instance method `attribute_names`

Ruby on Rails 3.2.22.5

Since v3.2.22.5

Available in: v3.2.22.5 v4.0.13 v4.1.16 v4.2.9 v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

attribute_names()

Returns an array of column names as strings if it’s not an abstract class and table exists. Otherwise it returns an empty array.

Source

# File activerecord/lib/active_record/attribute_methods.rb, line 128
      def attribute_names
        @attribute_names ||= if !abstract_class? && table_exists?
            column_names
          else
            []
          end
      end

Defined in activerecord/lib/active_record/attribute_methods.rb line 128 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::AttributeMethods::ClassMethods

Signature