
- node_ids_in_other_ways = []
- way_nodes = WayNode.find(:all, :conditions => "node_id in (#{node_ids.join(',')}) and id != #{self.id}")
- node_ids_in_other_ways = way_nodes.collect {|way_node| way_node.node_id}
- return node_ids - node_ids_in_other_ways
- end
-
# Temporary method to match interface to nodes
def tags_as_hash
return self.tags