/ Ruby on Rails
/
method

field_changed?

rails latest stable - Class: ActiveRecord::AttributeMethods::Dirty

Method deprecated or moved

This method is deprecated or moved on the latest stable version. The last existing version (v3.2.8) is shown here.

field_changed?(attr, old, value)
private

No documentation available.

# File activerecord/lib/active_record/attribute_methods/dirty.rb, line 80
      def field_changed?(attr, old, value)
        if column = column_for_attribute(attr)
          if column.number? && (changes_from_nil_to_empty_string?(column, old, value) ||
                                changes_from_zero_to_string?(old, value))
            value = nil
          else
            value = column.type_cast(value)
          end
        end

        old != value
      end