Laravel skip constraint violation upon first time creating model - mysql

Question

I want to know if it is possible to skip or ignore the constraint violation upon creating a user. I have a user model with a foreign key address_id.
Schema::table('user', function($table) {
$table->foreign('address_id')->references('address_id')->on('address')->onDelete('cascade');
});
Upon creating a user i want to create a user without a address yet which will be added later on.
return User::create([
'first_name' => $data['firstname'],
'last_name' => $data['lastname'],
'email' => $data['email'],
'password' => bcrypt($data['password']),
]);
but hence the constraint violation. It is possible to do this?
EDIT:
Thus i would like to keep the constraints but the example above runs into a constraint violation so what is the best way to work around this? Making a dummy address entry?

Answer 1

You can alter the DB for the time you are adding the model:
protected function turnOffDatabaseChecks()
{
DB::statement('SET FOREIGN_KEY_CHECKS=0;');
Eloquent::unguard();
}
protected function turnOnDatabaseChecks()
{
DB::statement("SET sql_mode = 'STRICT_ALL_TABLES';");
Eloquent::reguard();
}
Then in your user model:
$this->turnOffDatabaseChecks();
$user = User::create([
'first_name' => $data['firstname'],
'last_name' => $data['lastname'],
'email' => $data['email'],
'password' => bcrypt($data['password']),
]);
$this->turnOnDatabaseChecks();
return $user;
However, I'd be very cautious in using this and would ask yourself why you have a foreign key constraint that you wish to ignore.