m180531_115620_alter_table_question.php
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<?php
use yii\db\Migration;
/**
* Class m180531_115620_alter_table_question
*/
class m180531_115620_alter_table_question extends Migration
{
/**
* {@inheritdoc}
*/
public function safeUp()
{
$this->addColumn('question', 'doctor_id', $this->integer());
$this->addForeignKey('question_doctor_fk',
'question',
'doctor_id',
'doctor',
'id',
'SET NULL',
'CASCADE');
}
/**
* {@inheritdoc}
*/
public function safeDown()
{
$this->dropForeignKey('question_doctor_fk', 'question');
$this->dropColumn('coctor_id', 'question');
}
/*
// Use up()/down() to run migration code without a transaction.
public function up()
{
}
public function down()
{
echo "m180531_115620_alter_table_question cannot be reverted.\n";
return false;
}
*/
}