Answers for "change foreign key to cascade delete laravel migration"

cascade in laravel migration

$table->dropForeign('answers_user_id_foreign');
$table->foreign('user_id')
->references('id')->on('users')
->onDelete('cascade');

table drop foreign php laravel

public function down()
 {
   Schema::table('tarefas', function (Blueprint $table) {
     $table->dropForeign('tarefas_user_id_foreign');

     $table->dropColumn('user_id');
   });
 }