method
move
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Class: MigrationContext
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move(direction, steps)
private
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# File activerecord/lib/active_record/migration.rb, line 1217 def move(direction, steps) migrator = Migrator.new(direction, migrations, schema_migration) if current_version != 0 && !migrator.current_migration raise UnknownMigrationVersionError.new(current_version) end start_index = if current_version == 0 0 else migrator.migrations.index(migrator.current_migration) end finish = migrator.migrations[start_index + steps] version = finish ? finish.version : 0 public_send(direction, version) end