making rows function shared

lib/merged/shared_helper.rb

@@ -30,5 +30,15 @@ module Merged
       self.renderer.render(text).html_safe
     end
 
+    def rows( text )
+      return 5 if text.blank?
+      text = text.text unless text.is_a?(String)
+      return 5 if text.blank?
+      rows = (text.length / 50).to_i
+      rows += text.count("\n")
+      return 5 if rows < 5
+      rows
+    end
+
   end
 end