Laravel 5.2 rollback database with foreign key - laravel

Question

I'm trying to rollback my database, but have this error:
[Illuminate\Database\QueryException]
SQLSTATE[23000]: Integrity constraint violation: 1217 Cannot delete or update a parent row: a foreign key constraint fails (SQL: drop table tb_levels)
[PDOException]
SQLSTATE[23000]: Integrity constraint violation: 1217 Cannot delete or update a parent row: a foreign key constraint fails
this is my migration code:
public function up()
{
Schema::disableForeignKeyConstraints();
Schema::create('tb_users', function (Blueprint $table) {
$table->engine = 'InnoDB';
$table->increments('id_user');
$table->string('name');
$table->string('username');
$table->string('email')->unique();
$table->integer('id_level')->unsigned();
$table->string('password', 60);
$table->rememberToken();
$table->boolean('activated')->default(false);
$table->timestamps();
$table->foreign('id_level')->references('id_level')->on('tb_levels');
});
Schema::enableForeignKeyConstraints();
}
/**
* Reverse the migrations.
*
* #return void
*/
public function down()
{
Schema::disableForeignKeyConstraints();
Schema::table('tb_users', function(Blueprint $table){
$table->dropForeign('tb_users_id_level_foreign');
$table->dropColumn('id_level');
});
Schema::drop('tb_users');
Schema::enableForeignKeyConstraints();
}
I've tried several ways that I found in this forum, but still got that error, any help please?

Answer 1

First Disable Foreign Key using this:
SET FOREIGN_KEY_CHECKS=1;
SET GLOBAL FOREIGN_KEY_CHECKS=1;
And then migrate your database.
Again Apply Foreign key constrain:
SET FOREIGN_KEY_CHECKS=0;
SET GLOBAL FOREIGN_KEY_CHECKS=0;

Answer 2

Well, finally I found a way to solve that error,
First of all you need to make a migration to drop the foreign key and column, this is the code:
public function up()
{
Schema::disableForeignKeyConstraints();
Schema::table('tb_users', function(Blueprint $table){
$table->dropForeign('tb_users_id_level_foreign');
$table->dropColumn('id_level');
});
Schema::enableForeignKeyConstraints();
}
Then migrate it, after that It will drop the column and foreign key.
After that delete Schema::table code, save it, and run command:
php artisan migrate:reset
Well, It works but it's really an impractical way,
Hope that out there had more easy way rather than this.