method

invert_remove_index

Importance_0
invert_remove_index(args) private

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# File activerecord/lib/active_record/migration/command_recorder.rb, line 153
      def invert_remove_index(args)
        table, options = *args

        unless options && options.is_a?(Hash) && options[:column]
          raise ActiveRecord::IrreversibleMigration, "remove_index is only reversible if given a :column option."
        end

        options = options.dup
        [:add_index, [table, options.delete(:column), options]]
      end
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