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|
<?PHP //$Id: backuplib.php,v 1.16 2006/05/01 19:02:38 michaelpenne Exp $
//This php script contains all the stuff to backup/restore
//lesson mods
//This is the "graphical" structure of the lesson mod:
//
// lesson_default lesson ----------------------------|--------------------------|--------------------------|
// (UL, pk->id,fk->courseid) (CL,pk->id) | | |
// | | | |
// | lesson_grades lesson_high_scores lesson_timer
// | (UL, pk->id,fk->lessonid) (UL, pk->id,fk->lessonid) (UL, pk->id,fk->lessonid)
// |
// |
// lesson_pages---------------------------|
// (CL,pk->id,fk->lessonid) |
// | |
// | lesson_branch
// | (UL, pk->id,fk->pageid)
// lesson_answers
// (CL,pk->id,fk->pageid)
// |
// |
// |
// lesson_attempts
// (UL,pk->id,fk->answerid)
//
// Meaning: pk->primary key field of the table
// fk->foreign key to link with parent
// nt->nested field (recursive data)
// CL->course level info
// UL->user level info
// files->table may have files)
//
//-----------------------------------------------------------
//This function executes all the backup procedure about this mod
function lesson_backup_mods($bf, $preferences) {
global $CFG;
$status = true;
//Iterate over lesson table
$lessons = get_records("lesson", "course", $preferences->backup_course, "id");
if ($lessons) {
foreach ($lessons as $lesson) {
if (backup_mod_selected($preferences,'lesson',$lesson->id)) {
$status = lesson_backup_one_mod($bf,$preferences,$lesson);
}
}
}
return $status;
}
function lesson_backup_one_mod($bf,$preferences,$lesson) {
global $CFG;
if (is_numeric($lesson)) {
$lesson = get_record('lesson','id',$lesson);
}
$status = true;
//Start mod
fwrite ($bf,start_tag("MOD",3,true));
//Print lesson data
fwrite ($bf,full_tag("ID",4,false,$lesson->id));
fwrite ($bf,full_tag("MODTYPE",4,false,"lesson"));
fwrite ($bf,full_tag("NAME",4,false,$lesson->name));
fwrite ($bf,full_tag("PRACTICE",4,false,$lesson->practice));
fwrite ($bf,full_tag("MODATTEMPTS",4,false,$lesson->modattempts));
fwrite ($bf,full_tag("USEPASSWORD",4,false,$lesson->usepassword));
fwrite ($bf,full_tag("PASSWORD",4,false,$lesson->password));
fwrite ($bf,full_tag("DEPENDENCY",4,false,$lesson->dependency));
fwrite ($bf,full_tag("CONDITIONS",4,false,$lesson->conditions));
fwrite ($bf,full_tag("GRADE",4,false,$lesson->grade));
fwrite ($bf,full_tag("CUSTOM",4,false,$lesson->custom));
fwrite ($bf,full_tag("ONGOING",4,false,$lesson->ongoing));
fwrite ($bf,full_tag("USEMAXGRADE",4,false,$lesson->usemaxgrade));
fwrite ($bf,full_tag("MAXANSWERS",4,false,$lesson->maxanswers));
fwrite ($bf,full_tag("MAXATTEMPTS",4,false,$lesson->maxattempts));
fwrite ($bf,full_tag("REVIEW",4,false,$lesson->review));
fwrite ($bf,full_tag("NEXTPAGEDEFAULT",4,false,$lesson->nextpagedefault));
fwrite ($bf,full_tag("MINQUESTIONS",4,false,$lesson->minquestions));
fwrite ($bf,full_tag("MAXPAGES",4,false,$lesson->maxpages));
fwrite ($bf,full_tag("TIMED",4,false,$lesson->timed));
fwrite ($bf,full_tag("MAXTIME",4,false,$lesson->maxtime));
fwrite ($bf,full_tag("RETAKE",4,false,$lesson->retake));
