Added optional using records from notes table

Added using records (description, user_id, user_ip) from notes table if migration is done, otherwise, use values from note's first comment.

app/models/note.rb

@@ -84,14 +84,48 @@ def freshly_closed_until
     closed_at + DEFAULT_FRESHLY_CLOSED_LIMIT
   end
 
-  # Return the author object, derived from the first comment
+  # Return the note's description,
+  # derived from the first comment if migration is not performed,
+  # otherwise from DB record
+  def description
+    if self[:user_id].nil? && self[:user_ip].nil?
+      comments.first.body
+    else
+      RichText.new("text", self[:description])
+    end
+  end
+
+  # Return the note's author object,
+  # derived from the first comment if migration is not performed,
+  # otherwise using appropriate DB record
   def author
-    comments.first.author
+    if self[:user_id].nil? && self[:user_ip].nil?
+      comments.first.author
+    else
+      author
+    end
+  end
+
+  # Return the note's author ID,
+  # derived from the first comment if migration is not performed,
+  # otherwise from DB record
+  def author_id
+    if self[:user_id].nil? && self[:user_ip].nil?
+      comments.first.author_id
+    else
+      self[:user_id]
+    end
   end
 
-  # Return the author IP address, derived from the first comment
+  # Return the note's author IP address,
+  # derived from the first comment if migration is not performed,
+  # otherwise from DB record
   def author_ip
-    comments.first.author_ip
+    if self[:user_id].nil? && self[:user_ip].nil?
+      comments.first.author_ip
+    else
+      self[:user_ip]
+    end
   end
 
   private