Improve :template_with_value about rewrite

lib/shotengai/json_column.rb

@@ -34,7 +34,7 @@ module Shotengai
         harray_setter *columns, decode: decode
       end
 
-      def template_with_value key, value: "#{key}_value", template: "#{key}_template", trans: nil, trans_to: :en
+      def template_with_value key, value: "#{key}_value", template: "#{key}_template", rewrite: "#{key}_rewrite", trans: nil, trans_to: :en
         trans_result = trans.is_a?(Hash) ? %Q{
           {
             #{trans_to}_value: val&.reduce({}) do |o, obj| 
@@ -45,18 +45,23 @@ module Shotengai
           }
         } : '{}'
 
+        # QUESTION: 在继承时 self will get (Object doesn't support #inspect)
+        has_rewrite_column = self.has_attribute?(rewrite) rescue superclass.has_attribute?(rewrite)
+        rewrite_key_val = has_rewrite_column ? "rewrite: #{rewrite}" : ''
+
         class_eval %Q{
           def #{key}
             val = #{value}.is_a?(Harray) ? #{value}.decode : #{value}
             {
               template: Shotengai::Harray.encode(#{template}).keys,
               value: val,
-            }.merge(#{trans_result}).merge(try(:#{key}_rewrite) || {})
+              #{rewrite_key_val}
+            }.merge(#{trans_result})
           end
         }
       end
 
-      def template_with_value_getters *keys, value_in_template: false, delegate_template_to: nil, trans: nil, trans_to: :en
+      def template_with_value_getters *keys, value_in_template: false, delegate_template_to: nil, rewrite: nil, trans: nil, trans_to: :en
         if delegate_template_to
           self.delegate(*keys.map { |key| "#{key}_template" }, to: delegate_template_to)
         end