Laravel, Detach() method to delete parent records - php

Question

Hi guys I'm working with many to many relationship and I want to know if is there any way to delete the records of the main table.
These are my tables
Schema::create('inventario_inicial', function (Blueprint $table) {
$table->increments('id');
$table->integer('producto_nombre_id')->unsigned();
$table->foreign('producto_nombre_id')->references('id')->on('producto_nombre');
$table->integer('existencias');
$table->double('promedio');
$table->timestamps();
});
Schema::create('empresa_inventario_inicial', function (Blueprint $table) {
$table->integer('empresa_id')->unsigned();
$table->foreign('empresa_id')->references('id')->on('empresas');
$table->integer('inventario_inicial_id')->unsigned();
$table->foreign('inventario_inicial_id')->references('id')->on('inventario_inicial');
});
I can get the data via pivot with this code
$empresa = Empresa::find($request->empresa_id);
$empresa->inventario_inicial();
To detach the data of that $empresa i use $empresa->inventario_inicial()->detach();
It deletes the records of the pivot table witch is correct, but also I want to delete not only what's in empresa_inventario_inicial but also inventario_inicial that were related. Something like cascade deleting but from pivot table.

Answer 1

You can use $table->foreign('inventario_inicial_id')->references('id')->on('inventario_inicial')->onDelete('cascade') in your migration.
If you don't want to cascade, consider using model events to automatically detach any empresa_inventario_official pivot records when deleting an inventario_official, and then use the $empresa->inventario_inicial()->delete() method in place of your detach() above.
In App\InventarioOfficial:
protected $dispatchesEvents = ['deleting' => InventarioDeleting::class];
Then you can define the event and a listener for the event:
In App\Events\InventarioDeleting
class InventarioDeleting
{
use SerializesModels;
public $inventario_official;
public function __construct(InventarioOfficial $inventario_official)
{
$this->inventario_official = $inventario_official;
}
}
In App\Providers\EventServiceProvider
public function boot()
{
parent::boot();
Event::listen(\App\Events\InventarioDeleting::class, function ($io) {
DB::('empresa_inventario_inicial')->where('inventario_inicial_id',$io->id)->delete();
//or $io->empresas()->detach();
});
}