How to delete a user and automatically all his relations using 'cascade'? - mysql

Question

I'm trying to delete a user and automatically all his relations using 'cascade'. Not sure how to do it. I'm using mysql.
So far i've made this:
User Model
class User extends Authenticatable
{
use Notifiable;
//...
public function profile()
{
return $this->hasOne('App\Profile');
}
}
Profile Model
class Profile extends Model
{
public function user()
{
return $this->belongsTo('App\User');
}
}
Profile migration
public function up()
{
Schema::create('profiles', function (Blueprint $table) {
$table->bigIncrements('id');
$table->unsignedBigInteger('user_id');
$table->integer('phone');
$table->timestamps();
$table->foreign('user_id')->references('id')->on('users')->onDelete('cascade');
});
}
And with tinker I'm tryng to do:
$user = App\User::firsts();
$user->delete(); // it deletes only the user
$user->profile->delete(); // it deletes only the profile

Answer 1

You could make use of Model Events:
class User extends Eloquent
{
public static function boot ()
{
parent::boot();
self::deleting(function ($user) {
// This will be executed right before the user is deleted
$user->profile->delete();
});
}
}
This way, whenever you call the delete() method on a User object, Laravel will fire the $user->profile->delete(); right before.

Answer 2

Rather than a database cascade you could delete the related model when the user is deleted by deleting the related model using the deleting event.
Include this in the Boot function of the User Model:
public static function boot ()
{
parent::boot();
self::deleting(function (User $user) {
$user->profile->delete();
});
}

Answer 3

Theres no need to do relationship staff for working with cascade. This code works fine for me -
Migration:
Schema::create('profiles', function (Blueprint $table) {
$table->bigIncrements('id');
$table->unsignedBigInteger('user_id');
$table->integer('phone');
$table->timestamps();
$table->foreign('user_id')->references('id')->on('users')->onDelete('cascade');
});
Controller:
Here ->delete() can delete both user and profile row
public function deleteUser(){
Auth::user()->delete();
return redirect()->back();
}
View Delete Link
Delete
Route
Route::get('/delete', 'HomeController#deleteUser')->name('deleteUser');