method

foreign_key

rails latest stable - Class: ActiveRecord::ConnectionAdapters::ColumnMethods::Table

foreign_key(*args, **options)

public

Adds a foreign key to the table using a supplied table name.

t.foreign_key(:authors)
t.foreign_key(:authors, column: :author_id, primary_key: "id")

See {connection.add_foreign_key}[rdoc-ref:SchemaStatements#add_foreign_key]

# File activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb, line 890
      def foreign_key(*args, **options)
        raise_on_if_exist_options(options)
        @base.add_foreign_key(name, *args, **options)
      end

foreign_key

Related methods