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 render :xml => relation.to_xml.to_s
35 logger.debug request.raw_post
37 relation = Relation.find(params[:id])
38 new_relation = Relation.from_xml(request.raw_post)
40 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
42 relation.update_from new_relation, current_user
43 render :plain => relation.version.to_s
47 relation = Relation.find(params[:id])
48 new_relation = Relation.from_xml(request.raw_post)
49 if new_relation && new_relation.id == relation.id
50 relation.delete_with_history!(new_relation, current_user)
51 render :plain => relation.version.to_s
57 # -----------------------------------------------------------------
60 # input parameters: id
62 # returns XML representation of one relation object plus all its
63 # members, plus all nodes part of member ways
64 # -----------------------------------------------------------------
66 relation = Relation.find(params[:id])
70 # first find the ids of nodes, ways and relations referenced by this
71 # relation - note that we exclude this relation just in case.
73 node_ids = relation.members.select { |m| m[0] == "Node" }.map { |m| m[1] }
74 way_ids = relation.members.select { |m| m[0] == "Way" }.map { |m| m[1] }
75 relation_ids = relation.members.select { |m| m[0] == "Relation" && m[1] != relation.id }.map { |m| m[1] }
77 # next load the relations and the ways.
79 relations = Relation.where(:id => relation_ids).includes(:relation_tags)
80 ways = Way.where(:id => way_ids).includes(:way_nodes, :way_tags)
82 # now additionally collect nodes referenced by ways. Note how we
83 # recursively evaluate ways but NOT relations.
85 way_node_ids = ways.collect do |way|
86 way.way_nodes.collect(&:node_id)
88 node_ids += way_node_ids.flatten
89 nodes = Node.where(:id => node_ids.uniq).includes(:node_tags)
92 doc = OSM::API.new.get_xml_doc
95 user_display_name_cache = {}
98 next unless node.visible? # should be unnecessary if data is consistent.
100 doc.root << node.to_xml_node(changeset_cache, user_display_name_cache)
101 visible_nodes[node.id] = node
105 next unless way.visible? # should be unnecessary if data is consistent.
107 doc.root << way.to_xml_node(visible_nodes, changeset_cache, user_display_name_cache)
110 relations.each do |rel|
111 next unless rel.visible? # should be unnecessary if data is consistent.
113 doc.root << rel.to_xml_node(changeset_cache, user_display_name_cache)
116 # finally add self and output
117 doc.root << relation.to_xml_node(changeset_cache, user_display_name_cache)
118 render :xml => doc.to_s
126 raise OSM::APIBadUserInput, "The parameter relations is required, and must be of the form relations=id[,id[,id...]]" unless params["relations"]
128 ids = params["relations"].split(",").collect(&:to_i)
130 raise OSM::APIBadUserInput, "No relations were given to search for" if ids.empty?
132 doc = OSM::API.new.get_xml_doc
134 Relation.find(ids).each do |relation|
135 doc.root << relation.to_xml_node
138 render :xml => doc.to_s
141 def relations_for_way
142 relations_for_object("Way")
145 def relations_for_node
146 relations_for_object("Node")
149 def relations_for_relation
150 relations_for_object("Relation")
155 def relations_for_object(objtype)
156 relationids = RelationMember.where(:member_type => objtype, :member_id => params[:id]).collect(&:relation_id).uniq
158 doc = OSM::API.new.get_xml_doc
160 Relation.find(relationids).each do |relation|
161 doc.root << relation.to_xml_node if relation.visible
164 render :xml => doc.to_s