index(column_name, **options) — ActiveRecord::ConnectionAdapters::Table

index(column_name, **options)

Adds a new index to the table. column_name can be a single Symbol, or an Array of Symbols.

t.index(:name)
t.index([:branch_id, :party_id], unique: true)
t.index([:branch_id, :party_id], unique: true, name: 'by_branch_party')

See connection.add_index for details of the options you can use.

Parameters

column_name req
options keyrest

Source

# File activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb, line 756
      def index(column_name, **options)
        raise_on_if_exist_options(options)
        @base.add_index(name, column_name, **options)
      end

Defined in activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb line 756 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::ConnectionAdapters::Table

Signature

Parameters