academico-sis/academico

class Skill extends Model
{
    //
    protected $appends = ['complete_name'];
    //
    public function getCompleteNameAttribute() : string
    {
        return '[' . ($this->level->name ?? '') . '] ' . ($this->skill_type->shortname ?? '') . ' - ' . $this->name ?? '';
    }
}

use Backpack\CRUD\app\Http\Controllers\CrudController;
use Backpack\CRUD\app\Library\CrudPanel\CrudPanelFacade as CRUD;

class EvaluationTypeCrudController extends CrudController
{
    //
    protected function setupCreateOperation()
    {
        //
        CRUD::addField([
            'label'     => __('Skills'),
            'type'      => 'select2_multiple',
            'name'      => 'skills',

            'entity'    => 'skills',
            'model'     => "App\Models\Skills\Skill",
            'attribute' => 'complete_name',
            'pivot'     => true,
            'select_all' => true,
        ]);
        //
    }
    //
}