fwrite ($bf,full_tag("ACTIVITYLINK",4,false,$lesson->activitylink));
fwrite ($bf,full_tag("MEDIAFILE",4,false,$lesson->mediafile));
fwrite ($bf,full_tag("MEDIAHEIGHT",4,false,$lesson->mediaheight));
fwrite ($bf,full_tag("MEDIAWIDTH",4,false,$lesson->mediawidth));
fwrite ($bf,full_tag("MEDIACLOSE",4,false,$lesson->mediaclose));
fwrite ($bf,full_tag("SLIDESHOW",4,false,$lesson->slideshow));
fwrite ($bf,full_tag("WIDTH",4,false,$lesson->width));
fwrite ($bf,full_tag("HEIGHT",4,false,$lesson->height));
fwrite ($bf,full_tag("BGCOLOR",4,false,$lesson->bgcolor));
fwrite ($bf,full_tag("DISPLAYLEFT",4,false,$lesson->displayleft));
fwrite ($bf,full_tag("DISPLAYLEFTIF",4,false,$lesson->displayleftif));
fwrite ($bf,full_tag("PROGRESSBAR",4,false,$lesson->progressbar));
fwrite ($bf,full_tag("SHOWHIGHSCORES",4,false,$lesson->highscores));
fwrite ($bf,full_tag("MAXHIGHSCORES",4,false,$lesson->maxhighscores));
fwrite ($bf,full_tag("AVAILABLE",4,false,$lesson->available));
fwrite ($bf,full_tag("DEADLINE",4,false,$lesson->deadline));
fwrite ($bf,full_tag("TIMEMODIFIED",4,false,$lesson->timemodified));
//Now we backup lesson pages
$status = backup_lesson_pages($bf,$preferences,$lesson->id);
//if we've selected to backup users info, then backup grades, high scores, and timer info
if ($status) {
if (backup_userdata_selected($preferences,'lesson',$lesson->id)) {
if(!backup_lesson_grades($bf, $preferences, $lesson->id)) {
return false;
}
if (!backup_lesson_high_scores($bf, $preferences, $lesson->id)) {
return false;
}
if (!backup_lesson_timer($bf, $preferences, $lesson->id)) {
return false;
}
}
// back up the default for the course. There might not be one, but if there
// is, there will only be one.
$status = backup_lesson_default($bf,$preferences);
//End mod
if ($status) {
$status =fwrite ($bf,end_tag("MOD",3,true));
}
}
return $status;
}
//Backup lesson_pages contents (executed from lesson_backup_mods)
function backup_lesson_pages ($bf, $preferences, $lessonid) {
global $CFG;
$status = true;
// run through the pages in their logical order, get the first page
if ($page = get_record_select("lesson_pages", "lessonid = $lessonid AND prevpageid = 0")) {
//Write start tag
$status =fwrite ($bf,start_tag("PAGES",4,true));
//Iterate over each page
while (true) {
//Start of page
$status =fwrite ($bf,start_tag("PAGE",5,true));
//Print page contents (prevpageid and nextpageid not needed)
fwrite ($bf,full_tag("PAGEID",6,false,$page->id)); // needed to fix (absolute) jumps
fwrite ($bf,full_tag("QTYPE",6,false,$page->qtype));
fwrite ($bf,full_tag("QOPTION",6,false,$page->qoption));
fwrite ($bf,full_tag("LAYOUT",6,false,$page->layout));
fwrite ($bf,full_tag("DISPLAY",6,false,$page->display));
fwrite ($bf,full_tag("TIMECREATED",6,false,$page->timecreated));
fwrite ($bf,full_tag("TIMEMODIFIED",6,false,$page->timemodified));
fwrite ($bf,full_tag("TITLE",6,false,$page->title));
fwrite ($bf,full_tag("CONTENTS",6,false,$page->contents));
//Now we backup lesson answers for this page
$status = backup_lesson_answers($bf, $preferences, $page->id);
// backup branch table info for branch tables.
