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141 lines
5.1 KiB
PHP
141 lines
5.1 KiB
PHP
<?php //$Id$
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//This php script contains all the stuff to backup/restore
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//attendance mods
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//This is the "graphical" structure of the attendance mod:
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//
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// attendance
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// (CL,pk->id)
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// |
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// |
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// |
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// attendance_roll
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// (UL,pk->id, fk->dayid)
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//
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// Meaning: pk->primary key field of the table
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// fk->foreign key to link with parent
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// nt->nested field (recursive data)
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// CL->course level info
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// UL->user level info
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// files->table may have files)
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//
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//-----------------------------------------------------------
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function attendance_backup_mods($bf,$preferences) {
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global $CFG;
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$status = true;
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//Iterate over attendance table
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$attendances = get_records ("attendance","course",$preferences->backup_course,"id");
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if ($attendances) {
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foreach ($attendances as $attendance) {
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//Start mod
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fwrite ($bf,start_tag("MOD",3,true));
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//Print choice data
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fwrite ($bf,full_tag("ID",4,false,$attendance->id));
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fwrite ($bf,full_tag("MODTYPE",4,false,"attendance"));
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fwrite ($bf,full_tag("NAME",4,false,$attendance->name));
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fwrite ($bf,full_tag("DAY",4,false,$attendance->day));
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fwrite ($bf,full_tag("HOURS",4,false,$attendance->hours));
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fwrite ($bf,full_tag("ROLL",4,false,$attendance->roll));
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fwrite ($bf,full_tag("NOTES",4,false,$attendance->notes));
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fwrite ($bf,full_tag("TIMEMODIFIED",4,false,$attendance->timemodified));
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fwrite ($bf,full_tag("DYNSECTION",4,false,$attendance->dynsection));
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fwrite ($bf,full_tag("EDITED",4,false,$attendance->edited));
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fwrite ($bf,full_tag("AUTOATTEND",4,false,$attendance->autoattend));
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//if we've selected to backup users info, then execute backup_attendance_roll
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if ($preferences->mods["attendance"]->userinfo) {
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$status = backup_attendance_roll($bf,$preferences,$attendance->id);
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}
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//End mod
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$status =fwrite ($bf,end_tag("MOD",3,true));
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}
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}
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return $status;
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}
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//Backup attendance_roll contents (executed from attendance_backup_mods)
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function backup_attendance_roll ($bf,$preferences,$attendance) {
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global $CFG;
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$status = true;
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$attendance_rolls = get_records("attendance_roll","dayid",$attendance,"id");
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//If there is rolls
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if ($attendance_rolls) {
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//Write start tag
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$status =fwrite ($bf,start_tag("ROLLS",4,true));
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//Iterate over each roll
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foreach ($attendance_rolls as $att_rol) {
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//Start roll
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$status =fwrite ($bf,start_tag("ROLL",5,true));
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//Print roll contents
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fwrite ($bf,full_tag("ID",6,false,$att_rol->id));
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fwrite ($bf,full_tag("USERID",6,false,$att_rol->userid));
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fwrite ($bf,full_tag("HOUR",6,false,$att_rol->hour));
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fwrite ($bf,full_tag("STATUS",6,false,$att_rol->status));
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fwrite ($bf,full_tag("NOTES",6,false,$att_rol->notes));
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//End roll
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$status =fwrite ($bf,end_tag("ROLL",5,true));
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}
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//Write end tag
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$status =fwrite ($bf,end_tag("ROLLS",4,true));
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}
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return $status;
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}
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////Return an array of info (name,value)
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function attendance_check_backup_mods($course,$user_data=false,$backup_unique_code) {
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//First the course data
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$info[0][0] = get_string("modulenameplural","attendance");
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if ($ids = attendance_ids ($course)) {
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$info[0][1] = count($ids);
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} else {
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$info[0][1] = 0;
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}
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//Now, if requested, the user_data
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if ($user_data) {
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$info[1][0] = get_string("entries");
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if ($ids = attendance_roll_ids_by_course ($course)) {
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$info[1][1] = count($ids);
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} else {
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$info[1][1] = 0;
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}
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}
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return $info;
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}
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// INTERNAL FUNCTIONS. BASED IN THE MOD STRUCTURE
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//Returns an array of attendances id
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function attendance_ids ($course) {
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global $CFG;
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return get_records_sql ("SELECT a.id, a.course
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FROM {$CFG->prefix}attendance a
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WHERE a.course = '$course'");
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}
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//Returns an array of attendance_rolls id
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function attendance_roll_ids_by_course ($course) {
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global $CFG;
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return get_records_sql ("SELECT r.id , r.dayid
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FROM {$CFG->prefix}attendance_roll r,
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{$CFG->prefix}attendance a
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WHERE a.course = '$course' AND
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r.dayid = a.id");
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}
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?>
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