academico-sis/academico

use App\Models\Course;
use Illuminate\Foundation\Support\Providers\AuthServiceProvider as ServiceProvider;
use Illuminate\Support\Facades\Gate;

class AuthServiceProvider extends ServiceProvider
{
    //
    public function boot()
    {
        $this->registerPolicies();

        Gate::define('edit-course-grades', function ($user, $course) {
            return $user->isTeacher() && $user->teacher_id == $course->teacher_id || $user->can('evaluation.edit');
        });
        //
    }
}

use App\Models\Course;
use Illuminate\Support\Facades\Gate;

class GradeController extends Controller
{
    public function edit(Course $course)
    {
        $this->checkAccessForCourse($course);

        return view('grades.edit', [
            'enrollments' => $course->enrollments,
            'course_grade_types' => $course->grade_types->sortBy('id'),
            'grades' => $course->grades,
            'course' => $course,
        ]);
    }
    //
    protected function checkAccessForCourse(Course $course): void
    {
        if (Gate::forUser(backpack_user())->denies('edit-course-grades', $course)) {
            abort(403);
        }
    }
}
}