-# has_many :way_nodes, :class_name => 'OldWayNode', :foreign_key => 'id'
-# has_many :way_tags, :class_name => 'OldWayTag', :foreign_key => 'id'
-
- def old_nodes
- OldWayNode.find(:all, :conditions => ['id = ? AND version = ?', self.id, self.version])
- end
-
- def old_tags
- OldWayTag.find(:all, :conditions => ['id = ? AND version = ?', self.id, self.version])
- end
-
- def to_xml_node
- el1 = XML::Node.new 'way'
- el1['id'] = self.id.to_s
- el1['visible'] = self.visible.to_s
- el1['timestamp'] = self.timestamp.xmlschema
- el1['user'] = self.user.display_name if self.user.data_public?
- el1['version'] = self.version.to_s
-
- self.old_nodes.each do |nd| # FIXME need to make sure they come back in the right order
- e = XML::Node.new 'nd'
- e['ref'] = nd.node_id.to_s
- el1 << e
- end
-
- self.old_tags.each do |tag|
- e = XML::Node.new 'tag'
- e['k'] = tag.k
- e['v'] = tag.v
- el1 << e
- end
- return el1
- end
-
- # Read full version of old way
- # For get_nodes_undelete, uses same nodes, even if they've moved since
- # For get_nodes_revert, allocates new ids
- # Currently returns Potlatch-style array
-
- def get_nodes_undelete
- points = []
- self.nds.each do |n|
- node=Node.find(n)
- points << [node.lon, node.lat, n, node.visible ? 1 : 0, node.tags_as_hash]
- end
- points
- end
-
- def get_nodes_revert
- points=[]
- self.nds.each do |n|
- oldnode=OldNode.find(:first, :conditions=>['id=? AND timestamp<=?',n,self.timestamp], :order=>"timestamp DESC")
- curnode=Node.find(n)
- id=n; v=curnode.visible ? 1 : 0
- if oldnode.lat!=curnode.lat or oldnode.lon!=curnode.lon or oldnode.tags!=curnode.tags then
- # node has changed: if it's in other ways, give it a new id
- if curnode.ways-[self.id] then id=-1; v=nil end
- end
- points << [oldnode.lon, oldnode.lat, id, v, oldnode.tags_as_hash]
- end
- points
- end
-
- # Temporary method to match interface to nodes
- def tags_as_hash
- return self.tags
- end