2 class RelationsController < ApiController
3 before_action :check_api_writable, :only => [:create, :update, :destroy]
4 before_action :authorize, :only => [:create, :update, :destroy]
8 before_action :require_public_data, :only => [:create, :update, :destroy]
9 before_action :set_request_formats, :except => [:create, :update, :destroy]
10 before_action :check_rate_limit, :only => [:create, :update, :destroy]
13 raise OSM::APIBadUserInput, "The parameter relations is required, and must be of the form relations=id[,id[,id...]]" unless params["relations"]
15 ids = params["relations"].split(",").collect(&:to_i)
17 raise OSM::APIBadUserInput, "No relations were given to search for" if ids.empty?
19 @relations = Relation.find(ids)
22 respond_to do |format|
29 relation = Relation.find(params[:id])
31 response.last_modified = relation.timestamp unless params[:full]
39 # with parameter :full
40 # returns representation of one relation object plus all its
41 # members, plus all nodes part of member ways
43 # first find the ids of nodes, ways and relations referenced by this
44 # relation - note that we exclude this relation just in case.
46 node_ids = relation.members.select { |m| m[0] == "Node" }.pluck(1)
47 way_ids = relation.members.select { |m| m[0] == "Way" }.pluck(1)
48 relation_ids = relation.members.select { |m| m[0] == "Relation" && m[1] != relation.id }.pluck(1)
50 # next load the relations and the ways.
52 relations = Relation.where(:id => relation_ids).includes(:relation_tags)
53 ways = Way.where(:id => way_ids).includes(:way_nodes, :way_tags)
55 # now additionally collect nodes referenced by ways. Note how we
56 # recursively evaluate ways but NOT relations.
58 way_node_ids = ways.collect do |way|
59 way.way_nodes.collect(&:node_id)
61 node_ids += way_node_ids.flatten
62 nodes = Node.where(:id => node_ids.uniq).includes(:node_tags)
66 next unless node.visible? # should be unnecessary if data is consistent.
72 next unless way.visible? # should be unnecessary if data is consistent.
77 relations.each do |rel|
78 next unless rel.visible? # should be unnecessary if data is consistent.
85 @relations << relation
88 respond_to do |format|
98 relation = Relation.from_xml(request.raw_post, :create => true)
100 # Assume that Relation.from_xml has thrown an exception if there is an error parsing the xml
101 relation.create_with_history current_user
102 render :plain => relation.id.to_s
106 relation = Relation.find(params[:id])
107 new_relation = Relation.from_xml(request.raw_post)
109 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
111 relation.update_from new_relation, current_user
112 render :plain => relation.version.to_s
116 relation = Relation.find(params[:id])
117 new_relation = Relation.from_xml(request.raw_post)
118 if new_relation && new_relation.id == relation.id
119 relation.delete_with_history!(new_relation, current_user)
120 render :plain => relation.version.to_s
126 def relations_for_relation
127 relations_for_object("Relation")
132 def relations_for_object(objtype)
133 relationids = RelationMember.where(:member_type => objtype, :member_id => params[:id]).collect(&:relation_id).uniq
137 Relation.find(relationids).each do |relation|
138 @relations << relation if relation.visible
142 respond_to do |format|