public static function selectForQuestion(CMA_Thread $thread)
 {
     $ids = $thread->getPostMeta(CMA_Thread::$_meta['attachment'], false);
     if (!empty($ids)) {
         return parent::select($thread->getId(), $ids);
     } else {
         return array();
     }
 }
 public static function selectForAnswer(CMA_Answer $answer)
 {
     $ids = get_comment_meta($answer->getId(), CMA_Answer::META_ATTACHMENT, false);
     if (!empty($ids)) {
         $result = parent::select($answer->getThreadId(), get_comment_meta($answer->getId(), CMA_Answer::META_ATTACHMENT, false));
         foreach ($result as $attachment) {
             $attachment->setAnswerId($answer->getId());
         }
         return $result;
     } else {
         return array();
     }
 }
 protected static function _processUpload()
 {
     header('content-type: application/json');
     require_once ABSPATH . 'wp-admin/includes/image.php';
     require_once ABSPATH . 'wp-admin/includes/media.php';
     $attachments = array();
     if (CMA_Settings::areAttachmentsAllowed() and !empty($_FILES['cma-file'])) {
         $maxFileSize = CMA_Settings::getOption(CMA_Settings::OPTION_ATTACHMENTS_MAX_SIZE);
         foreach ($_FILES['cma-file']['name'] as $i => $name) {
             $attachment = array('name' => $name);
             if ($_FILES['cma-file']['size'][$i] > $maxFileSize) {
                 $attachments[] = array_merge($attachment, array('status' => 'ERROR', 'msg' => CMA::__('File is too large.')));
             } else {
                 if (!CMA_Thread::checkAttachmentAllowed($name)) {
                     $msg = CMA::__('Filetype is not allowed. Allowed extensions:');
                     $msg .= ' ' . implode(', ', CMA_Settings::getOption(CMA_Settings::OPTION_ATTACHMENTS_FILE_EXTENSIONS));
                     $attachments[] = array_merge($attachment, array('status' => 'ERROR', 'msg' => $msg));
                 } else {
                     $newName = floor(microtime(true) * 1000) . '_' . sanitize_file_name($name);
                     $target = CMA_Attachment::getUploadPath() . $newName;
                     if (move_uploaded_file($_FILES['cma-file']['tmp_name'][$i], $target)) {
                         $data = array('guid' => $target, 'post_mime_type' => $_FILES['cma-file']['type'][$i], 'post_title' => $name, 'post_content' => '', 'post_status' => 'draft');
                         $attach_id = wp_insert_attachment($data, $target);
                         $attach_data = wp_generate_attachment_metadata($attach_id, $target);
                         wp_update_attachment_metadata($attach_id, $attach_data);
                         $attachments[] = array_merge($attachment, array('status' => 'OK', 'id' => $attach_id));
                     } else {
                         $attachments[] = array_merge($attachment, array('status' => 'ERROR'));
                     }
                 }
             }
         }
     }
     echo json_encode($attachments);
     exit;
 }