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])
50 new_relation = Relation.from_xml(request.raw_post)
52 if new_relation and new_relation.id == relation.id
53 if !new_relation.preconditions_ok?
54 render :text => "", :status => :precondition_failed
56 relation.user_id = @user.id
57 relation.tags = new_relation.tags
58 relation.members = new_relation.members
59 relation.visible = true
60 relation.save_with_history!
62 render :nothing => true
65 render :nothing => true, :status => :bad_request
67 rescue ActiveRecord::RecordNotFound
68 render :nothing => true, :status => :not_found
70 render :nothing => true, :status => :internal_server_error
75 #XXX check if member somewhere!
77 relation = Relation.find(params[:id])
80 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]])
81 render :text => "", :status => :precondition_failed
83 relation.user_id = @user.id
86 relation.visible = false
87 relation.save_with_history!
89 render :nothing => true
92 render :text => "", :status => :gone
94 rescue ActiveRecord::RecordNotFound
95 render :nothing => true, :status => :not_found
97 render :nothing => true, :status => :internal_server_error
101 # -----------------------------------------------------------------
104 # input parameters: id
106 # returns XML representation of one relation object plus all its
107 # members, plus all nodes part of member ways
108 # -----------------------------------------------------------------
111 relation = Relation.find(params[:id])
115 # first collect nodes, ways, and relations referenced by this relation.
117 ways = Way.find_by_sql("select w.* from current_ways w,current_relation_members rm where "+
118 "rm.member_type='way' and rm.member_id=w.id and rm.id=#{relation.id}");
119 nodes = Node.find_by_sql("select n.* from current_nodes n,current_relation_members rm where "+
120 "rm.member_type='node' and rm.member_id=n.id and rm.id=#{relation.id}");
121 # note query is built to exclude self just in case.
122 relations = Relation.find_by_sql("select r.* from current_relations r,current_relation_members rm where "+
123 "rm.member_type='relation' and rm.member_id=r.id and rm.id=#{relation.id} and r.id<>rm.id");
125 # now additionally collect nodes referenced by ways. Note how we recursively
126 # evaluate ways but NOT relations.
128 node_ids = nodes.collect {|node| node.id }
129 way_node_ids = ways.collect { |way|
130 way.way_nodes.collect { |way_node| way_node.node_id }
132 way_node_ids.flatten!
134 way_node_ids -= node_ids
135 nodes += Node.find(way_node_ids)
138 doc = OSM::API.new.get_xml_doc
140 user_display_name_cache = {}
143 if node.visible? # should be unnecessary if data is consistent.
144 doc.root << node.to_xml_node(user_display_name_cache)
145 visible_nodes[node.id] = node
149 if way.visible? # should be unnecessary if data is consistent.
150 doc.root << way.to_xml_node(visible_nodes, user_display_name_cache)
153 relations.each do |rel|
154 if rel.visible? # should be unnecessary if data is consistent.
155 doc.root << rel.to_xml_node(user_display_name_cache)
158 # finally add self and output
159 doc.root << relation.to_xml_node(user_display_name_cache)
160 render :text => doc.to_s, :content_type => "text/xml"
164 render :text => "", :status => :gone
167 rescue ActiveRecord::RecordNotFound
168 render :nothing => true, :status => :not_found
171 render :nothing => true, :status => :internal_server_error
176 ids = params['relations'].split(',').collect { |w| w.to_i }
179 doc = OSM::API.new.get_xml_doc
181 Relation.find(ids).each do |relation|
182 doc.root << relation.to_xml_node
185 render :text => doc.to_s, :content_type => "text/xml"
187 render :nothing => true, :status => :bad_request
191 def relations_for_way
192 relations_for_object("way")
194 def relations_for_node
195 relations_for_object("node")
197 def relations_for_relation
198 relations_for_object("relation")
201 def relations_for_object(objtype)
202 relationids = RelationMember.find(:all, :conditions => ['member_type=? and member_id=?', objtype, params[:id]]).collect { |ws| ws.id }.uniq
204 if relationids.length > 0
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"
213 render :nothing => true, :status => :not_found