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restorelib.php
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restorelib.php
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<?php //$Id$
//This php script contains all the stuff to backup/restore
//survey mods
//This is the "graphical" structure of the survey mod:
// --------------------
// survey | survey_questions |
// (CL,pk->id) |(CL,pk->id,?????) |
// | --------------------
// |
// -----------------------------------
// | |
// survey_analysis survey_answers
// (UL,pk->id, fk->survey) (UL,pk->id, fk->survey)
//
// 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)
//
//-----------------------------------------------------------
function survey_restore_mods($mod,$restore) {
global $CFG,$db;
$status = true;
//Get record from backup_ids
$data = backup_getid($restore->backup_unique_code,$mod->modtype,$mod->id);
if ($data) {
//Now get completed xmlized object
$info = $data->info;
//traverse_xmlize($info); //Debug
//print_object ($GLOBALS['traverse_array']); //Debug
//$GLOBALS['traverse_array']=""; //Debug
//Now, build the SURVEY record structure
$survey->course = $restore->course_id;
$survey->template = backup_todb($info['MOD']['#']['TEMPLATE']['0']['#']);
$survey->days = backup_todb($info['MOD']['#']['DAYS']['0']['#']);
$survey->timecreated = backup_todb($info['MOD']['#']['TIMECREATED']['0']['#']);
$survey->timemodified = backup_todb($info['MOD']['#']['TIMEMODIFIED']['0']['#']);
$survey->name = backup_todb($info['MOD']['#']['NAME']['0']['#']);
$survey->intro = backup_todb($info['MOD']['#']['INTRO']['0']['#']);
$survey->questions = backup_todb($info['MOD']['#']['QUESTIONS']['0']['#']);
//The structure is equal to the db, so insert the survey
$newid = insert_record ("survey",$survey);
//Do some output
if (!defined('RESTORE_SILENTLY')) {
echo "<li>".get_string("modulename","survey")." \"".format_string(stripslashes($survey->name),true)."\"</li>";
}
backup_flush(300);
if ($newid) {
//We have the newid, update backup_ids
backup_putid($restore->backup_unique_code,$mod->modtype,
$mod->id, $newid);
//Now check if want to restore user data and do it.
if (restore_userdata_selected($restore,'survey',$mod->id)) {
//Restore survey_answers
$status = survey_answers_restore_mods ($newid,$info,$restore);
//Restore survey_analysis
if ($status) {
$status = survey_analysis_restore_mods ($newid,$info,$restore);
}
}
} else {
$status = false;
}
} else {
$status = false;
}
return $status;
}
//This function restores the survey_answers
function survey_answers_restore_mods($survey_id,$info,$restore) {
global $CFG;
$status = true;
//Get the answers array
$answers = $info['MOD']['#']['ANSWERS']['0']['#']['ANSWER'];
//Iterate over answers
for($i = 0; $i < sizeof($answers); $i++) {
$sub_info = $answers[$i];
//traverse_xmlize($sub_info); //Debug
//print_object ($GLOBALS['traverse_array']); //Debug
//$GLOBALS['traverse_array']=""; //Debug
//We'll need this later!!
$oldid = backup_todb($sub_info['#']['ID']['0']['#']);
$olduserid = backup_todb($sub_info['#']['USERID']['0']['#']);
//Now, build the SURVEY_ANSWERS record structure
$answer->survey = $survey_id;
$answer->userid = backup_todb($sub_info['#']['USERID']['0']['#']);
$answer->question = backup_todb($sub_info['#']['QUESTION']['0']['#']);
$answer->time = backup_todb($sub_info['#']['TIME']['0']['#']);
$answer->answer1 = backup_todb($sub_info['#']['ANSWER1']['0']['#']);
$answer->answer2 = backup_todb($sub_info['#']['ANSWER2']['0']['#']);
//We have to recode the userid field
$user = backup_getid($restore->backup_unique_code,"user",$answer->userid);
if ($user) {
$answer->userid = $user->new_id;
}
//The structure is equal to the db, so insert the survey_answers
$newid = insert_record ("survey_answers",$answer);
//Do some output
if (($i+1) % 50 == 0) {
if (!defined('RESTORE_SILENTLY')) {
echo ".";
if (($i+1) % 1000 == 0) {
echo "<br />";
}
}
backup_flush(300);
}
if ($newid) {
//We have the newid, update backup_ids
backup_putid($restore->backup_unique_code,"survey_answers",$oldid,
$newid);
} else {
$status = false;
}
}
return $status;
}
//This function restores the survey_analysis
function survey_analysis_restore_mods($survey_id,$info,$restore) {
global $CFG;
$status = true;
//Get the analysis array
$analysis = $info['MOD']['#']['ANALYSIS']['0']['#']['ANALYS'];
//Iterate over analysis
for($i = 0; $i < sizeof($analysis); $i++) {
$sub_info = $analysis[$i];
//traverse_xmlize($sub_info); //Debug
//print_object ($GLOBALS['traverse_array']); //Debug
//$GLOBALS['traverse_array']=""; //Debug
//We'll need this later!!
