1 class RelationController < ApplicationController
5 before_filter :authorize, :only => [:create, :update, :delete]
6 before_filter :check_write_availability, :only => [:create, :update, :delete]
7 before_filter :check_read_availability, :except => [:create, :update, :delete]
8 after_filter :compress_output
12 relation = Relation.from_xml(request.raw_post, true)
15 if !relation.preconditions_ok?
16 render :text => "", :status => :precondition_failed
18 relation.user_id = @user.id
19 relation.save_with_history!
21 render :text => relation.id.to_s, :content_type => "text/plain"
24 render :nothing => true, :status => :bad_request
27 render :nothing => true, :status => :method_not_allowed
33 relation = Relation.find(params[:id])
36 render :text => relation.to_xml.to_s, :content_type => "text/xml"
38 render :text => "", :status => :gone
40 rescue ActiveRecord::RecordNotFound
41 render :nothing => true, :status => :not_found
43 render :nothing => true, :status => :internal_server_error
49 relation = Relation.find(params[:id])
52 new_relation = Relation.from_xml(request.raw_post)
54 if new_relation and new_relation.id == relation.id
55 if !new_relation.preconditions_ok?
56 render :text => "", :status => :precondition_failed
58 relation.user_id = @user.id
59 relation.tags = new_relation.tags
60 relation.members = new_relation.members
61 relation.visible = true
62 relation.save_with_history!
64 render :nothing => true
67 render :nothing => true, :status => :bad_request
70 render :text => "", :status => :gone
72 rescue ActiveRecord::RecordNotFound
73 render :nothing => true, :status => :not_found
75 render :nothing => true, :status => :internal_server_error
80 #XXX check if member somewhere!
82 relation = Relation.find(params[:id])
85 if RelationMember.find(:first, :joins => "INNER JOIN current_relations ON current_relations.id=current_relation_members.id", :conditions => [ "visible = 1 AND member_type='relation' and member_id=?", params[:id]])
86 render :text => "", :status => :precondition_failed
88 relation.user_id = @user.id
91 relation.visible = false
92 relation.save_with_history!
94 render :nothing => true
97 render :text => "", :status => :gone
99 rescue ActiveRecord::RecordNotFound
100 render :nothing => true, :status => :not_found
102 render :nothing => true, :status => :internal_server_error
106 # -----------------------------------------------------------------
109 # input parameters: id
111 # returns XML representation of one relation object plus all its
112 # members, plus all nodes part of member ways
113 # -----------------------------------------------------------------
116 relation = Relation.find(params[:id])
120 # first collect nodes, ways, and relations referenced by this relation.
122 ways = Way.find_by_sql("select w.* from current_ways w,current_relation_members rm where "+
123 "rm.member_type='way' and rm.member_id=w.id and rm.id=#{relation.id}");
124 nodes = Node.find_by_sql("select n.* from current_nodes n,current_relation_members rm where "+
125 "rm.member_type='node' and rm.member_id=n.id and rm.id=#{relation.id}");
126 # note query is built to exclude self just in case.
127 relations = Relation.find_by_sql("select r.* from current_relations r,current_relation_members rm where "+
128 "rm.member_type='relation' and rm.member_id=r.id and rm.id=#{relation.id} and r.id<>rm.id");
130 # now additionally collect nodes referenced by ways. Note how we recursively
131 # evaluate ways but NOT relations.
133 node_ids = nodes.collect {|node| node.id }
134 way_node_ids = ways.collect { |way|
135 way.way_nodes.collect { |way_node| way_node.node_id }
137 way_node_ids.flatten!
139 way_node_ids -= node_ids
140 nodes += Node.find(way_node_ids)
143 doc = OSM::API.new.get_xml_doc
145 user_display_name_cache = {}
148 if node.visible? # should be unnecessary if data is consistent.
149 doc.root << node.to_xml_node(user_display_name_cache)
150 visible_nodes[node.id] = node
154 if way.visible? # should be unnecessary if data is consistent.
155 doc.root << way.to_xml_node(visible_nodes, user_display_name_cache)
158 relations.each do |rel|
159 if rel.visible? # should be unnecessary if data is consistent.
160 doc.root << rel.to_xml_node(user_display_name_cache)
163 # finally add self and output
164 doc.root << relation.to_xml_node(user_display_name_cache)
165 render :text => doc.to_s, :content_type => "text/xml"
169 render :text => "", :status => :gone
172 rescue ActiveRecord::RecordNotFound
173 render :nothing => true, :status => :not_found
176 render :nothing => true, :status => :internal_server_error
181 ids = params['relations'].split(',').collect { |w| w.to_i }
184 doc = OSM::API.new.get_xml_doc
186 Relation.find(ids).each do |relation|
187 doc.root << relation.to_xml_node
190 render :text => doc.to_s, :content_type => "text/xml"
192 render :nothing => true, :status => :bad_request
196 def relations_for_way
197 relations_for_object("way")
199 def relations_for_node
200 relations_for_object("node")
202 def relations_for_relation
203 relations_for_object("relation")
206 def relations_for_object(objtype)
207 relationids = RelationMember.find(:all, :conditions => ['member_type=? and member_id=?', objtype, params[:id]]).collect { |ws| ws.id }.uniq
209 if relationids.length > 0
210 doc = OSM::API.new.get_xml_doc
212 Relation.find(relationids).each do |relation|
213 doc.root << relation.to_xml_node
216 render :text => doc.to_s, :content_type => "text/xml"
218 render :nothing => true, :status => :not_found