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]
17 raise OSM::APIBadUserInput, "The parameter relations is required, and must be of the form relations=id[,id[,id...]]" unless params["relations"]
19 ids = params["relations"].split(",").collect(&:to_i)
21 raise OSM::APIBadUserInput, "No relations were given to search for" if ids.empty?
23 @relations = Relation.find(ids)
26 respond_to do |format|
33 @relation = Relation.find(params[:id])
34 response.last_modified = @relation.timestamp
37 respond_to do |format|
49 relation = Relation.from_xml(request.raw_post, :create => true)
51 # Assume that Relation.from_xml has thrown an exception if there is an error parsing the xml
52 relation.create_with_history current_user
53 render :plain => relation.id.to_s
57 logger.debug request.raw_post
59 relation = Relation.find(params[:id])
60 new_relation = Relation.from_xml(request.raw_post)
62 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
64 relation.update_from new_relation, current_user
65 render :plain => relation.version.to_s
69 relation = Relation.find(params[:id])
70 new_relation = Relation.from_xml(request.raw_post)
71 if new_relation && new_relation.id == relation.id
72 relation.delete_with_history!(new_relation, current_user)
73 render :plain => relation.version.to_s
79 # -----------------------------------------------------------------
82 # input parameters: id
84 # returns XML representation of one relation object plus all its
85 # members, plus all nodes part of member ways
86 # -----------------------------------------------------------------
88 relation = Relation.find(params[:id])
92 # first find the ids of nodes, ways and relations referenced by this
93 # relation - note that we exclude this relation just in case.
95 node_ids = relation.members.select { |m| m[0] == "Node" }.pluck(1)
96 way_ids = relation.members.select { |m| m[0] == "Way" }.pluck(1)
97 relation_ids = relation.members.select { |m| m[0] == "Relation" && m[1] != relation.id }.pluck(1)
99 # next load the relations and the ways.
101 relations = Relation.where(:id => relation_ids).includes(:relation_tags)
102 ways = Way.where(:id => way_ids).includes(:way_nodes, :way_tags)
104 # now additionally collect nodes referenced by ways. Note how we
105 # recursively evaluate ways but NOT relations.
107 way_node_ids = ways.collect do |way|
108 way.way_nodes.collect(&:node_id)
110 node_ids += way_node_ids.flatten
111 nodes = Node.where(:id => node_ids.uniq).includes(:node_tags)
117 next unless node.visible? # should be unnecessary if data is consistent.
120 visible_nodes[node.id] = node
125 next unless way.visible? # should be unnecessary if data is consistent.
131 relations.each do |rel|
132 next unless rel.visible? # should be unnecessary if data is consistent.
138 @relations << relation
141 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|