+ # Find list of revision dates for way and all constituent nodes
+ revdates=[]
+ Way.find(wayid).old_ways.collect do |a|
+ revdates.push(a.timestamp)
+ a.nds.each do |n|
+ Node.find(n).old_nodes.collect do |o|
+ revdates.push(o.timestamp)
+ end
+ end
+ end
+ waycreated=revdates[0]
+ revdates.uniq!
+ revdates.sort!
+
+ # Remove any dates (from nodes) before first revision date of way
+ revdates.delete_if { |d| d<waycreated }
+ # Remove any elements where 2 seconds doesn't elapse before next one
+ revdates.delete_if { |d| revdates.include?(d+1) or revdates.include?(d+2) }
+
+RAILS_DEFAULT_LOGGER.info("** revision dates: #{revdates.inspect}")
+RAILS_DEFAULT_LOGGER.info("** range: #{revdates[-1]-revdates[0]}")
+
+ history = Way.find(wayid).old_ways.reverse.collect do |old_way|
+ user_object = old_way.changeset.user
+ user = user_object.data_public? ? user_object.display_name : 'anonymous'
+ uid = user_object.data_public? ? user_object.id : 0
+ [old_way.version, old_way.timestamp.strftime("%d %b %Y, %H:%M"), old_way.visible ? 1 : 0, user, uid]
+ end
+
+ return ['way',wayid,history]
+ rescue ActiveRecord::RecordNotFound
+ return ['way', wayid, []]
+ end
+
+ # Find history of a node. Returns 'node', id, and
+ # an array of previous versions.
+
+ def getnode_history(nodeid) #:doc:
+ history = Node.find(nodeid).old_nodes.reverse.collect do |old_node|
+ user_object = old_node.changeset.user
+ user = user_object.data_public? ? user_object.display_name : 'anonymous'
+ uid = user_object.data_public? ? user_object.id : 0
+ [old_node.version, old_node.timestamp.strftime("%d %b %Y, %H:%M"), old_node.visible ? 1 : 0, user, uid]
+ end
+
+ return ['node',nodeid,history]
+ rescue ActiveRecord::RecordNotFound
+ return ['node', nodeid, []]
+ end
+
+ # Find GPS traces with specified name/id.
+ # Returns array listing GPXs, each one comprising id, name and description.
+
+ def findgpx(searchterm, usertoken)
+ user = getuser(usertoken)
+ if !uid then return -1,"You must be logged in to search for GPX traces." end
+
+ gpxs = []
+ if searchterm.to_i>0 then
+ gpx = Trace.find(searchterm.to_i, :conditions => ["visible=? AND (public=? OR user_id=?)",true,true,user.id] )
+ if gpx then
+ gpxs.push([gpx.id, gpx.name, gpx.description])
+ end
+ else
+ Trace.find(:all, :limit => 21, :conditions => ["visible=? AND (public=? OR user_id=?) AND MATCH(name) AGAINST (?)",true,true,user.id,searchterm] ).each do |gpx|
+ gpxs.push([gpx.id, gpx.name, gpx.description])
+ end
+ end
+ gpxs