$oldid = backup_todb($sub_info['#']['ID']['0']['#']);
$olduserid = backup_todb($sub_info['#']['USERID']['0']['#']);
//Now, build the SURVEY_ANALYSIS record structure
$analys->survey = $survey_id;
$analys->userid = backup_todb($sub_info['#']['USERID']['0']['#']);
$analys->notes = backup_todb($sub_info['#']['NOTES']['0']['#']);
//We have to recode the userid field
$user = backup_getid($restore->backup_unique_code,"user",$analys->userid);
if ($user) {
$analys->userid = $user->new_id;
}
//The structure is equal to the db, so insert the survey_analysis
$newid = insert_record ("survey_analysis",$analys);
//Do some output
if (($i+1) % 50 == 0) {
if (!defined('RESTORE_SILENTLY')) {
echo ".";
if (($i+1) % 1000 == 0) {
echo "<br />";
}
}
backup_flush(300);
}
if ($newid) {
//We have the newid, update backup_ids
backup_putid($restore->backup_unique_code,"survey_analysis",$oldid,
$newid);
} else {
$status = false;
}
}
return $status;
}
//Return a content decoded to support interactivities linking. Every module
//should have its own. They are called automatically from
//servey_decode_content_links_caller() function in each module
//in the restore process
function servey_decode_content_links ($content,$restore) {
global $CFG;
$result = $content;
//Link to the list of serveys
$searchstring='/\$@(SURVEYINDEX)\*([0-9]+)@\$/';
//We look for it
preg_match_all($searchstring,$content,$foundset);
//If found, then we are going to look for its new id (in backup tables)
if ($foundset[0]) {
//print_object($foundset); //Debug
//Iterate over foundset[2]. They are the old_ids
foreach($foundset[2] as $old_id) {
//We get the needed variables here (course id)
$rec = backup_getid($restore->backup_unique_code,"course",$old_id);
//Personalize the searchstring
$searchstring='/\$@(SURVEYINDEX)\*('.$old_id.')@\$/';
//If it is a link to this course, update the link to its new location
if($rec->new_id) {
//Now replace it
$result= preg_replace($searchstring,$CFG->wwwroot.'/mod/servey/index.php?id='.$rec->new_id,$result);
} else {
//It's a foreign link so leave it as original
$result= preg_replace($searchstring,$restore->original_wwwroot.'/mod/servey/index.php?id='.$old_id,$result);
}
}
}
//Link to servey view by moduleid
$searchstring='/\$@(SURVEYVIEWBYID)\*([0-9]+)@\$/';
//We look for it
preg_match_all($searchstring,$result,$foundset);
//If found, then we are going to look for its new id (in backup tables)
if ($foundset[0]) {
//print_object($foundset); //Debug
//Iterate over foundset[2]. They are the old_ids
foreach($foundset[2] as $old_id) {
//We get the needed variables here (course_modules id)
$rec = backup_getid($restore->backup_unique_code,"course_modules",$old_id);
//Personalize the searchstring
$searchstring='/\$@(SURVEYVIEWBYID)\*('.$old_id.')@\$/';
//If it is a link to this course, update the link to its new location
if($rec->new_id) {
//Now replace it
$result= preg_replace($searchstring,$CFG->wwwroot.'/mod/servey/view.php?id='.$rec->new_id,$result);
} else {
//It's a foreign link so leave it as original
$result= preg_replace($searchstring,$restore->original_wwwroot.'/mod/servey/view.php?id='.$old_id,$result);
}
}
}
return $result;
}
//This function makes all the necessary calls to xxxx_decode_content_links()
//function in each module, passing them the desired contents to be decoded
//from backup format to destination site/course in order to mantain inter-activities
//working in the backup/restore process. It's called from restore_decode_content_links()