if ($status && backup_userdata_selected($preferences,'lesson',$lessonid)) {
if (!backup_lesson_branch($bf, $preferences, $page->id)) {
return false;
}
}
//End of page
$status =fwrite ($bf,end_tag("PAGE",5,true));
// move to the next (logical) page
if ($page->nextpageid) {
if (!$page = get_record("lesson_pages", "id", $page->nextpageid)) {
error("Lesson Backup: Next page not found!");
}
} else {
// last page reached
break;
}
}
//Write end tag
$status =fwrite ($bf,end_tag("PAGES",4,true));
}
return $status;
}
//Backup lesson_answers contents (executed from backup_lesson_pages)
function backup_lesson_answers($bf,$preferences,$pageno) {
global $CFG;
$status = true;
// get the answers in a set order, the id order
$lesson_answers = get_records("lesson_answers", "pageid", $pageno, "id");
//If there is lesson_answers
if ($lesson_answers) {
//Write start tag
$status =fwrite ($bf,start_tag("ANSWERS",6,true));
//Iterate over each element
foreach ($lesson_answers as $answer) {
//Start answer
$status =fwrite ($bf,start_tag("ANSWER",7,true));
//Print answer contents
fwrite ($bf,full_tag("ID",8,false,$answer->id));
fwrite ($bf,full_tag("JUMPTO",8,false,$answer->jumpto));
fwrite ($bf,full_tag("GRADE",8,false,$answer->grade));
fwrite ($bf,full_tag("SCORE",8,false,$answer->score));
fwrite ($bf,full_tag("FLAGS",8,false,$answer->flags));
fwrite ($bf,full_tag("TIMECREATED",8,false,$answer->timecreated));
fwrite ($bf,full_tag("TIMEMODIFIED",8,false,$answer->timemodified));
fwrite ($bf,full_tag("ANSWERTEXT",8,false,$answer->answer));
fwrite ($bf,full_tag("RESPONSE",8,false,$answer->response));
//Now we backup any lesson attempts (if student data required)
if (backup_userdata_selected($preferences,'lesson',$answer->lessonid)) {
$status = backup_lesson_attempts($bf,$preferences,$answer->id);
}
//End rubric
$status =fwrite ($bf,end_tag("ANSWER",7,true));
}
//Write end tag
$status =fwrite ($bf,end_tag("ANSWERS",6,true));
}
return $status;
}
//Backup lesson_attempts contents (executed from lesson_backup_answers)
function backup_lesson_attempts ($bf,$preferences,$answerid) {
global $CFG;
$status = true;
$lesson_attempts = get_records("lesson_attempts","answerid", $answerid);
//If there are attempts
if ($lesson_attempts) {
//Write start tag
$status =fwrite ($bf,start_tag("ATTEMPTS",8,true));
//Iterate over each attempt
foreach ($lesson_attempts as $attempt) {
//Start Attempt
$status =fwrite ($bf,start_tag("ATTEMPT",9,true));
//Print attempt contents
fwrite ($bf,full_tag("USERID",10,false,$attempt->userid));
fwrite ($bf,full_tag("RETRY",10,false,$attempt->retry));
fwrite ($bf,full_tag("CORRECT",10,false,$attempt->correct));
fwrite ($bf,full_tag("USERANSWER",10,false,$attempt->useranswer));
fwrite ($bf,full_tag("TIMESEEN",10,false,$attempt->timeseen));
//End attempt
$status =fwrite ($bf,end_tag("ATTEMPT",9,true));
}
//Write end tag
$status =fwrite ($bf,end_tag("ATTEMPTS",8,true));
}
return $status;
}
//Backup lesson_grades contents (executed from backup_lesson_mods)
function backup_lesson_grades ($bf,$preferences,$lessonid) {
global $CFG;
$status = true;
$grades = get_records("lesson_grades", "lessonid", $lessonid);
//If there is grades
if ($grades) {
//Write start tag
$status =fwrite ($bf,start_tag("GRADES",4,true));
//Iterate over each grade
foreach ($grades as $grade) {
//Start grade
$status =fwrite ($bf,start_tag("GRADE",5,true));
//Print grade contents
fwrite ($bf,full_tag("USERID",6,false,$grade->userid));
fwrite ($bf,full_tag("GRADE_VALUE",6,false,$grade->grade));
fwrite ($bf,full_tag("LATE",6,false,$grade->late));
fwrite ($bf,full_tag("COMPLETED",6,false,$grade->completed));
//End grade
$status =fwrite ($bf,end_tag("GRADE",5,true));
}
//Write end tag
$status =fwrite ($bf,end_tag("GRADES",4,true));
}
return $status;
}
