Filament: Quiz Application

We have two Filament resources for managing quizzes and questions. Only admin users can access these two resources. Permissions are done via policies.

app/Policies/QuizPolicy.php:

use App\Models\Quiz;
use App\Models\User;
use Illuminate\Auth\Access\HandlesAuthorization;
 
class QuizPolicy
{
    use HandlesAuthorization;
 
    public function viewAny(User $user): bool
    {
        return $user->is_admin;
    }
 
    public function view(User $user, Quiz $quiz): bool
    {
        return $quiz->is_published || $user->is_admin;
    }
 
    public function create(User $user): bool
    {
        return $user->is_admin;
    }
 
    public function update(User $user, Quiz $quiz): bool
    {
        return $user->is_admin;
    }
 
    public function delete(User $user, Quiz $quiz): bool
    {
        return $user->is_admin;
    }
}

app/Policies/QuestionPolicy.php:

use App\Models\User;
use App\Models\Question;
use Illuminate\Auth\Access\HandlesAuthorization;
 
class QuestionPolicy
{
    use HandlesAuthorization;
 
    public function viewAny(User $user): bool
    {
        return $user->is_admin;
    }
 
    public function view(User $user, Question $question): bool
    {
        return $user->is_admin;
    }
 
    public function create(User $user): bool
    {
        return $user->is_admin;
    }
 
    public function update(User $user, Question $question): bool
    {
        return $user->is_admin;
    }
 
    public function delete(User $user, Question $question): bool
    {
        return $user->is_admin;
    }
}

The question form is extracted to a separate method for reuse in the quiz resource. When creating a new question, you can also select a quiz in the QuestionResource on the edit page.

app/Filament/Resources/QuestionResource.php:

use App\Models\Question;
use Filament\Forms;
use Filament\Forms\Form;
use Filament\Resources\Resource;
 
class QuestionResource extends Resource
{
    protected static ?string $model = Question::class;
 
    protected static ?string $navigationIcon = 'heroicon-o-rectangle-stack';
 
    public static function form(Form $form): Form
    {
        return $form
            ->schema(array_merge(
                static::questionForm(),
                [
                    Forms\Components\Select::make('quiz_id')
                        ->multiple()
                        ->columnSpanFull()
                        ->visibleOn('edit')
                        ->relationship('quizzes', 'title')
                ])
            );
    }
 
    // ...

Next, we will build:

• Question Building
• Quiz Resource
• Custom Widgets for Quiz leaderboard and Open Quizzes
• Custom Quiz page with Timer
• Quiz results preview