function getUserPaperDuration($uid, $courseId)
{
$tblUserSection = new DB_Haodu_UserSection();
$list = $tblUserSection->fetchAll("section_id", "where uid={$uid} and course_id={$courseId}");
if (!$list) {
return 0;
}
$sectionIds = $tblUserSection->columnRow($list, "section_id");
$tblPractiseAnswerHistory = new DB_Haodu_PractiseAnswerHistory();
$practiseList = $tblPractiseAnswerHistory->fetchAll("practise_id", "where uid={$uid} and section_id in (" . implode(",", $sectionIds) . ")");
if (!$practiseList) {
return 0;
}
$practiseIds = $tblPractiseAnswerHistory->columnRow($practiseList, "practise_id");
$tblCoursePractise = new DB_Haodu_CoursePractise();
$videoList = $tblCoursePractise->fetchAll("video_id", "where practise_id in (" . implode(",", $practiseIds) . ")");
if (!$videoList) {
return 0;
}
$videoIds = $tblCoursePractise->columnRow($videoList, "video_id");
$tblUserVideo = new DB_Haodu_UserVideo();
$videoList = $tblUserVideo->fetchAll("video_id", "where uid={$uid} and video_id in (" . implode(",", $videoIds) . ")");
if (!$videoList) {
return 0;
}
$videoIds = $tblCoursePractise->columnRow($videoList, "video_id");
$tblVideo = new DB_Haodu_CourseVideo();
$video = $tblVideo->scalar("sum(duration) as total_duration", "where id in (" . implode(',', $videoIds) . ")");
return (int) $video['total_duration'];
}
/**
* 临时::课程的学习时长
* 数据导入时没有对一些统计数据加处理.所以这里做了一个重新统计.
*/
public function getCourseDuration($courseId)
{
$tblSection = new DB_Haodu_CourseSection();
$list = $tblSection->fetchAll("video_id", "where course_id = {$courseId} and parent_id > 0");
if (!$list) {
return 0;
}
$videoIds = array();
foreach ($list as $section) {
$videoIds[] = $section['video_id'];
}
$tblVideo = new DB_Haodu_CourseVideo();
$sum = $tblVideo->scalar("sum(duration) as course_duration", "where id in (" . implode(',', $videoIds) . ")");
return $sum['course_duration'];
}
