Bring some sort of sanity to sequence numbers for segments in a

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

diff --git a/app/models/old_way.rb b/app/models/old_way.rb
index 1aac4ebff8e7736117aa0b8d5e9c0911a1a5b13d..e4df258167ca3b7f4fff49b42f014cef4d63b6c5 100644 (file)
--- a/app/models/old_way.rb
+++ b/app/models/old_way.rb
@@ -5,6 +5,7 @@ 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
@@ -13,43 +14,57 @@ class OldWay < ActiveRecord::Base
     return old_way
   end
 
-  def save
-    t = Time.now
-    self.timestamp = t
-    self.save
-    
-    WayTag.delete_all(['id = ?', self.id])
+  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 = WayTag.new
+      tag = OldWayTag.new
       tag.k = k
       tag.v = v
       tag.id = self.id
-      tag.save
+      tag.version = self.version
+      tag.save!
     end
 
-    WaySegment.delete_all(['id = ?', self.id])
-    
-    i = 0
+    i = 1
     self.segs.each do |n|
-      seg = WaySegment.new
+      seg = OldWaySegment.new
       seg.id = self.id
       seg.segment_id = n
-      seg.sequence_id = i
-      seg.save
-      i += 1
+      seg.version = self.version
+      seg.save!
     end
-
-    old_way = OldWay.from_way(self)
-    old_way.save
   end
 
   def segs
-    @segs = Array.new unless @segs
+    unless @segs
+        @segs = Array.new
+        OldWaySegment.find(:all, :conditions => ["id = ? AND version = ?", self.id, self.version], :order => "sequence_id").each do |seg|
+            @segs += [seg.segment_id]
+        end
+    end
     @segs
   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
@@ -62,4 +77,36 @@ class OldWay < ActiveRecord::Base
     @tags = t
   end
 
+#  has_many :way_segments, :class_name => 'OldWaySegment', :foreign_key => 'id'
+#  has_many :way_tags, :class_name => 'OldWayTag', :foreign_key => 'id'
+
+  def old_segments
+    OldWaySegment.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_segments.each do |seg| # FIXME need to make sure they come back in the right order
+      e = XML::Node.new 'seg'
+      e['id'] = seg.segment_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