Laravel eloquent UUID in a pivot table

Question

This question is like this one: laravel uuid not showing in query. However, the difference in this question is about that table is a pivot table with

Answer 1

I think this might be what you want:

In your model that defines the BelongsToMany relationship add this property:

protected $casts = ['relationName.pivot.id' => 'string'];

Update

I guess we can make use of anonymous classes in php7.0 here instead of creating a model class for the pivot:

i didn't test this code so i don't know if it will work or not, this is just an idea

public function activeStatuses()
{
    return $this->belongsToMany('ModelName')
                ->using(class_basename(new class extends \Illuminate\Database\Eloquent\Relations\Pivot {
                    protected $casts = ['id' => 'string'];
                }));
}

Generally i would prefer to create model for the pivot table or simply use a pivot class

Answer 2

It works for me:

// use Illuminate\Database\Eloquent\Relations\Pivot;
return $this->belongsToMany(Vendor::class, 'vendors_has_geo_cities', 'city_id', 'vendor_id')
            ->using(new class extends Pivot {
                use UuidTrait;
            });

use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Str;

trait UuidTrait
{
    public function initializeUuidTrait(): void
    {
        $this->setIncrementing(false);
        $this->setKeyType('string');
    }

    /**
     * The "booting" method of the model.
     *
     * @return void
     */
    protected static function bootUuidTrait()
    {
        self::creating(function (Model $model) {
            $model->setAttribute($model->getKeyName(), Str::orderedUuid());
        });
    }
}