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25ef0370d5
Complete refactoring of the system that was really awful (my fault!). Now everything is in its place and working like a charm, making things really easier to be implemented and amplied. Bug 3678 (http://moodle.org/bugs/bug.php?op=show&bugid=3678) (http://moodle.org/mod/forum/discuss.php?d=26530) Note: Everything is merged from stable but the quiz module because it has other changes not merged for now. I've skyped a message to Gustav about it. Merged from MOODLE_15_STABLE
197 lines
7.6 KiB
PHP
197 lines
7.6 KiB
PHP
<?php //$Id$
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//This php script contains all the stuff to backup/restore
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//choice mods
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//This is the "graphical" structure of the choice mod:
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//
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// choice
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// (CL,pk->id)----------|
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// | |
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// | |
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// | |
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// choice_options |
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// (UL,pk->id, fk->choiceid) |
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// | |
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// | |
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// | |
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// choice_answers |
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// (UL,pk->id, fk->choiceid, fk->optionid)
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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 choice_backup_mods($bf,$preferences) {
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global $CFG;
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$status = true;
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//Iterate over choice table
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$choices = get_records ("choice","course",$preferences->backup_course,"id");
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if ($choices) {
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foreach ($choices as $choice) {
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//Start mod
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fwrite ($bf,start_tag("MOD",3,true));
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//Print choice data
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fwrite ($bf,full_tag("ID",4,false,$choice->id));
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fwrite ($bf,full_tag("MODTYPE",4,false,"choice"));
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fwrite ($bf,full_tag("NAME",4,false,$choice->name));
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fwrite ($bf,full_tag("TEXT",4,false,$choice->text));
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fwrite ($bf,full_tag("FORMAT",4,false,$choice->format));
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fwrite ($bf,full_tag("PUBLISH",4,false,$choice->publish));
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fwrite ($bf,full_tag("RELEASE",4,false,$choice->release));
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fwrite ($bf,full_tag("DISPLAY",4,false,$choice->display));
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fwrite ($bf,full_tag("ALLOWUPDATE",4,false,$choice->allowupdate));
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fwrite ($bf,full_tag("SHOWUNANSWERED",4,false,$choice->showunanswered));
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fwrite ($bf,full_tag("LIMITANSWERS",4,false,$choice->limitanswers));
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fwrite ($bf,full_tag("TIMEOPEN",4,false,$choice->timeopen));
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fwrite ($bf,full_tag("TIMECLOSE",4,false,$choice->timeclose));
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fwrite ($bf,full_tag("TIMEMODIFIED",4,false,$choice->timemodified));
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//Now backup choice_options
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$status = backup_choice_options($bf,$preferences,$choice->id);
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//if we've selected to backup users info, then execute backup_choice_answers
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if ($preferences->mods["choice"]->userinfo && $status) {
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$status = backup_choice_answers($bf,$preferences,$choice->id);
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}
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//End mod
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$status =fwrite ($bf,end_tag("MOD",3,true));
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}
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}
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return $status;
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}
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//Backup choice_answers contents (executed from choice_backup_mods)
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function backup_choice_answers ($bf,$preferences,$choice) {
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global $CFG;
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$status = true;
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$choice_answers = get_records("choice_answers","choiceid",$choice,"id");
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//If there is answers
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if ($choice_answers) {
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//Write start tag
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$status =fwrite ($bf,start_tag("ANSWERS",4,true));
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//Iterate over each answer
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foreach ($choice_answers as $cho_ans) {
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//Start answer
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$status =fwrite ($bf,start_tag("ANSWER",5,true));
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//Print answer contents
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fwrite ($bf,full_tag("ID",6,false,$cho_ans->id));
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fwrite ($bf,full_tag("USERID",6,false,$cho_ans->userid));
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fwrite ($bf,full_tag("OPTIONID",6,false,$cho_ans->optionid));
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fwrite ($bf,full_tag("TIMEMODIFIED",6,false,$cho_ans->timemodified));
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//End answer
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$status =fwrite ($bf,end_tag("ANSWER",5,true));
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}
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//Write end tag
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$status =fwrite ($bf,end_tag("ANSWERS",4,true));
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}
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return $status;
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}
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//backup choice_options contents (executed from choice_backup_mods)
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function backup_choice_options ($bf,$preferences,$choice) {
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global $CFG;
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$status = true;
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$choice_options = get_records("choice_options","choiceid",$choice,"id");
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//If there is options
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if ($choice_options) {
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//Write start tag
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$status =fwrite ($bf,start_tag("OPTIONS",4,true));
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//Iterate over each answer
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foreach ($choice_options as $cho_opt) {
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//Start option
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$status =fwrite ($bf,start_tag("OPTION",5,true));
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//Print option contents
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fwrite ($bf,full_tag("ID",6,false,$cho_opt->id));
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fwrite ($bf,full_tag("TEXT",6,false,$cho_opt->text));
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fwrite ($bf,full_tag("MAXANSWERS",6,false,$cho_opt->maxanswers));
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fwrite ($bf,full_tag("TIMEMODIFIED",6,false,$cho_opt->timemodified));
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//End answer
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$status =fwrite ($bf,end_tag("OPTION",5,true));
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}
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//Write end tag
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$status =fwrite ($bf,end_tag("OPTIONS",4,true));
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}
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return $status;
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}
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////Return an array of info (name,value)
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function choice_check_backup_mods($course,$user_data=false,$backup_unique_code) {
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//First the course data
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$info[0][0] = get_string("modulenameplural","choice");
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if ($ids = choice_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("responses","choice");
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if ($ids = choice_answer_ids_by_course ($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 $info;
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}
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//Return a content encoded to support interactivities linking. Every module
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//should have its own. They are called automatically from the backup procedure.
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function choice_encode_content_links ($content,$preferences) {
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global $CFG;
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$base = preg_quote($CFG->wwwroot,"/");
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//Link to the list of choices
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$buscar="/(".$base."\/mod\/choice\/index.php\?id\=)([0-9]+)/";
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$result= preg_replace($buscar,'$@CHOICEINDEX*$2@$',$content);
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//Link to choice view by moduleid
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$buscar="/(".$base."\/mod\/choice\/view.php\?id\=)([0-9]+)/";
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$result= preg_replace($buscar,'$@CHOICEVIEWBYID*$2@$',$result);
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return $result;
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}
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// INTERNAL FUNCTIONS. BASED IN THE MOD STRUCTURE
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//Returns an array of choices id
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function choice_ids ($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}choice a
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WHERE a.course = '$course'");
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}
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//Returns an array of choice_answers id
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function choice_answer_ids_by_course ($course) {
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global $CFG;
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return get_records_sql ("SELECT s.id , s.choiceid
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FROM {$CFG->prefix}choice_answers s,
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{$CFG->prefix}choice a
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WHERE a.course = '$course' AND
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s.choiceid = a.id");
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}
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?>
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