lib/koine/attributes/adapter/string.rb in koine-attributes-0.2.2 vs lib/koine/attributes/adapter/string.rb in koine-attributes-0.2.3

@@ -1,11 +1,24 @@
 module Koine
   module Attributes
     module Adapter
       class String < Base
+        def empty_to_nil
+          @empty_to_nil = true
+          self
+        end
+
+        def trim_empty_spaces
+          @trim_empty_spaces = true
+          self
+        end
+
         def coerce(value)
           secure do
-            String(value)
+            value = String(value)
+            value = value.strip if @trim_empty_spaces
+            return nil if value.empty? && @empty_to_nil
+            value
           end
         end
       end
     end
   end