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228 lines
8.6 KiB
PHP
228 lines
8.6 KiB
PHP
<?php
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//This php script contains all the stuff to backup/restore
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//survey mods
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//This is the "graphical" structure of the survey mod:
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// --------------------
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// survey | survey_questions |
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// (CL,pk->id) |(CL,pk->id,?????) |
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// | --------------------
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// |
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// -----------------------------------
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// | |
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// survey_analysis survey_answers
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// (UL,pk->id, fk->survey) (UL,pk->id, fk->survey)
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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 survey_backup_mods($bf,$preferences) {
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global $DB;
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$status = true;
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//Iterate over survey table
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$surveys = $DB->get_records ("survey", array("course"=>$preferences->backup_course),"id");
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if ($surveys) {
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foreach ($surveys as $survey) {
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if (backup_mod_selected($preferences,'survey',$survey->id)) {
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$status = survey_backup_one_mod($bf,$preferences,$survey);
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}
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}
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}
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return $status;
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}
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function survey_backup_one_mod($bf,$preferences,$survey) {
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global $DB;
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$status = true;
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if (is_numeric($survey)) {
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$survey = $DB->get_record('survey', array('id'=>$survey));
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}
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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,$survey->id));
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fwrite ($bf,full_tag("MODTYPE",4,false,"survey"));
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fwrite ($bf,full_tag("TEMPLATE",4,false,$survey->template));
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fwrite ($bf,full_tag("DAYS",4,false,$survey->days));
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fwrite ($bf,full_tag("TIMECREATED",4,false,$survey->timecreated));
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fwrite ($bf,full_tag("TIMEMODIFIED",4,false,$survey->timemodified));
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fwrite ($bf,full_tag("NAME",4,false,$survey->name));
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fwrite ($bf,full_tag("INTRO",4,false,$survey->intro));
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fwrite ($bf,full_tag("QUESTIONS",4,false,$survey->questions));
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//if we've selected to backup users info, then execute backup_survey_answers and
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//backup_survey_analysis
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if (backup_userdata_selected($preferences,'survey',$survey->id)) {
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$status = backup_survey_answers($bf,$preferences,$survey->id);
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$status = backup_survey_analysis($bf,$preferences,$survey->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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return $status;
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}
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//Backup survey_answers contents (executed from survey_backup_mods)
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function backup_survey_answers ($bf,$preferences,$survey) {
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global $CFG, $DB;
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$status = true;
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$survey_answers = $DB->get_records("survey_answers", array("survey"=>$survey), "id");
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//If there is answers
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if ($survey_answers) {
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//Write start tag
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$status =fwrite ($bf,start_tag("ANSWERS",4,true));
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//Iterate over each answer
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foreach ($survey_answers as $sur_ans) {
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//Start answer
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$status =fwrite ($bf,start_tag("ANSWER",5,true));
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//Print survey_answers contents
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fwrite ($bf,full_tag("ID",6,false,$sur_ans->id));
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fwrite ($bf,full_tag("USERID",6,false,$sur_ans->userid));
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fwrite ($bf,full_tag("QUESTION",6,false,$sur_ans->question));
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fwrite ($bf,full_tag("TIME",6,false,$sur_ans->time));
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fwrite ($bf,full_tag("ANSWER1",6,false,$sur_ans->answer1));
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fwrite ($bf,full_tag("ANSWER2",6,false,$sur_ans->answer2));
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//End answer
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$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 $status;
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}
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//Backup survey_analysis contents (executed from survey_backup_mods)
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function backup_survey_analysis ($bf,$preferences,$survey) {
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global $CFG, $DB;
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$status = true;
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$survey_analysis = $DB->get_records("survey_analysis", array("survey"=>$survey,"id"));
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//If there is analysis
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if ($survey_analysis) {
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//Write start tag
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$status =fwrite ($bf,start_tag("ANALYSIS",4,true));
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//Iterate over each analysis
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foreach ($survey_analysis as $sur_ana) {
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//Start answer
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$status =fwrite ($bf,start_tag("ANALYS",5,true));
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//Print survey_analysis contents
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fwrite ($bf,full_tag("ID",6,false,$sur_ana->id));
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fwrite ($bf,full_tag("USERID",6,false,$sur_ana->userid));
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fwrite ($bf,full_tag("NOTES",6,false,$sur_ana->notes));
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//End answer
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$status =fwrite ($bf,end_tag("ANALYS",5,true));
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}
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//Write end tag
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$status =fwrite ($bf,end_tag("ANALYSIS",4,true));
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}
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return $status;
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}
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function survey_check_backup_mods_instances($instance,$backup_unique_code) {
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$info[$instance->id.'0'][0] = $instance->name;
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$info[$instance->id.'0'][1] = '';
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if (!empty($instance->userdata)) {
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//Subscriptions
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$info[$instance->id.'1'][0] = get_string("answers","survey");
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if ($ids = survey_answer_ids_by_instance ($instance->id)) {
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$info[$instance->id.'1'][1] = count($ids);
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} else {
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$info[$instance->id.'1'][1] = 0;
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}
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}
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return $info;
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}
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////Return an array of info (name,value)
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function survey_check_backup_mods($course,$user_data=false,$backup_unique_code,$instances=null) {
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if (!empty($instances) && is_array($instances) && count($instances)) {
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$info = array();
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foreach ($instances as $id => $instance) {
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$info += survey_check_backup_mods_instances($instance,$backup_unique_code);
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}
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return $info;
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}
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//First the course data
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$info[0][0] = get_string("modulenameplural","survey");
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if ($ids = survey_ids ($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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//Subscriptions
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$info[1][0] = get_string("answers","survey");
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if ($ids = survey_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 $info;
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}
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//Return a content encoded to support interactivities linking. Every module
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//should have its own. They are called automatically from the backup procedure.
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function servey_encode_content_links ($content,$preferences) {
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global $CFG;
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$base = preg_quote($CFG->wwwroot,"/");
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//Link to the list of serveys
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$buscar="/(".$base."\/mod\/servey\/index.php\?id\=)([0-9]+)/";
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$result= preg_replace($buscar,'$@SURVEYINDEX*$2@$',$content);
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//Link to servey view by moduleid
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$buscar="/(".$base."\/mod\/servey\/view.php\?id\=)([0-9]+)/";
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$result= preg_replace($buscar,'$@SURVEYVIEWBYID*$2@$',$result);
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return $result;
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}
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// INTERNAL FUNCTIONS. BASED IN THE MOD STRUCTURE
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//Returns an array of surveys id
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function survey_ids ($course) {
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global $DB;
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return $DB->get_records_sql ("SELECT a.id, a.course
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FROM {survey} a
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WHERE a.course = ?", array($course));
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}
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//Returns an array of survey answer id
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function survey_answer_ids_by_course ($course) {
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global $DB;
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return $DB->get_records_sql ("SELECT s.id , s.survey
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FROM {survey_answers} s, {survey} a
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WHERE a.course = ? AND s.survey = a.id", array($course));
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}
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function survey_answer_ids_by_instance ($instanceid) {
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global $DB;
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return $DB->get_records_sql ("SELECT s.id , s.survey
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FROM {survey_answers} s
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WHERE s.survey = ?", array($instanceid));
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}
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