method

attribute_names

Ruby on Rails latest stable (v7.1.3.2) - 0 notes - Class: ActiveRecord::AttributeMethods::ClassMethods

1.0.0
1.1.6
1.2.6
2.0.3
2.1.0
2.2.1
2.3.8
3.0.0
3.0.9
3.1.0
3.2.1 (0)
3.2.8 (0)
3.2.13 (0)
4.0.2 (38)
4.1.8 (0)
4.2.1 (0)
4.2.7 (0)
4.2.9 (0)
5.0.0.1 (0)
5.1.7 (0)
5.2.3 (0)
6.0.0 (0)
6.1.3.1 (0)
6.1.7.7 (0)
7.0.0 (0)
7.1.3.2 (0)
7.1.3.4 (0)
What's this?

attribute_names() public

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

class Person < ActiveRecord::Base
end

Person.attribute_names
# => ["id", "created_at", "updated_at", "name", "age"]

Show source

# File activerecord/lib/active_record/attribute_methods.rb, line 231
      def attribute_names
        @attribute_names ||= if !abstract_class? && table_exists?
          attribute_types.keys
        else
          []
        end.freeze
      end

attribute_names

Related methods