fmt=query('SELECT * FROM formats WHERE id = ?',request.values.get('format_id',request.values['format_id']))[0]
items=query('''SELECT lectures.*, "video" AS sep, videos.*
FROM lectures
JOIN courses ON courses.id = lectures.course_id
JOIN videos ON lectures.id = videos.lecture_id
WHERE courses.id = ? AND videos.video_format = ? AND courses.visible AND lectures.visible AND videos.visible
ORDER BY videos.time_created DESC
ORDER BY lectures.time DESC
LIMIT 100''',course['id'],fmt['id'])
chapters=query('SELECT chapters.* FROM chapters JOIN lectures ON lectures.id = chapters.lecture_id WHERE lectures.course_id = ? AND NOT chapters.deleted AND chapters.visible ORDER BY time ASC',course['id'])