Merge pull request #20 from kv109/master

allow maxlength validation for inputs which can be blank

Author: amatsuda

lib/html5_validators/active_model/helper_methods.rb

@@ -9,7 +9,7 @@ def attribute_required?(attribute)
 
       def attribute_maxlength(attribute)
         self.validators.grep(LengthValidator).select {|v|
-          v.attributes.include?(attribute.to_sym) && (v.options.keys & [:maximum, :is]).any? && (v.options.keys & [:if, :unless, :allow_nil, :allow_blank, :tokenizer]).empty?
+          v.attributes.include?(attribute.to_sym) && (v.options.keys & [:maximum, :is]).any? && (v.options.keys & [:if, :unless, :tokenizer]).empty?
         }.map {|v| v.options.slice(:maximum, :is)}.map(&:values).flatten.max
       end