public function task($task_set_id_url = NULL)
{
$this->_add_mathjax();
$task_set_id = url_get_id($task_set_id_url);
$this->usermanager->student_login_protected_redirect();
$this->_initialize_student_menu();
$this->_select_student_menu_pagetag('tasks');
$this->parser->add_css_file('frontend_tasks.css');
$this->parser->add_js_file('tasks/task.js');
$this->_add_prettify();
$this->_add_scrollTo();
$this->_add_jquery_countdown();
$this->parser->assign('max_filesize', compute_size_with_unit(intval($this->config->item('maximum_solition_filesize') * 1024)));
$cache_id = $this->usermanager->get_student_cache_id('task_set_' . $task_set_id);
if (!$this->_is_cache_enabled() || !$this->parser->isCached($this->parser->find_view('frontend/tasks/task.tpl'), $cache_id)) {
$task_set = $this->get_task_set_by_id($course, $group, $student, $task_set_id);
if ($course->exists()) {
$task_sets = $this->filter_valid_task_sets($task_set);
$this->lang->init_overlays('task_sets', $task_sets, array('name'));
$filtered_task_set = count($task_sets) == 1 ? $task_sets[0] : new Task_set();
if ($filtered_task_set->exists()) {
$this->load->helper('tests');
$test_types_subtypes = get_all_supported_test_types_and_subtypes();
$this->lang->init_overlays('task_sets', $filtered_task_set, array('name', 'instructions'));
$solution_versions = new Solution_version();
$solution_versions->where_related('solution/task_set', 'id', $task_set_id);
$solution_versions->where_related('solution', 'student_id', $this->usermanager->get_student_id());
$query = $solution_versions->get_raw();
$versions_metadata = array();
if ($query->num_rows()) {
foreach ($query->result() as $row) {
$versions_metadata[$row->version] = clone $row;
}
}
$query->free_result();
$this->parser->assign('task_set', $filtered_task_set);
$this->parser->assign('task_set_can_upload', $this->can_upload_file($filtered_task_set, $course));
$this->parser->assign('solution_files', $filtered_task_set->get_student_files($student->id));
$this->parser->assign('test_types', $test_types_subtypes['types']);
$this->parser->assign('test_subtypes', $test_types_subtypes['subtypes']);
$this->parser->assign('versions_metadata', $versions_metadata);
} else {
$this->messages->add_message('lang:tasks_task_task_set_not_found', Messages::MESSAGE_TYPE_ERROR);
redirect(create_internal_url('tasks/index'));
}
}
$this->parser->assign(array('course' => $course));
}
$this->parser->parse('frontend/tasks/task.tpl', array(), FALSE, $this->_is_cache_enabled(), $cache_id);
}
public function upload_solution($task_set_id_url, $task_id_url)
{
$task_set_id = url_get_id($task_set_id_url);
$task_id = url_get_id($task_id_url);
$this->_transaction_isolation();
$this->db->trans_begin();
$date = date('Y-m-d H:i:s');
$student = new Student();
$student->get_by_id($this->usermanager->get_student_id());
$course = new Course();
$course->where_related('active_for_student', 'id', $student->id);
$course->where_related('participant', 'student_id', $student->id);
$course->where_related('participant', 'allowed', 1);
$course->include_related('period', 'name');
$course->get();
$task_set = new Task_set();
$task_set->where_related($course);
$task_set->where('published', 1);
$task_set->group_start();
$task_set->where('publish_start_time <=', $date);
$task_set->or_where('publish_start_time', NULL);
$task_set->group_end();
$task_set->get_by_id($task_set_id);
$task = $task_set->task->include_join_fields()->get_by_id($task_id);
$project_selection = new Project_selection();
$project_selection->where_related($student);
$project_selection->where_related($task_set);
$project_selection->where_related($task);
$project_selection->get();
if ($student->exists() && $course->exists() && $task_set->exists() && $task->exists() && $project_selection->exists()) {
if ($date <= $task_set->upload_end_time) {
$config['upload_path'] = 'private/uploads/solutions/task_set_' . intval($task_set_id) . '/';
$config['allowed_types'] = 'zip';
$config['max_size'] = intval($this->config->item('maximum_solition_filesize'));
$current_version = $task_set->get_student_file_next_version($student->id);
$config['file_name'] = $student->id . '_' . $this->normalize_student_name($student) . '_' . substr(md5(time() . rand(-500000, 500000)), 0, 4) . '_' . $current_version . '.zip';
@mkdir($config['upload_path'], DIR_READ_MODE);
$this->load->library('upload', $config);
if ($this->upload->do_upload('file')) {
$solution = new Solution();
$solution->where('task_set_id', $task_set->id);
$solution->where('student_id', $student->id);
$solution->get();
$revalidate = 1;
if ($solution->exists()) {
$solution->ip_address = $_SERVER["REMOTE_ADDR"];
$solution->revalidate = $revalidate;
$solution->save();
} else {
$solution = new Solution();
$solution->ip_address = $_SERVER["REMOTE_ADDR"];
$solution->revalidate = $revalidate;
$solution->save(array('student' => $student, 'task_set' => $task_set));
}
$solution_version = new Solution_version();
$solution_version->ip_address = $_SERVER["REMOTE_ADDR"];
$solution_version->version = $current_version;
$solution_version->save($solution);
if ($this->db->trans_status()) {
$log = new Log();
$log->add_student_solution_upload_log(sprintf($this->lang->line('projects_task_solution_upload_log_message'), $config['file_name']), $student, $solution->id);
$this->db->trans_commit();
$this->messages->add_message('lang:projects_task_solution_uploaded', Messages::MESSAGE_TYPE_SUCCESS);
$this->_action_success();
$this->output->set_internal_value('task_set_id', $solution->task_set_id);
$this->output->set_internal_value('task_id', $task->id);
} else {
$this->db->trans_rollback();
@unlink($config['upload_path'] . $config['file_name']);
$this->messages->add_message('lang:projects_task_solution_canceled_due_db_error', Messages::MESSAGE_TYPE_ERROR);
}
redirect(create_internal_url('projects/task/' . $task_set_id_url . '/' . $task_id_url));
} else {
$this->db->trans_rollback();
$this->parser->assign('file_error_message', $this->upload->display_errors('', ''));
$this->task($task_set_id_url, $task_id_url);
}
} else {
$this->db->trans_rollback();
$this->messages->add_message('lang:projects_task_solution_upload_time_error', Messages::MESSAGE_TYPE_ERROR);
redirect(create_internal_url('projects/task/' . $task_set_id_url . '/' . $task_id_url));
}
} else {
$this->db->trans_rollback();
$this->messages->add_message('lang:projects_task_solution_database_data_wrong_error', Messages::MESSAGE_TYPE_ERROR);
redirect(create_internal_url('projects/task/' . $task_set_id_url . '/' . $task_id_url));
}
}
