2 class RelationsController < ApiController
5 before_action :check_api_writable, :only => [:create, :update, :delete]
6 before_action :check_api_readable, :except => [:create, :update, :delete]
7 before_action :authorize, :only => [:create, :update, :delete]
11 before_action :require_public_data, :only => [:create, :update, :delete]
12 around_action :api_call_handle_error, :api_call_timeout
14 before_action :set_request_formats, :except => [:create, :update, :delete]
19 relation = Relation.from_xml(request.raw_post, :create => true)
21 # Assume that Relation.from_xml has thrown an exception if there is an error parsing the xml
22 relation.create_with_history current_user
23 render :plain => relation.id.to_s
27 @relation = Relation.find(params[:id])
28 response.last_modified = @relation.timestamp
31 respond_to do |format|
41 logger.debug request.raw_post
43 relation = Relation.find(params[:id])
44 new_relation = Relation.from_xml(request.raw_post)
46 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
48 relation.update_from new_relation, current_user
49 render :plain => relation.version.to_s
53 relation = Relation.find(params[:id])
54 new_relation = Relation.from_xml(request.raw_post)
55 if new_relation && new_relation.id == relation.id
56 relation.delete_with_history!(new_relation, current_user)
57 render :plain => relation.version.to_s
63 # -----------------------------------------------------------------
66 # input parameters: id
68 # returns XML representation of one relation object plus all its
69 # members, plus all nodes part of member ways
70 # -----------------------------------------------------------------
72 relation = Relation.find(params[:id])
76 # first find the ids of nodes, ways and relations referenced by this
77 # relation - note that we exclude this relation just in case.
79 node_ids = relation.members.select { |m| m[0] == "Node" }.map { |m| m[1] }
80 way_ids = relation.members.select { |m| m[0] == "Way" }.map { |m| m[1] }
81 relation_ids = relation.members.select { |m| m[0] == "Relation" && m[1] != relation.id }.map { |m| m[1] }
83 # next load the relations and the ways.
85 relations = Relation.where(:id => relation_ids).includes(:relation_tags)
86 ways = Way.where(:id => way_ids).includes(:way_nodes, :way_tags)
88 # now additionally collect nodes referenced by ways. Note how we
89 # recursively evaluate ways but NOT relations.
91 way_node_ids = ways.collect do |way|
92 way.way_nodes.collect(&:node_id)
94 node_ids += way_node_ids.flatten
95 nodes = Node.where(:id => node_ids.uniq).includes(:node_tags)
101 next unless node.visible? # should be unnecessary if data is consistent.
104 visible_nodes[node.id] = node
109 next unless way.visible? # should be unnecessary if data is consistent.
115 relations.each do |rel|
116 next unless rel.visible? # should be unnecessary if data is consistent.
122 @relations << relation
125 respond_to do |format|
135 raise OSM::APIBadUserInput, "The parameter relations is required, and must be of the form relations=id[,id[,id...]]" unless params["relations"]
137 ids = params["relations"].split(",").collect(&:to_i)
139 raise OSM::APIBadUserInput, "No relations were given to search for" if ids.empty?
141 @relations = Relation.find(ids)
144 respond_to do |format|
150 def relations_for_way
151 relations_for_object("Way")
154 def relations_for_node
155 relations_for_object("Node")
158 def relations_for_relation
159 relations_for_object("Relation")
164 def relations_for_object(objtype)
165 relationids = RelationMember.where(:member_type => objtype, :member_id => params[:id]).collect(&:relation_id).uniq
169 Relation.find(relationids).each do |relation|
170 @relations << relation if relation.visible
174 respond_to do |format|