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
55 render :text => relation.version.to_s, :content_type => "text/plain"
57 render :nothing => true, :status => :bad_request
59 rescue ActiveRecord::RecordNotFound
60 render :nothing => true, :status => :not_found
61 rescue OSM::APIError => ex
67 #XXX check if member somewhere!
69 relation = Relation.find(params[:id])
70 relation.delete_with_history(@user)
71 rescue OSM::APIError => ex
73 rescue ActiveRecord::RecordNotFound
74 render :nothing => true, :status => :not_found
78 # -----------------------------------------------------------------
81 # input parameters: id
83 # returns XML representation of one relation object plus all its
84 # members, plus all nodes part of member ways
85 # -----------------------------------------------------------------
88 relation = Relation.find(params[:id])
92 # first collect nodes, ways, and relations referenced by this relation.
94 ways = Way.find_by_sql("select w.* from current_ways w,current_relation_members rm where "+
95 "rm.member_type='way' and rm.member_id=w.id and rm.id=#{relation.id}");
96 nodes = Node.find_by_sql("select n.* from current_nodes n,current_relation_members rm where "+
97 "rm.member_type='node' and rm.member_id=n.id and rm.id=#{relation.id}");
98 # note query is built to exclude self just in case.
99 relations = Relation.find_by_sql("select r.* from current_relations r,current_relation_members rm where "+
100 "rm.member_type='relation' and rm.member_id=r.id and rm.id=#{relation.id} and r.id<>rm.id");
102 # now additionally collect nodes referenced by ways. Note how we recursively
103 # evaluate ways but NOT relations.
105 node_ids = nodes.collect {|node| node.id }
106 way_node_ids = ways.collect { |way|
107 way.way_nodes.collect { |way_node| way_node.node_id }
109 way_node_ids.flatten!
111 way_node_ids -= node_ids
112 nodes += Node.find(way_node_ids)
115 doc = OSM::API.new.get_xml_doc
117 user_display_name_cache = {}
120 if node.visible? # should be unnecessary if data is consistent.
121 doc.root << node.to_xml_node(user_display_name_cache)
122 visible_nodes[node.id] = node
126 if way.visible? # should be unnecessary if data is consistent.
127 doc.root << way.to_xml_node(visible_nodes, user_display_name_cache)
130 relations.each do |rel|
131 if rel.visible? # should be unnecessary if data is consistent.
132 doc.root << rel.to_xml_node(user_display_name_cache)
135 # finally add self and output
136 doc.root << relation.to_xml_node(user_display_name_cache)
137 render :text => doc.to_s, :content_type => "text/xml"
141 render :text => "", :status => :gone
144 rescue ActiveRecord::RecordNotFound
145 render :nothing => true, :status => :not_found
148 render :nothing => true, :status => :internal_server_error
153 ids = params['relations'].split(',').collect { |w| w.to_i }
156 doc = OSM::API.new.get_xml_doc
158 Relation.find(ids).each do |relation|
159 doc.root << relation.to_xml_node
162 render :text => doc.to_s, :content_type => "text/xml"
164 render :nothing => true, :status => :bad_request
168 def relations_for_way
169 relations_for_object("way")
171 def relations_for_node
172 relations_for_object("node")
174 def relations_for_relation
175 relations_for_object("relation")
178 def relations_for_object(objtype)
179 relationids = RelationMember.find(:all, :conditions => ['member_type=? and member_id=?', objtype, params[:id]]).collect { |ws| ws.id }.uniq
181 doc = OSM::API.new.get_xml_doc
183 Relation.find(relationids).each do |relation|
184 doc.root << relation.to_xml_node
187 render :text => doc.to_s, :content_type => "text/xml"