Add data type i18n

lib/rails_param/param.rb

@@ -14,7 +14,7 @@ module RailsParam
 
     def param!(name, type, options = {}, &block)
       name = name.to_s unless name.is_a? Integer # keep index for validating elements
-      
+
       return unless params.member?(name) || check_param_presence?(options[:default]) || options[:required]
 
       begin
@@ -95,7 +95,7 @@ module RailsParam
         end
         return nil
       rescue ArgumentError
-        raise InvalidParameterError, error_message_for(nil, "#{param}不是合法的：#{type}", options)
+        raise InvalidParameterError, error_message_for(nil, "#{options[:label] || param}不是合法的#{data_type_i18n(type)}", options)
       end
     end
 
@@ -145,5 +145,19 @@ module RailsParam
       end
     end
 
+    def data_type_i18n(type)
+      {
+        Integer    => '整数',
+        Float      => '数字',
+        String     => '字符串',
+        Date       => '日期',
+        Time       => '时间',
+        DateTime   => '日期时间',
+        Array      => '数组',
+        Hash       => '哈希',
+        BigDecimal => '数字'
+      }
+    end
+
   end
 end