Expose redactions through the node history API calls

[rails.git] / app / models / old_relation.rb

diff --git a/app/models/old_relation.rb b/app/models/old_relation.rb
index bac03c4d2eff6811a9dc4b5d2c32e3bb988e76b3..e4be8fc7fd168c3433c44910e894662c0870e547 100644 (file)
--- a/app/models/old_relation.rb
+++ b/app/models/old_relation.rb
@@ -1,14 +1,26 @@
 class OldRelation < ActiveRecord::Base
-  set_table_name 'relations'
+  include ConsistencyValidations
+  include Redactable
+  
+  self.table_name = "relations"
+  self.primary_keys = "relation_id", "version"
 
-  belongs_to :user
+  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_tags, :class_name => 'OldRelationTag', :foreign_key => [:relation_id, :version]
+  
+  validates_associated :changeset
 
   def self.from_relation(relation)
     old_relation = OldRelation.new
     old_relation.visible = relation.visible
-    old_relation.user_id = relation.user_id
+    old_relation.changeset_id = relation.changeset_id
     old_relation.timestamp = relation.timestamp
-    old_relation.id = relation.id
+    old_relation.relation_id = relation.id
+    old_relation.version = relation.version
     old_relation.members = relation.members
     old_relation.tags = relation.tags
     return old_relation
@@ -20,7 +32,7 @@ class OldRelation < ActiveRecord::Base
     save!
     clear_aggregation_cache
     clear_association_cache
-    @attributes.update(OldRelation.find(:first, :conditions => ['id = ? AND timestamp = ?', self.id, self.timestamp]).instance_variable_get('@attributes'))
+    @attributes.update(OldRelation.where(:relation_id => self.relation_id, :timestamp => self.timestamp).order("version DESC").first.instance_variable_get('@attributes'))
 
     # ok, you can touch from here on
 
@@ -28,39 +40,37 @@ class OldRelation < ActiveRecord::Base
       tag = OldRelationTag.new
       tag.k = k
       tag.v = v
-      tag.id = self.id
+      tag.relation_id = self.relation_id
       tag.version = self.version
       tag.save!
     end
 
-    i = 1
-    self.members.each do |m|
+    self.members.each_with_index do |m,i|
       member = OldRelationMember.new
-      member.id = self.id
-      member.member_type = m[0]
+      member.id = [self.relation_id, self.version, i]
+      member.member_type = m[0].classify
       member.member_id = m[1]
       member.member_role = m[2]
-      member.version = self.version
       member.save!
     end
   end
 
   def members
     unless @members
-        @members = Array.new
-        OldRelationMember.find(:all, :conditions => ["id = ? AND version = ?", self.id, self.version]).each do |m|
-            @members += [[m.type,m.id,m.role]]
-        end
+      @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
     end
     @members
   end
 
   def tags
     unless @tags
-        @tags = Hash.new
-        OldRelationTag.find(:all, :conditions => ["id = ? AND version = ?", self.id, self.version]).each do |tag|
-            @tags[tag.k] = tag.v
-        end
+      @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
@@ -74,27 +84,27 @@ class OldRelation < ActiveRecord::Base
     @tags = t
   end
 
-#  has_many :relation_segments, :class_name => 'OldRelationSegment', :foreign_key => 'id'
-#  has_many :relation_tags, :class_name => 'OldRelationTag', :foreign_key => 'id'
-
-  def old_members
-    OldRelationMember.find(:all, :conditions => ['id = ? AND version = ?', self.id, self.version])    
-  end
-
-  def old_tags
-    OldRelationTag.find(:all, :conditions => ['id = ? AND version = ?', self.id, self.version])    
+  def to_xml
+    doc = OSM::API.new.get_xml_doc
+    doc.root << to_xml_node()
+    return doc
   end
 
   def to_xml_node
     el1 = XML::Node.new 'relation'
-    el1['id'] = self.id.to_s
+    el1['id'] = self.relation_id.to_s
     el1['visible'] = self.visible.to_s
     el1['timestamp'] = self.timestamp.xmlschema
-    el1['user'] = self.user.display_name if self.user.data_public?
+    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
     
     self.old_members.each do |member|
       e = XML::Node.new 'member'
-      e['type'] = member.member_type.to_s
+      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
@@ -123,4 +133,10 @@ 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