destroy the feature when we leave

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

diff --git a/app/models/old_way.rb b/app/models/old_way.rb
index 3f978d3d407ad88ca44bcaf7d9586c61ddbd8db9..a2b165e42716f5cfa7f095aa76654616274f95b5 100644 (file)
--- a/app/models/old_way.rb
+++ b/app/models/old_way.rb
@@ -5,10 +5,108 @@ class OldWay < ActiveRecord::Base
 
   def self.from_way(way)
     old_way = OldWay.new
+    old_way.visible = way.visible
     old_way.user_id = way.user_id
     old_way.timestamp = way.timestamp
     old_way.id = way.id
+    old_way.nds = way.nds
+    old_way.tags = way.tags
     return old_way
   end
 
+  def save_with_dependencies!
+
+    # dont touch this unless you really have figured out why it's called
+    # (Rails doesn't deal well with the old ways table (called 'ways') because
+    # it doesn't have a unique key. It knows how to insert and auto_increment
+    # id and get it back but we have that and we want to get the 'version' back
+    # we could add another column but thats a lot of data. No, set_primary_key
+    # doesn't work either.
+    save!
+    clear_aggregation_cache
+    clear_association_cache
+    @attributes.update(OldWay.find(:first, :conditions => ['id = ? AND timestamp = ?', self.id, self.timestamp]).instance_variable_get('@attributes'))
+
+    # ok, you can touch from here on
+
+    self.tags.each do |k,v|
+      tag = OldWayTag.new
+      tag.k = k
+      tag.v = v
+      tag.id = self.id
+      tag.version = self.version
+      tag.save!
+    end
+
+    sequence = 1
+    self.nds.each do |n|
+      nd = OldWayNode.new
+      nd.id = [self.id, self.version, sequence]
+      nd.node_id = n
+      nd.save!
+      sequence += 1
+    end
+  end
+
+  def nds
+    unless @nds
+        @nds = Array.new
+        OldWayNode.find(:all, :conditions => ["id = ? AND version = ?", self.id, self.version], :order => "sequence_id").each do |nd|
+            @nds += [nd.node_id]
+        end
+    end
+    @nds
+  end
+
+  def tags
+    unless @tags
+        @tags = Hash.new
+        OldWayTag.find(:all, :conditions => ["id = ? AND version = ?", self.id, self.version]).each do |tag|
+            @tags[tag.k] = tag.v
+        end
+    end
+    @tags = Hash.new unless @tags
+    @tags
+  end
+
+  def nds=(s)
+    @nds = s
+  end
+
+  def tags=(t)
+    @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.find(:all, :conditions => ['id = ? AND version = ?', self.id, self.version])    
+  end
+
+  def old_tags
+    OldWayTag.find(:all, :conditions => ['id = ? AND version = ?', self.id, self.version])    
+  end
+
+  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
+    el1['user'] = self.user.display_name if self.user.data_public?
+    
+    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
+    end
+    return el1
+  end 
 end