PHP Lessons::addLesson示例

 public function actionLessons()
 {
     $tasks = ['Добавить' => 'show', 'Добавить' => 'add', 'Изменить' => 'edit', 'Удалить' => 'del'];
     $task = $_GET['task'];
     $id = $_GET['id'];
     $view = new View();
     $view->tasks = $tasks;
     if (!isset($task)) {
         $lessons = Lessons::getLessons($id);
         $view->lessons = $lessons;
         $view->display('admin/header.php');
         $view->display('admin/lessons/list.php');
         $view->display('admin/footer.php');
     } elseif ('add' == $task) {
         if (!empty($_POST)) {
             $id = Lessons::addLesson($_POST);
             header('Location: /?ctrl=Admin&act=Lessons&task=edit&id=' . $id);
         }
         $courses = Courses::getCourses();
         $view->courses = $courses;
         $view->display('admin/header.php');
         $view->display('admin/lessons/add.php');
         $view->display('admin/footer.php');
     } elseif ('edit' == $task && isset($id)) {
         if (!empty($_POST)) {
             Lessons::updateLesson($_POST);
         }
         $lesson = Lessons::getLesson($id);
         $courses = Courses::getCourses();
         $view->lesson = $lesson;
         $view->courses = $courses;
         $view->display('admin/header.php');
         $view->display('admin/lessons/edit.php');
         $view->display('admin/footer.php');
     } elseif ('del' == $task) {
         Courses::delCourse($id);
         header('Location: /?ctrl=Admin&act=Lessons');
     } else {
         $view->display('header.php');
         $view->display('404.php');
         $view->display('footer.php');
     }
 }