//function in restore process
function survey_decode_content_links_caller($restore) {
global $CFG;
$status = true;
if ($surveys = get_records_sql ("SELECT s.id, s.intro
FROM {$CFG->prefix}survey s
WHERE s.course = $restore->course_id")) {
//Iterate over each survey->intro
$i = 0; //Counter to send some output to the browser to avoid timeouts
foreach ($surveys as $survey) {
//Increment counter
$i++;
$content = $survey->intro;
$result = restore_decode_content_links_worker($content,$restore);
if ($result != $content) {
//Update record
$survey->intro = addslashes($result);
$status = update_record("survey",$survey);
if (debugging()) {
if (!defined('RESTORE_SILENTLY')) {
echo '<br /><hr />'.s($content).'<br />changed to<br />'.s($result).'<hr /><br />';
}
}
}
//Do some output
if (($i+1) % 5 == 0) {
if (!defined('RESTORE_SILENTLY')) {
echo ".";
if (($i+1) % 100 == 0) {
echo "<br />";
}
}
backup_flush(300);
}
}
}
return $status;
}
//This function returns a log record with all the necessay transformations
//done. It's used by restore_log_module() to restore modules log.
function survey_restore_logs($restore,$log) {
$status = false;
//Depending of the action, we recode different things
switch ($log->action) {
case "add":
if ($log->cmid) {
//Get the new_id of the module (to recode the info field)
$mod = backup_getid($restore->backup_unique_code,$log->module,$log->info);
if ($mod) {
$log->url = "view.php?id=".$log->cmid;
$log->info = $mod->new_id;
$status = true;
}
}
break;
case "submit":
if ($log->cmid) {
//Get the new_id of the module (to recode the info field)
$mod = backup_getid($restore->backup_unique_code,$log->module,$log->info);
if ($mod) {
$log->url = "view.php?id=".$log->cmid;
$log->info = $mod->new_id;
$status = true;
}
}
break;
case "update":
if ($log->cmid) {
//Get the new_id of the module (to recode the info field)
$mod = backup_getid($restore->backup_unique_code,$log->module,$log->info);
if ($mod) {
$log->url = "view.php?id=".$log->cmid;
$log->info = $mod->new_id;
$status = true;
}
}
break;
case "view form":
if ($log->cmid) {
//Get the new_id of the module (to recode the info field)
$mod = backup_getid($restore->backup_unique_code,$log->module,$log->info);
if ($mod) {
$log->url = "view.php?id=".$log->cmid;
$log->info = $mod->new_id;
$status = true;
}
}
break;
case "view graph":
if ($log->cmid) {
//Get the new_id of the module (to recode the info field)
$mod = backup_getid($restore->backup_unique_code,$log->module,$log->info);
if ($mod) {
$log->url = "view.php?id=".$log->cmid;
$log->info = $mod->new_id;
$status = true;
}
}
break;
case "view report":
if ($log->cmid) {
//Get the new_id of the module (to recode the info field)
$mod = backup_getid($restore->backup_unique_code,$log->module,$log->info);
if ($mod) {
$log->url = "report.php?id=".$log->cmid;
$log->info = $mod->new_id;
$status = true;
}
}
break;
case "view all":
$log->url = "index.php?id=".$log->course;
$status = true;
break;
case "download":
if ($log->cmid) {
//Get the new_id of the module (to recode the info field)
$mod = backup_getid($restore->backup_unique_code,$log->module,$log->info);
if ($mod) {
//Rebuild the url, extracting the type (txt, xls)
$filetype = substr($log->url,-3);
$log->url = "download.php?id=".$log->cmid."&type=".$filetype;
$log->info = $mod->new_id;
$status = true;
}
}
break;
default:
if (!defined('RESTORE_SILENTLY')) {
echo "action (".$log->module."-".$log->action.") unknown. Not restored<br />"; //Debug
}
break;
}
if ($status) {
$status = $log;
}
return $status;
}
?>