Extracted attriubte serialization

1 files changed, 24 insertions, 0 deletions

diff --git a/lib/axlsx/util/serialized_attributes.rb b/lib/axlsx/util/serialized_attributes.rb
new file mode 100644
index 00000000..84a7733e
--- /dev/null
+++ b/lib/axlsx/util/serialized_attributes.rb
@@ -0,0 +1,24 @@
+module Axlsx
+  module SerializedAttributes
+
+    def self.included(base)
+      base.send :extend, ClassMethods
+    end
+
+    module ClassMethods
+      def serializable_attributes(*symbols)
+        @@serializable_attributes = symbols
+      end
+    end
+
+    def serialized_attributes(str = '')
+      serializable_values = instance_values.select do |key, value|
+        self.class.serializable_attributes.include?(key.to_sym)
+      end
+      serializable_values.each do |key, value|
+        str << "#{Axlsx.camel(key, false)}='#{value}' "
+      end
+      str
+    end
+  end
+end