Fix OldRelation.tags

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

diff --git a/app/models/old_way.rb b/app/models/old_way.rb
index 85cc6444766e25affdd3796c23bec7ef049e4c39..408dd72c7e93dab73f0618c2b6849ad1721b5329 100644 (file)
--- a/app/models/old_way.rb
+++ b/app/models/old_way.rb
@@ -1,9 +1,20 @@
 class OldWay < ActiveRecord::Base
   include ConsistencyValidations
-  
-  set_table_name 'ways'
+  include ObjectMetadata
+
+  self.table_name = "ways"
+  self.primary_keys = "way_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_way, :class_name => "Way", :foreign_key => "way_id"
+
+  has_many :old_nodes, :class_name => 'OldWayNode', :foreign_key => [:way_id, :version]
+  has_many :old_tags, :class_name => 'OldWayTag', :foreign_key => [:way_id, :version]
 
   validates_associated :changeset
   
@@ -12,7 +23,7 @@ class OldWay < ActiveRecord::Base
     old_way.visible = way.visible
     old_way.changeset_id = way.changeset_id
     old_way.timestamp = way.timestamp
-    old_way.id = way.id
+    old_way.way_id = way.id
     old_way.version = way.version
     old_way.nds = way.nds
     old_way.tags = way.tags
@@ -30,7 +41,7 @@ class OldWay < ActiveRecord::Base
     save!
     clear_aggregation_cache
     clear_association_cache
-    @attributes.update(OldWay.where('id = ? AND timestamp = ?', self.id, self.timestamp).order("version DESC").first.instance_variable_get('@attributes'))
+    @attributes.update(OldWay.where(:way_id => self.way_id, :timestamp => self.timestamp).order("version DESC").first.instance_variable_get('@attributes'))
 
     # ok, you can touch from here on
 
@@ -38,7 +49,7 @@ class OldWay < ActiveRecord::Base
       tag = OldWayTag.new
       tag.k = k
       tag.v = v
-      tag.id = self.id
+      tag.way_id = self.way_id
       tag.version = self.version
       tag.save!
     end
@@ -46,7 +57,7 @@ class OldWay < ActiveRecord::Base
     sequence = 1
     self.nds.each do |n|
       nd = OldWayNode.new
-      nd.id = [self.id, self.version, sequence]
+      nd.id = [self.way_id, self.version, sequence]
       nd.node_id = n
       nd.save!
       sequence += 1
@@ -55,20 +66,20 @@ class OldWay < ActiveRecord::Base
 
   def nds
     unless @nds
-        @nds = Array.new
-        OldWayNode.where("id = ? AND version = ?", self.id, self.version).order(:sequence_id).each do |nd|
-            @nds += [nd.node_id]
-        end
+      @nds = Array.new
+      self.old_nodes.order(:sequence_id).each do |nd|
+        @nds += [nd.node_id]
+      end
     end
     @nds
   end
 
   def tags
     unless @tags
-        @tags = Hash.new
-        OldWayTag.where("id = ? AND version = ?", self.id, self.version).each do |tag|
-            @tags[tag.k] = tag.v
-        end
+      @tags = Hash.new
+      self.old_tags.each do |tag|
+        @tags[tag.k] = tag.v
+      end
     end
     @tags = Hash.new unless @tags
     @tags
@@ -82,42 +93,21 @@ class OldWay < ActiveRecord::Base
     @tags = t
   end
 
-#  has_many :way_nodes, :class_name => 'OldWayNode', :foreign_key => 'id'
-#  has_many :way_tags, :class_name => 'OldWayTag', :foreign_key => 'id'
-
-  def old_nodes
-    OldWayNode.where('id = ? AND version = ?', self.id, self.version)
-  end
+  def to_xml_node(changeset_cache = {}, user_display_name_cache = {})
+    el = XML::Node.new 'way'
+    el['id'] = self.way_id.to_s
 
-  def old_tags
-    OldWayTag.where('id = ? AND version = ?', self.id, self.version)
-  end
+    add_metadata_to_xml_node(el, self, changeset_cache, user_display_name_cache)
 
-  def to_xml_node
-    el1 = XML::Node.new 'way'
-    el1['id'] = self.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
-    
     self.old_nodes.each do |nd| # FIXME need to make sure they come back in the right order
-      e = XML::Node.new 'nd'
-      e['ref'] = nd.node_id.to_s
-      el1 << e
-    end
- 
-    self.old_tags.each do |tag|
-      e = XML::Node.new 'tag'
-      e['k'] = tag.k
-      e['v'] = tag.v
-      el1 << e
+      node_el = XML::Node.new 'nd'
+      node_el['ref'] = nd.node_id.to_s
+      el << node_el
     end
-    return el1
+      
+    add_tags_to_xml_node(el, self.old_tags)
+
+    return el
   end
 
   # Read full version of old way
@@ -139,12 +129,12 @@ class OldWay < ActiveRecord::Base
   def get_nodes_revert(timestamp)
     points=[]
     self.nds.each do |n|
-      oldnode = OldNode.where('id = ? AND timestamp <= ?', n, timestamp).order("timestamp DESC").first
+      oldnode = OldNode.where('node_id = ? AND timestamp <= ?', n, timestamp).unredacted.order("timestamp DESC").first
       curnode = Node.find(n)
       id = n; reuse = curnode.visible
       if oldnode.lat != curnode.lat or oldnode.lon != curnode.lon or oldnode.tags != curnode.tags then
         # node has changed: if it's in other ways, give it a new id
-        if curnode.ways-[self.id] then id=-1; reuse=false end
+        if curnode.ways-[self.way_id] then id=-1; reuse=false end
       end
       points << [oldnode.lon, oldnode.lat, id, curnode.version, oldnode.tags_as_hash, reuse]
     end
@@ -165,4 +155,10 @@ class OldWay < 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_way.version == self.version
+  end
 end