Added example.

OnlineEditorsExample/OnlineEditorsExampleRuby/app/models/file_model.rb

@@ -0,0 +1,40 @@
+class FileModel
+
+  attr_accessor :file_name, :mode, :user_ip
+
+  def initialize(attributes = {})
+    @file_name = attributes[:file_name]
+    @mode = attributes[:mode]
+    @user_ip = attributes[:user_ip]
+  end
+
+  def desktop_type
+    @mode != 'embedded'
+  end
+
+  def file_ext
+    File.extname(@file_name)
+  end
+
+  def file_uri
+    DocumentHelper.get_file_uri(@file_name)
+  end
+
+  def document_type
+    FileUtility.get_file_type(@file_name)
+  end
+
+  def key
+    uri = DocumentHelper.cur_user_host_address(nil) + '/' + @file_name
+    ServiceConverter.generate_revision_id(uri)
+  end
+
+  def validate_key
+    ServiceConverter.generate_validate_key(key, @user_ip)
+  end
+
+  def callback_url
+    DocumentHelper.get_callback(@file_name)
+  end
+
+end