instance method `references`

Ruby on Rails 3.1.12

Since v2.2.3

Available in: v2.2.3 v2.3.18 v3.0.20 v3.1.12 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:

references(*args)

Adds a reference. Optionally adds a type column, if :polymorphic option is provided. references and belongs_to are acceptable.

Examples

t.references(:goat)
t.references(:goat, :polymorphic => true)
t.belongs_to(:goat)

Parameters

args rest

Source

# File activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb, line 421
      def references(*args)
        options = args.extract_options!
        polymorphic = options.delete(:polymorphic)
        args.each do |col|
          @base.add_column(@table_name, "#{col}_id", :integer, options)
          @base.add_column(@table_name, "#{col}_type", :string, polymorphic.is_a?(Hash) ? polymorphic : options) unless polymorphic.nil?
        end
      end

Defined in activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb line 421 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::ConnectionAdapters::Table

Signature

Examples

Parameters