1 class ApiController < ApplicationController
6 unless bbox and bbox.count(',') == 3
7 render :nothing => true, :status => 400
11 bbox = bbox.split(',')
13 min_lon = bbox[0].to_f
14 min_lat = bbox[1].to_f
15 max_lon = bbox[2].to_f
16 max_lat = bbox[3].to_f
19 nodes = Node.find(:all, :conditions => ['latitude > ? AND longitude > ? AND latitude < ? AND longitude < ? AND visible = 1', min_lat, min_lon, max_lat, max_lon])
21 node_ids = nodes.collect {|node| node.id }
22 node_ids_sql = "(#{node_ids.join(',')})"
24 # get the referenced segments
25 segments = Segment.find_by_sql "select * from segments where node_a in #{node_ids_sql} or node_b in #{node_ids_sql}"
27 # see if we have nay missing nodes
28 segments_nodes = segments.collect {|segment| segment.node_a }
29 segments_nodes += segments.collect {|segment| segment.node_b }
33 missing_nodes = segments_nodes - node_ids
35 # get missing nodes if there are any
36 nodes += Node.find(missing_nodes) if missing_nodes.length > 0
38 doc = XML::Document.new
39 doc.encoding = 'UTF-8'
40 root = XML::Node.new 'osm'
41 root['version'] = '0.4'
42 root['generator'] = 'OpenStreetMap server'
46 root << node.to_xml_node()
49 segments.each do |segment|
50 root << segment.to_xml_node()
53 render :text => doc.to_s