alterColumn('Empleado', 'descripcion', $this->string(400)->null()); } /** * {@inheritdoc} */ public function safeDown() { $this->alterColumn('Empleado', 'descripcion', $this->string(400)->notNull()); } /* // Use up()/down() to run migration code without a transaction. public function up() { } public function down() { echo "m241111_213919_Quitar_notnull_empleado_descripcion cannot be reverted.\n"; return false; } */ }