//Backup lesson_branch contents (executed from backup_lesson_pages)
function backup_lesson_branch($bf,$preferences,$pageno) {
global $CFG;
$status = true;
// get the branches in a set order, the id order
$lesson_branch = get_records("lesson_branch", "pageid", $pageno, "id");
//If there is lesson_branch
if ($lesson_branch) {
//Write start tag
$status =fwrite ($bf,start_tag("BRANCHES",6,true));
//Iterate over each element
foreach ($lesson_branch as $branch) {
//Start branch
$status =fwrite ($bf,start_tag("BRANCH",7,true));
//Print branch contents
fwrite ($bf,full_tag("USERID",8,false,$branch->userid));
fwrite ($bf,full_tag("RETRY",8,false,$branch->retry));
fwrite ($bf,full_tag("FLAG",8,false,$branch->flag));
fwrite ($bf,full_tag("TIMESEEN",8,false,$branch->timeseen));
// END BRANCH
$status =fwrite ($bf,end_tag("BRANCH",7,true));
}
//Write end tag
$status =fwrite ($bf,end_tag("BRANCHES",6,true));
}
return $status;
}
//Backup lesson_timer contents (executed from backup_lesson_mods)
function backup_lesson_timer ($bf,$preferences,$lessonid) {
global $CFG;
$status = true;
$times = get_records("lesson_timer", "lessonid", $lessonid);
//If there is times
if ($times) {
//Write start tag
$status =fwrite ($bf,start_tag("TIMES",4,true));
//Iterate over each time
foreach ($times as $time) {
//Start time
$status =fwrite ($bf,start_tag("TIME",5,true));
//Print time contents
fwrite ($bf,full_tag("USERID",6,false,$time->userid));
fwrite ($bf,full_tag("STARTTIME",6,false,$time->starttime));
fwrite ($bf,full_tag("LESSONTIME",6,false,$time->lessontime));
//End time
$status =fwrite ($bf,end_tag("TIME",5,true));
}
//Write end tag
$status =fwrite ($bf,end_tag("TIMES",4,true));
}
return $status;
}
// backup lesson_high_score contents (executed from backup_lesson_mods)
function backup_lesson_high_scores($bf, $preferences, $lessonid) {
global $CFG;
$status = true;
$highscores = get_records("lesson_high_scores", "lessonid", $lessonid);
//If there is highscores
if ($highscores) {
//Write start tag
$status =fwrite ($bf,start_tag("HIGHSCORES",4,true));
//Iterate over each highscore
foreach ($highscores as $highscore) {
//Start highscore
$status =fwrite ($bf,start_tag("HIGHSCORE",5,true));
//Print highscore contents
fwrite ($bf,full_tag("USERID",6,false,$highscore->userid));
fwrite ($bf,full_tag("GRADEID",6,false,$highscore->gradeid));
fwrite ($bf,full_tag("NICKNAME",6,false,$highscore->nickname));
//End highscore
$status =fwrite ($bf,end_tag("HIGHSCORE",5,true));
}
//Write end tag
$status =fwrite ($bf,end_tag("HIGHSCORES",4,true));
}
return $status;
}
// backup lesson_default contents (executed from backup_lesson_mods)
function backup_lesson_default ($bf,$preferences) {
global $CFG;
$status = true;
//only one default record per course
$default = get_record("lesson_default", "course", $preferences->backup_course);
if ($default) {
//Start mod
$status =fwrite ($bf,start_tag("DEFAULTS",4,true));
//Print default data
fwrite ($bf,full_tag("PRACTICE",5,false,$default->practice));
fwrite ($bf,full_tag("MODATTEMPTS",5,false,$default->modattempts));
fwrite ($bf,full_tag("USEPASSWORD",5,false,$default->usepassword));
fwrite ($bf,full_tag("PASSWORD",5,false,$default->password));
fwrite ($bf,full_tag("CONDITIONS",5,false,$default->conditions));
fwrite ($bf,full_tag("GRADE",5,false,$default->grade));
fwrite ($bf,full_tag("CUSTOM",5,false,$default->custom));
fwrite ($bf,full_tag("ONGOING",5,false,$default->ongoing));
fwrite ($bf,full_tag("USEMAXGRADE",5,false,$default->usemaxgrade));
fwrite ($bf,full_tag("MAXANSWERS",5,false,$default->maxanswers));
fwrite ($bf,full_tag("MAXATTEMPTS",5,false,$default->maxattempts));
fwrite ($bf,full_tag("REVIEW",5,false,$default->review));
fwrite ($bf,full_tag("NEXTPAGEDEFAULT",5,false,$default->nextpagedefault));
fwrite ($bf,full_tag("MINQUESTIONS",5,false,$default->minquestions));
