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
19 relation.user_id = @user.id
20 relation.save_with_history!
22 render :text => relation.id.to_s, :content_type => "text/plain"
25 render :nothing => true, :status => :bad_request
28 render :nothing => true, :status => :method_not_allowed
34 relation = Relation.find(params[:id])
35 response.headers['Last-Modified'] = relation.timestamp.rfc822
37 render :text => relation.to_xml.to_s, :content_type => "text/xml"
39 render :text => "", :status => :gone
41 rescue ActiveRecord::RecordNotFound
42 render :nothing => true, :status => :not_found
44 render :nothing => true, :status => :internal_server_error
50 relation = Relation.find(params[:id])
51 new_relation = Relation.from_xml(request.raw_post)
53 if new_relation and new_relation.id == relation.id
54 if !new_relation.preconditions_ok?
55 render :text => "", :status => :precondition_failed
57 relation.user_id = @user.id
58 relation.tags = new_relation.tags
59 relation.members = new_relation.members
60 relation.visible = true
61 relation.save_with_history!
63 render :nothing => true
66 render :nothing => true, :status => :bad_request
68 rescue ActiveRecord::RecordNotFound
69 render :nothing => true, :status => :not_found
71 render :nothing => true, :status => :internal_server_error
76 #XXX check if member somewhere!
78 relation = Relation.find(params[:id])
81 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]])
82 render :text => "", :status => :precondition_failed
84 relation.user_id = @user.id
87 relation.visible = false
88 relation.save_with_history!
90 render :nothing => true
93 render :text => "", :status => :gone
95 rescue ActiveRecord::RecordNotFound
96 render :nothing => true, :status => :not_found
98 render :nothing => true, :status => :internal_server_error
102 # -----------------------------------------------------------------
105 # input parameters: id
107 # returns XML representation of one relation object plus all its
108 # members, plus all nodes part of member ways
109 # -----------------------------------------------------------------
112 relation = Relation.find(params[:id])
116 # first collect nodes, ways, and relations referenced by this relation.
118 ways = Way.find_by_sql("select w.* from current_ways w,current_relation_members rm where "+
119 "rm.member_type='way' and rm.member_id=w.id and rm.id=#{relation.id}");
120 nodes = Node.find_by_sql("select n.* from current_nodes n,current_relation_members rm where "+
121 "rm.member_type='node' and rm.member_id=n.id and rm.id=#{relation.id}");
122 # note query is built to exclude self just in case.
123 relations = Relation.find_by_sql("select r.* from current_relations r,current_relation_members rm where "+
124 "rm.member_type='relation' and rm.member_id=r.id and rm.id=#{relation.id} and r.id<>rm.id");
126 # now additionally collect nodes referenced by ways. Note how we recursively
127 # evaluate ways but NOT relations.
129 node_ids = nodes.collect {|node| node.id }
130 way_node_ids = ways.collect { |way|
131 way.way_nodes.collect { |way_node| way_node.node_id }
133 way_node_ids.flatten!
135 way_node_ids -= node_ids
136 nodes += Node.find(way_node_ids)
139 doc = OSM::API.new.get_xml_doc
141 user_display_name_cache = {}
144 if node.visible? # should be unnecessary if data is consistent.
145 doc.root << node.to_xml_node(user_display_name_cache)
146 visible_nodes[node.id] = node
150 if way.visible? # should be unnecessary if data is consistent.
151 doc.root << way.to_xml_node(visible_nodes, user_display_name_cache)
154 relations.each do |rel|
155 if rel.visible? # should be unnecessary if data is consistent.
156 doc.root << rel.to_xml_node(user_display_name_cache)
159 # finally add self and output
160 doc.root << relation.to_xml_node(user_display_name_cache)
161 render :text => doc.to_s, :content_type => "text/xml"
165 render :text => "", :status => :gone
168 rescue ActiveRecord::RecordNotFound
169 render :nothing => true, :status => :not_found
172 render :nothing => true, :status => :internal_server_error
177 ids = params['relations'].split(',').collect { |w| w.to_i }
180 doc = OSM::API.new.get_xml_doc
182 Relation.find(ids).each do |relation|
183 doc.root << relation.to_xml_node
186 render :text => doc.to_s, :content_type => "text/xml"
188 render :nothing => true, :status => :bad_request
192 def relations_for_way
193 relations_for_object("way")
195 def relations_for_node
196 relations_for_object("node")
198 def relations_for_relation
199 relations_for_object("relation")
202 def relations_for_object(objtype)
203 relationids = RelationMember.find(:all, :conditions => ['member_type=? and member_id=?', objtype, params[:id]]).collect { |ws| ws.id }.uniq
205 doc = OSM::API.new.get_xml_doc
207 Relation.find(relationids).each do |relation|
208 doc.root << relation.to_xml_node
211 render :text => doc.to_s, :content_type => "text/xml"