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Interface Yiisoft\Db\Migration\MigrationInterface

All Classes | Methods
Implemented byYiisoft\Db\Migration\RevertibleMigrationInterface, Yiisoft\Db\Migration\TransactionalMigrationInterface

The MigrationInterface defines the minimum set of methods to be implemented by a database migration.

Each migration class should provide the up() method containing the logic for "upgrading" the database. If you need the migration to be revertible, use Yiisoft\Db\Migration\RevertibleMigrationInterface.

Public Methods

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Method Description Defined By
up() This method contains the logic to be executed when applying this migration. Yiisoft\Db\Migration\MigrationInterface

Method Details

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up() public abstract method

This method contains the logic to be executed when applying this migration.

The DB logic implemented here will be enclosed within a DB transaction.

Child classes may implement this method instead of up() if the DB logic needs to be within a transaction.

Note: Not all DBMS support transactions. And some DB queries cannot be put into a transaction. For some examples, please refer to implicit commit.

public abstract up( Yiisoft\Db\Migration\MigrationBuilder $b ): void
$b Yiisoft\Db\Migration\MigrationBuilder 

                public function up(MigrationBuilder $b): void;