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
13 relation = Relation.from_xml(request.raw_post, true)
15 # We assume that an exception has been thrown if there was an error
16 # generating the relation
18 relation.create_with_history @user
19 render :text => relation.id.to_s, :content_type => "text/plain"
21 # render :text => "Couldn't get turn the input into a relation.", :status => :bad_request
24 render :nothing => true, :status => :method_not_allowed
26 rescue OSM::APIError => ex
33 relation = Relation.find(params[:id])
34 response.headers['Last-Modified'] = relation.timestamp.rfc822
36 render :text => relation.to_xml.to_s, :content_type => "text/xml"
38 render :text => "", :status => :gone
40 rescue ActiveRecord::RecordNotFound
41 render :nothing => true, :status => :not_found
43 render :nothing => true, :status => :internal_server_error
48 logger.debug request.raw_post
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
68 relation = Relation.find(params[:id])
69 new_relation = Relation.from_xml(request.raw_post)
70 if new_relation and new_relation.id == relation.id
71 relation.delete_with_history!(new_relation, @user)
72 render :text => relation.version.to_s, :content_type => "text/plain"
74 render :nothing => true, :status => :bad_request
76 rescue OSM::APIError => ex
78 rescue ActiveRecord::RecordNotFound
79 render :nothing => true, :status => :not_found
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"
145 render :nothing => true, :status => :gone
148 rescue ActiveRecord::RecordNotFound
149 render :nothing => true, :status => :not_found
152 render :nothing => true, :status => :internal_server_error
157 ids = params['relations'].split(',').collect { |w| w.to_i }
160 doc = OSM::API.new.get_xml_doc
162 Relation.find(ids).each do |relation|
163 doc.root << relation.to_xml_node
166 render :text => doc.to_s, :content_type => "text/xml"
168 render :text => "You need to supply a comma separated list of ids.", :status => :bad_request
170 rescue ActiveRecord::RecordNotFound
171 render :text => "Could not find one of the relations", :status => :not_found
174 def relations_for_way
175 relations_for_object("way")
177 def relations_for_node
178 relations_for_object("node")
180 def relations_for_relation
181 relations_for_object("relation")
184 def relations_for_object(objtype)
185 relationids = RelationMember.find(:all, :conditions => ['member_type=? and member_id=?', objtype, params[:id]]).collect { |ws| ws.id[0] }.uniq
187 doc = OSM::API.new.get_xml_doc
189 Relation.find(relationids).each do |relation|
190 doc.root << relation.to_xml_node if relation.visible
193 render :text => doc.to_s, :content_type => "text/xml"