1 class RelationController < ApplicationController
4 before_filter :authorize, :only => [:create, :update, :delete]
5 before_filter :check_availability, :only => [:create, :update, :delete]
7 after_filter :compress_output
11 relation = Relation.from_xml(request.raw_post, true)
14 if !relation.preconditions_ok?
15 render :nothing => true, :status => :precondition_failed
17 relation.user_id = @user.id
19 if relation.save_with_history
20 render :text => relation.id.to_s, :content_type => "text/plain"
22 render :text => "save error", :status => :internal_server_error
26 render :nothing => true, :status => :bad_request
29 render :nothing => true, :status => :method_not_allowed
35 relation = Relation.find(params[:id])
38 render :text => relation.to_xml.to_s, :content_type => "text/xml"
40 render :nothing => true, :status => :gone
42 rescue ActiveRecord::RecordNotFound
43 render :nothing => true, :status => :not_found
45 render :nothing => true, :status => :internal_server_error
51 relation = Relation.find(params[:id])
54 new_relation = Relation.from_xml(request.raw_post)
56 if new_relation and new_relation.id == relation.id
57 if !new_relation.preconditions_ok?
58 render :nothing => true, :status => :precondition_failed
60 relation.user_id = @user.id
61 relation.tags = new_relation.tags
62 relation.members = new_relation.members
63 relation.visible = true
65 if relation.save_with_history
66 render :nothing => true
68 render :nothing => true, :status => :internal_server_error
72 render :nothing => true, :status => :bad_request
75 render :nothing => true, :status => :gone
77 rescue ActiveRecord::RecordNotFound
78 render :nothing => true, :status => :not_found
80 render :nothing => true, :status => :internal_server_error
85 #XXX check if member somewhere!
87 relation = Relation.find(params[:id])
90 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]])
91 render :nothing => true, :status => :precondition_failed
93 relation.user_id = @user.id
96 relation.visible = false
98 if relation.save_with_history
99 render :nothing => true
101 render :nothing => true, :status => :internal_server_error
105 render :nothing => true, :status => :gone
107 rescue ActiveRecord::RecordNotFound
108 render :nothing => true, :status => :not_found
110 render :nothing => true, :status => :internal_server_error
114 # -----------------------------------------------------------------
117 # input parameters: id
119 # returns XML representation of one relation object plus all its
120 # members, plus all nodes part of member ways
121 # -----------------------------------------------------------------
124 relation = Relation.find(params[:id])
128 # first collect nodes, ways, and relations referenced by this relation.
130 ways = Way.find_by_sql("select w.* from current_ways w,current_relation_members rm where "+
131 "rm.member_type='way' and rm.member_id=w.id and rm.id=#{relation.id}");
132 nodes = Node.find_by_sql("select n.* from current_nodes n,current_relation_members rm where "+
133 "rm.member_type='node' and rm.member_id=n.id and rm.id=#{relation.id}");
134 # note query is built to exclude self just in case.
135 relations = Relation.find_by_sql("select r.* from current_relations r,current_relation_members rm where "+
136 "rm.member_type='relation' and rm.member_id=r.id and rm.id=#{relation.id} and r.id<>rm.id");
138 # now additionally collect nodes referenced by ways. Note how we recursively
139 # evaluate ways but NOT relations.
141 node_ids = nodes.collect {|node| node.id }
142 way_node_ids = ways.collect { |way|
143 way.way_nodes.collect { |way_node| way_node.node_id }
145 way_node_ids.flatten!
147 way_node_ids -= node_ids
148 nodes += Node.find(way_node_ids)
151 doc = OSM::API.new.get_xml_doc
152 user_display_name_cache = {}
155 if node.visible? # should be unnecessary if data is consistent.
156 doc.root << node.to_xml_node(user_display_name_cache)
160 if way.visible? # should be unnecessary if data is consistent.
161 doc.root << way.to_xml_node(user_display_name_cache)
164 relations.each do |rel|
165 if rel.visible? # should be unnecessary if data is consistent.
166 doc.root << rel.to_xml_node(user_display_name_cache)
169 # finally add self and output
170 doc.root << relation.to_xml_node(user_display_name_cache)
171 render :text => doc.to_s, :content_type => "text/xml"
175 render :nothing => true, :status => :gone
178 rescue ActiveRecord::RecordNotFound
179 render :nothing => true, :status => :not_found
182 render :nothing => true, :status => :internal_server_error
187 ids = params['relations'].split(',').collect { |w| w.to_i }
190 doc = OSM::API.new.get_xml_doc
192 Relation.find(ids).each do |relation|
193 doc.root << relation.to_xml_node
196 render :text => doc.to_s, :content_type => "text/xml"
198 render :nothing => true, :status => :bad_request
202 def relations_for_way
203 relations_for_object("way")
205 def relations_for_node
206 relations_for_object("node")
208 def relations_for_relation
209 relations_for_object("relation")
212 def relations_for_object(objtype)
213 relationids = RelationMember.find(:all, :conditions => ['member_type=? and member_id=?', objtype, params[:id]]).collect { |ws| ws.id }.uniq
215 if relationids.length > 0
216 doc = OSM::API.new.get_xml_doc
218 Relation.find(relationids).each do |relation|
219 doc.root << relation.to_xml_node
222 render :text => doc.to_s, :content_type => "text/xml"
224 render :nothing => true, :status => :not_found