1 class RelationController < ApplicationController
5 before_filter :authorize, :only => [:create, :update, :delete]
6 before_filter :check_write_availability, :only => [:create, :update, :delete]
7 before_filter :check_read_availability, :except => [:create, :update, :delete]
8 after_filter :compress_output
12 relation = Relation.from_xml(request.raw_post, true)
15 if !relation.preconditions_ok?
16 render :text => "", :status => :precondition_failed
19 relation.user_id = @user.id
20 relation.save_with_history!
22 render :text => relation.id.to_s, :content_type => "text/plain"
25 render :nothing => true, :status => :bad_request
28 render :nothing => true, :status => :method_not_allowed
34 relation = Relation.find(params[:id])
35 response.headers['Last-Modified'] = relation.timestamp.rfc822
37 render :text => relation.to_xml.to_s, :content_type => "text/xml"
39 render :text => "", :status => :gone
41 rescue ActiveRecord::RecordNotFound
42 render :nothing => true, :status => :not_found
44 render :nothing => true, :status => :internal_server_error
50 relation = Relation.find(params[:id])
51 new_relation = Relation.from_xml(request.raw_post)
53 if new_relation and new_relation.id == relation.id
54 relation.update_from new_relation, user
56 render :nothing => true, :status => :bad_request
58 rescue ActiveRecord::RecordNotFound
59 render :nothing => true, :status => :not_found
60 rescue OSM::APIPreconditionFailedError
61 render :text => "", :status => :precondition_failed
63 render :nothing => true, :status => :internal_server_error
68 #XXX check if member somewhere!
70 relation = Relation.find(params[:id])
71 relation.delete_with_history(@user)
72 rescue OSM::APIAlreadyDeletedError
73 render :text => "", :status => :gone
74 rescue OSM::APIPreconditionFailedError
75 render :text => "", :status => :precondition_failed
76 rescue ActiveRecord::RecordNotFound
77 render :nothing => true, :status => :not_found
79 render :nothing => true, :status => :internal_server_error
83 # -----------------------------------------------------------------
86 # input parameters: id
88 # returns XML representation of one relation object plus all its
89 # members, plus all nodes part of member ways
90 # -----------------------------------------------------------------
93 relation = Relation.find(params[:id])
97 # first collect nodes, ways, and relations referenced by this relation.
99 ways = Way.find_by_sql("select w.* from current_ways w,current_relation_members rm where "+
100 "rm.member_type='way' and rm.member_id=w.id and rm.id=#{relation.id}");
101 nodes = Node.find_by_sql("select n.* from current_nodes n,current_relation_members rm where "+
102 "rm.member_type='node' and rm.member_id=n.id and rm.id=#{relation.id}");
103 # note query is built to exclude self just in case.
104 relations = Relation.find_by_sql("select r.* from current_relations r,current_relation_members rm where "+
105 "rm.member_type='relation' and rm.member_id=r.id and rm.id=#{relation.id} and r.id<>rm.id");
107 # now additionally collect nodes referenced by ways. Note how we recursively
108 # evaluate ways but NOT relations.
110 node_ids = nodes.collect {|node| node.id }
111 way_node_ids = ways.collect { |way|
112 way.way_nodes.collect { |way_node| way_node.node_id }
114 way_node_ids.flatten!
116 way_node_ids -= node_ids
117 nodes += Node.find(way_node_ids)
120 doc = OSM::API.new.get_xml_doc
122 user_display_name_cache = {}
125 if node.visible? # should be unnecessary if data is consistent.
126 doc.root << node.to_xml_node(user_display_name_cache)
127 visible_nodes[node.id] = node
131 if way.visible? # should be unnecessary if data is consistent.
132 doc.root << way.to_xml_node(visible_nodes, user_display_name_cache)
135 relations.each do |rel|
136 if rel.visible? # should be unnecessary if data is consistent.
137 doc.root << rel.to_xml_node(user_display_name_cache)
140 # finally add self and output
141 doc.root << relation.to_xml_node(user_display_name_cache)
142 render :text => doc.to_s, :content_type => "text/xml"
146 render :text => "", :status => :gone
149 rescue ActiveRecord::RecordNotFound
150 render :nothing => true, :status => :not_found
153 render :nothing => true, :status => :internal_server_error
158 ids = params['relations'].split(',').collect { |w| w.to_i }
161 doc = OSM::API.new.get_xml_doc
163 Relation.find(ids).each do |relation|
164 doc.root << relation.to_xml_node
167 render :text => doc.to_s, :content_type => "text/xml"
169 render :nothing => true, :status => :bad_request
173 def relations_for_way
174 relations_for_object("way")
176 def relations_for_node
177 relations_for_object("node")
179 def relations_for_relation
180 relations_for_object("relation")
183 def relations_for_object(objtype)
184 relationids = RelationMember.find(:all, :conditions => ['member_type=? and member_id=?', objtype, params[:id]]).collect { |ws| ws.id }.uniq
186 doc = OSM::API.new.get_xml_doc
188 Relation.find(relationids).each do |relation|
189 doc.root << relation.to_xml_node
192 render :text => doc.to_s, :content_type => "text/xml"