fwrite ($bf,full_tag("MAXPAGES",5,false,$default->maxpages));
fwrite ($bf,full_tag("TIMED",5,false,$default->timed));
fwrite ($bf,full_tag("MAXTIME",5,false,$default->maxtime));
fwrite ($bf,full_tag("RETAKE",5,false,$default->retake));
fwrite ($bf,full_tag("MEDIAHEIGHT",5,false,$default->mediaheight));
fwrite ($bf,full_tag("MEDIAWIDTH",5,false,$default->mediawidth));
fwrite ($bf,full_tag("MEDIACLOSE",5,false,$default->mediaclose));
fwrite ($bf,full_tag("SLIDESHOW",5,false,$default->slideshow));
fwrite ($bf,full_tag("WIDTH",5,false,$default->width));
fwrite ($bf,full_tag("HEIGHT",5,false,$default->height));
fwrite ($bf,full_tag("BGCOLOR",5,false,$default->bgcolor));
fwrite ($bf,full_tag("DISPLAYLEFT",5,false,$default->displayleft));
fwrite ($bf,full_tag("DISPLAYLEFTIF",5,false,$default->displayleftif));
fwrite ($bf,full_tag("PROGRESSBAR",5,false,$default->progressbar));
fwrite ($bf,full_tag("HIGHSCORES",5,false,$default->highscores));
fwrite ($bf,full_tag("MAXHIGHSCORES",5,false,$default->maxhighscores));
$status =fwrite ($bf,end_tag("DEFAULTS",4,true));
}
return $status;
}
//Return an array of info (name,value)
function lesson_check_backup_mods($course,$user_data=false,$backup_unique_code,$instances=null) {
if (!empty($instances) && is_array($instances) && count($instances)) {
$info = array();
foreach ($instances as $id => $instance) {
$info += lesson_check_backup_mods_instances($instance,$backup_unique_code);
}
return $info;
}
//First the course data
$info[0][0] = get_string("modulenameplural","lesson");
if ($ids = lesson_ids($course)) {
$info[0][1] = count($ids);
} else {
$info[0][1] = 0;
}
//Now, if requested, the user_data
if ($user_data) {
$info[1][0] = get_string("attempts","lesson");
if ($ids = lesson_attempts_ids_by_course ($course)) {
$info[1][1] = count($ids);
} else {
$info[1][1] = 0;
}
}
return $info;
}
//Return an array of info (name,value)
function lesson_check_backup_mods_instances($instance,$backup_unique_code) {
//First the course data
$info[$instance->id.'0'][0] = '<b>'.$instance->name.'</b>';
$info[$instance->id.'0'][1] = '';
//Now, if requested, the user_data
if (!empty($instance->userdata)) {
$info[$instance->id.'1'][0] = get_string("attempts","lesson");
if ($ids = lesson_attempts_ids_by_instance ($instance->id)) {
$info[$instance->id.'1'][1] = count($ids);
} else {
$info[$instance->id.'1'][1] = 0;
}
}
return $info;
}
//Return a content encoded to support interactivities linking. Every module
//should have its own. They are called automatically from the backup procedure.
function lesson_encode_content_links ($content,$preferences) {
global $CFG;
$base = preg_quote($CFG->wwwroot,"/");
//Link to the list of lessons
$buscar="/(".$base."\/mod\/lesson\/index.php\?id\=)([0-9]+)/";
$result= preg_replace($buscar,'$@LESSONINDEX*$2@$',$content);
//Link to lesson view by moduleid
$buscar="/(".$base."\/mod\/lesson\/view.php\?id\=)([0-9]+)/";
$result= preg_replace($buscar,'$@LESSONVIEWBYID*$2@$',$result);
return $result;
}
// INTERNAL FUNCTIONS. BASED IN THE MOD STRUCTURE
//Returns an array of lesson id
function lesson_ids ($course) {
global $CFG;
return get_records_sql ("SELECT l.id, l.course
FROM {$CFG->prefix}lesson l
WHERE l.course = '$course'");
}
//Returns an array of lesson_submissions id
function lesson_attempts_ids_by_course ($course) {
global $CFG;
return get_records_sql ("SELECT a.id , a.lessonid
FROM {$CFG->prefix}lesson_attempts a,
{$CFG->prefix}lesson l
WHERE l.course = '$course' AND
a.lessonid = l.id");
}
//Returns an array of lesson_submissions id
function lesson_attempts_ids_by_instance ($instanceid) {
global $CFG;
return get_records_sql ("SELECT a.id , a.lessonid
FROM {$CFG->prefix}lesson_attempts a
WHERE a.lessonid = $instanceid");
}
?>
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