<?php use yii\db\Migration; /** * Class m180107_203555_change_users_field_requirements */ class m180107_203555_change_users_field_requirements extends Migration { public function up() { $this->alterColumn('{{%users}}', 'username', $this->string()); $this->alterColumn('{{%users}}', 'password_hash', $this->string()); $this->alterColumn('{{%users}}', 'email', $this->string()); } public function down() { $this->alterColumn('{{%users}}', 'username', $this->string()->notNull()); $this->alterColumn('{{%users}}', 'password_hash', $this->string()->notNull()); $this->alterColumn('{{%users}}', 'email', $this->string()->notNull()); } }