activerecord/lib/rails/generators/active_record/migration.rb


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require 'rails/generators/migration'

module ActiveRecord
  module Generators # :nodoc:
    module Migration
      extend ActiveSupport::Concern
      include Rails::Generators::Migration

      module ClassMethods
        # Implement the required interface for Rails::Generators::Migration.
        def next_migration_number(dirname)
          next_migration_number = current_migration_number(dirname) + 1
          ActiveRecord::Migration.next_migration_number(next_migration_number)
        end
      end

      private

        def primary_key_type
          key_type = options[:primary_key_type]
          ", id: :#{key_type}" if key_type
        end
    end
  end
end