X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/52e5fa6ad78f375cec5a207a123a4aa3939c8ddf..bc67479bccbd09b6f6279224e549d5142fc800a0:/app/models/old_relation.rb

diff --git a/app/models/old_relation.rb b/app/models/old_relation.rb
index 87771caab..dc89afa50 100644
--- a/app/models/old_relation.rb
+++ b/app/models/old_relation.rb
@@ -1,12 +1,19 @@
 class OldRelation < ActiveRecord::Base
   include ConsistencyValidations
+  include ObjectMetadata
   
-  set_table_name 'relations'
-  set_primary_keys :relation_id, :version
+  self.table_name = "relations"
+  self.primary_keys = "relation_id", "version"
+
+  # note this needs to be included after the table name changes, or
+  # the queries generated by Redactable will use the wrong table name.
+  include Redactable
 
   belongs_to :changeset
+  belongs_to :redaction
+  belongs_to :current_relation, :class_name => "Relation", :foreign_key => "relation_id"
 
-  has_many :old_members, :class_name => 'OldRelationMember', :foreign_key => [:relation_id, :version], :order => :sequence_id
+  has_many :old_members, -> { order(:sequence_id) }, :class_name => 'OldRelationMember', :foreign_key => [:relation_id, :version]
   has_many :old_tags, :class_name => 'OldRelationTag', :foreign_key => [:relation_id, :version]
   
   validates_associated :changeset
@@ -53,24 +60,13 @@ class OldRelation < ActiveRecord::Base
   end
 
   def members
-    unless @members
-      @members = Array.new
-      OldRelationMember.where(:relation_id => self.relation_id, :version => self.version).order(:sequence_id).each do |m|
-        @members += [[m.type,m.id,m.role]]
-      end
+    @members ||= self.old_members.collect do |member|
+      [member.member_type, member.member_id, member.member_role]
     end
-    @members
   end
 
   def tags
-    unless @tags
-      @tags = Hash.new
-      OldRelationTag.where(:relation_id => self.relation_id, :version => self.version).each do |tag|
-        @tags[tag.k] = tag.v
-      end
-    end
-    @tags = Hash.new unless @tags
-    @tags
+    @tags ||= Hash[self.old_tags.collect { |t| [t.k, t.v] }]
   end
 
   def members=(s)
@@ -87,33 +83,23 @@ class OldRelation < ActiveRecord::Base
     return doc
   end
 
-  def to_xml_node
-    el1 = XML::Node.new 'relation'
-    el1['id'] = self.relation_id.to_s
-    el1['visible'] = self.visible.to_s
-    el1['timestamp'] = self.timestamp.xmlschema
-    if self.changeset.user.data_public?
-      el1['user'] = self.changeset.user.display_name
-      el1['uid'] = self.changeset.user.id.to_s
-    end
-    el1['version'] = self.version.to_s
-    el1['changeset'] = self.changeset_id.to_s
-    
+  def to_xml_node(changeset_cache = {}, user_display_name_cache = {})
+    el = XML::Node.new 'relation'
+    el['id'] = self.relation_id.to_s
+
+    add_metadata_to_xml_node(el, self, changeset_cache, user_display_name_cache)
+
     self.old_members.each do |member|
-      e = XML::Node.new 'member'
-      e['type'] = member.member_type.to_s.downcase
-      e['ref'] = member.member_id.to_s # "id" is considered uncool here as it should be unique in XML
-      e['role'] = member.member_role.to_s
-      el1 << e
+      member_el = XML::Node.new 'member'
+      member_el['type'] = member.member_type.to_s.downcase
+      member_el['ref'] = member.member_id.to_s # "id" is considered uncool here as it should be unique in XML
+      member_el['role'] = member.member_role.to_s
+      el << member_el
     end
- 
-    self.old_tags.each do |tag|
-      e = XML::Node.new 'tag'
-      e['k'] = tag.k
-      e['v'] = tag.v
-      el1 << e
-    end
-    return el1
+    
+    add_tags_to_xml_node(el, self.old_tags)
+
+    return el
   end
 
   # Temporary method to match interface to nodes
@@ -130,4 +116,10 @@ class OldRelation < ActiveRecord::Base
   def containing_relation_members
     return []
   end
+
+  # check whether this element is the latest version - that is,
+  # has the same version as its "current" counterpart.
+  def is_latest_version?
+    current_relation.version == self.version
+  end
 end