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
28 @relations = [relation]
31 respond_to do |format|
40 logger.debug request.raw_post
42 relation = Relation.find(params[:id])
43 new_relation = Relation.from_xml(request.raw_post)
45 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
47 relation.update_from new_relation, current_user
48 render :plain => relation.version.to_s
52 relation = Relation.find(params[:id])
53 new_relation = Relation.from_xml(request.raw_post)
54 if new_relation && new_relation.id == relation.id
55 relation.delete_with_history!(new_relation, current_user)
56 render :plain => relation.version.to_s
62 # -----------------------------------------------------------------
65 # input parameters: id
67 # returns XML representation of one relation object plus all its
68 # members, plus all nodes part of member ways
69 # -----------------------------------------------------------------
71 relation = Relation.find(params[:id])
75 # first find the ids of nodes, ways and relations referenced by this
76 # relation - note that we exclude this relation just in case.
78 node_ids = relation.members.select { |m| m[0] == "Node" }.map { |m| m[1] }
79 way_ids = relation.members.select { |m| m[0] == "Way" }.map { |m| m[1] }
80 relation_ids = relation.members.select { |m| m[0] == "Relation" && m[1] != relation.id }.map { |m| m[1] }
82 # next load the relations and the ways.
84 relations = Relation.where(:id => relation_ids).includes(:relation_tags)
85 ways = Way.where(:id => way_ids).includes(:way_nodes, :way_tags)
87 # now additionally collect nodes referenced by ways. Note how we
88 # recursively evaluate ways but NOT relations.
90 way_node_ids = ways.collect do |way|
91 way.way_nodes.collect(&:node_id)
93 node_ids += way_node_ids.flatten
94 nodes = Node.where(:id => node_ids.uniq).includes(:node_tags)
97 # changeset_cache = {}
98 # user_display_name_cache = {}
102 next unless node.visible? # should be unnecessary if data is consistent.
105 visible_nodes[node.id] = node
110 next unless way.visible? # should be unnecessary if data is consistent.
116 relations.each do |rel|
117 next unless rel.visible? # should be unnecessary if data is consistent.
123 @relations << relation
126 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|
149 def relations_for_way
150 relations_for_object("Way")
153 def relations_for_node
154 relations_for_object("Node")
157 def relations_for_relation
158 relations_for_object("Relation")
163 def relations_for_object(objtype)
164 relationids = RelationMember.where(:member_type => objtype, :member_id => params[:id]).collect(&:relation_id).uniq
168 Relation.find(relationids).each do |relation|
169 @relations << relation if relation.visible
173 respond_to do |format|