2 class RelationsController < ApiController
5 before_action :authorize, :only => [:create, :update, :delete]
9 before_action :require_public_data, :only => [:create, :update, :delete]
10 before_action :check_api_writable, :only => [:create, :update, :delete]
11 before_action :check_api_readable, :except => [:create, :update, :delete]
12 around_action :api_call_handle_error, :api_call_timeout
17 relation = Relation.from_xml(request.raw_post, true)
19 # Assume that Relation.from_xml has thrown an exception if there is an error parsing the xml
20 relation.create_with_history current_user
21 render :plain => relation.id.to_s
25 @relation = Relation.find(params[:id])
26 response.last_modified = @relation.timestamp
29 render :formats => [:xml]
36 logger.debug request.raw_post
38 relation = Relation.find(params[:id])
39 new_relation = Relation.from_xml(request.raw_post)
41 raise OSM::APIBadUserInput, "The id in the url (#{relation.id}) is not the same as provided in the xml (#{new_relation.id})" unless new_relation && new_relation.id == relation.id
43 relation.update_from new_relation, current_user
44 render :plain => relation.version.to_s
48 relation = Relation.find(params[:id])
49 new_relation = Relation.from_xml(request.raw_post)
50 if new_relation && new_relation.id == relation.id
51 relation.delete_with_history!(new_relation, current_user)
52 render :plain => relation.version.to_s
58 # -----------------------------------------------------------------
61 # input parameters: id
63 # returns XML representation of one relation object plus all its
64 # members, plus all nodes part of member ways
65 # -----------------------------------------------------------------
67 relation = Relation.find(params[:id])
71 # first find the ids of nodes, ways and relations referenced by this
72 # relation - note that we exclude this relation just in case.
74 node_ids = relation.members.select { |m| m[0] == "Node" }.map { |m| m[1] }
75 way_ids = relation.members.select { |m| m[0] == "Way" }.map { |m| m[1] }
76 relation_ids = relation.members.select { |m| m[0] == "Relation" && m[1] != relation.id }.map { |m| m[1] }
78 # next load the relations and the ways.
80 relations = Relation.where(:id => relation_ids).includes(:relation_tags)
81 ways = Way.where(:id => way_ids).includes(:way_nodes, :way_tags)
83 # now additionally collect nodes referenced by ways. Note how we
84 # recursively evaluate ways but NOT relations.
86 way_node_ids = ways.collect do |way|
87 way.way_nodes.collect(&:node_id)
89 node_ids += way_node_ids.flatten
90 nodes = Node.where(:id => node_ids.uniq).includes(:node_tags)
96 next unless node.visible? # should be unnecessary if data is consistent.
99 visible_nodes[node.id] = node
104 next unless way.visible? # should be unnecessary if data is consistent.
110 relations.each do |rel|
111 next unless rel.visible? # should be unnecessary if data is consistent.
117 @relations << relation
120 render :formats => [:xml]
127 raise OSM::APIBadUserInput, "The parameter relations is required, and must be of the form relations=id[,id[,id...]]" unless params["relations"]
129 ids = params["relations"].split(",").collect(&:to_i)
131 raise OSM::APIBadUserInput, "No relations were given to search for" if ids.empty?
133 @relations = Relation.find(ids)
136 render :formats => [:xml]
139 def relations_for_way
140 relations_for_object("Way")
143 def relations_for_node
144 relations_for_object("Node")
147 def relations_for_relation
148 relations_for_object("Relation")
153 def relations_for_object(objtype)
154 relationids = RelationMember.where(:member_type => objtype, :member_id => params[:id]).collect(&:relation_id).uniq
158 Relation.find(relationids).each do |relation|
159 @relations << relation if relation.visible
163 render :formats => [:xml]