1 # The ChangesetController is the RESTful interface to Changeset objects
3 class ChangesetController < ApplicationController
6 before_filter :authorize, :only => [:create, :update, :delete, :upload]
7 before_filter :check_write_availability, :only => [:create, :update, :delete, :upload]
8 before_filter :check_read_availability, :except => [:create, :update, :delete, :upload]
9 after_filter :compress_output
11 # Create a changeset from XML.
14 cs = Changeset.from_xml(request.raw_post, true)
19 render :text => cs.id.to_s, :content_type => "text/plain"
21 render :nothing => true, :status => :bad_request
24 render :nothing => true, :status => :method_not_allowed
28 def create_prim(ids, prim, nd)
30 prim.user_id = @user.id
32 prim.save_with_history!
34 ids[nd['id'].to_i] = prim.id
37 def fix_way(w, node_ids)
38 w.nds = w.instance_eval { @nds }.
39 map { |nd| node_ids[nd] || nd }
44 r.members = r.instance_eval { @members }.
45 map { |memb| [memb[0], ids[memb[0]][memb[1].to_i] || memb[1], memb[2]] }
51 changeset = Changeset.find(params[:id])
52 render :text => changeset.to_xml.to_s, :content_type => "text/xml"
53 rescue ActiveRecord::RecordNotFound
54 render :nothing => true, :status => :not_found
60 render :nothing => true, :status => :method_not_allowed
64 # FIXME: this should really be done without loading the whole XML file
67 p.string = request.raw_post
70 node_ids, way_ids, rel_ids = {}, {}, {}
71 ids = {"node"=>node_ids, "way"=>way_ids, "relation"=>rel_ids}
73 res = XML::Document.new
74 res.encoding = 'UTF-8'
75 root = XML::Node.new 'osm'
76 root['version'] = '0.6'
77 root['creator'] = 'OpenStreetMap.org'
80 root << XML::Node.new_comment(" Warning: this is a 0.6 result document, " +
81 "not a normal OSM file. ")
83 Changeset.transaction do
84 doc.find('//osm/create/node').each do |nd|
85 elem = XML::Node.new 'node'
86 node = Node.from_xml_node(nd, true)
87 elem['old_id'] = nd['id']
88 create_prim node_ids, node, nd
89 elem['new_id'] = node.id.to_s
90 elem['new_version'] = node.version.to_s
93 doc.find('//osm/create/way').each do |nd|
94 elem = XML::Node.new 'way'
95 way = Way.from_xml_node(nd, true)
96 elem['old_id'] = nd['id']
97 fix_way(way, node_ids)
98 raise OSM::APIPreconditionFailedError.new if !way.preconditions_ok?
99 create_prim way_ids, way, nd
100 elem['new_id'] = way.id.to_s
101 elem['new_version'] = way.version.to_s
104 doc.find('//osm/create/relation').each do |nd|
105 elem = XML::Node.new 'relation'
106 relation = Relation.from_xml_node(nd, true)
107 elem['old_id'] = nd['id']
108 fix_rel(relation, ids)
109 raise OSM::APIPreconditionFailedError.new if !relation.preconditions_ok?
110 create_prim rel_ids, relation, nd
111 elem['new_id'] = relation.id.to_s
112 elem['new_version'] = relation.version.to_s
116 doc.find('//osm/modify/relation').each do |nd|
117 elem = XML::Node.new 'relation'
118 new_relation = Relation.from_xml_node(nd)
119 relation = Relation.find(new_relation.id)
120 relation.update_from new_relation, @user
121 elem['old_id'] = elem['new_id'] = relation.id.to_s
122 elem['new_version'] = relation.version.to_s
125 doc.find('//osm/modify/way').each do |nd|
126 elem = XML::Node.new 'way'
127 new_way = Way.from_xml_node(nd)
128 way = Way.find(new_way.id)
129 way.update_from new_way, @user
130 elem['old_id'] = elem['new_id'] = way.id.to_s
131 elem['new_version'] = way.version.to_s
134 doc.find('//osm/modify/node').each do |nd|
135 elem = XML::Node.new 'node'
136 new_node = Node.from_xml_node(nd)
137 node = Node.find(new_node.id)
138 node.update_from new_node, @user
139 elem['old_id'] = elem['new_id'] = node.id.to_s
140 elem['new_version'] = node.version.to_s
144 doc.find('//osm/delete/relation').each do |nd|
145 elem = XML::Node.new 'relation'
146 relation = Relation.find(nd['id'])
147 relation.delete_with_history(@user)
148 elem['old_id'] = elem['new_id'] = relation.id.to_s
149 elem['new_version'] = relation.version.to_s
152 doc.find('//osm/delete/way').each do |nd|
153 elem = XML::Node.new 'way'
154 way = Way.find(nd['id'])
155 way.delete_with_relations_and_history(@user)
156 elem['old_id'] = elem['new_id'] = way.id.to_s
157 elem['new_version'] = way.version.to_s
160 doc.find('//osm/delete/node').each do |nd|
161 elem = XML::Node.new 'node'
162 new_node = Node.from_xml_node(nd)
163 node = Node.find(nd['id'])
164 node.delete_with_history(@user)
165 elem['old_id'] = elem['new_id'] = node.id.to_s
166 elem['new_version'] = node.version.to_s
171 render :text => res.to_s, :content_type => "text/xml"