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Deletion (or move to site course) of orphan categories

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executed in the upgrade process. Now we shouldn't have
such orphans anymore! B-)

Part of bug 2459
(http://moodle.org/bugs/bug.php?op=show&bugid=2459)

Important NOTE: In the upgrade code for postgreSQL I've included
                some steps that weren't up to date. They seem to
                standard SQL code but they should be tested
                properly.... hope all works!
This commit is contained in:
stronk7
2005-06-03 12:47:44 +00:00
parent 81b1951adf
commit c0624b017b
2 changed files with 128 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
mod/quiz/db/mysql.php
+25
View File
@@ -814,6 +814,31 @@ function quiz_upgrade($oldversion) {
}
}
if ($oldversion < 2005060300) {
//Search all the orphan categories (those whose course doesn't exist)
//and process them, deleting or moving them to site course - Bug 2459
//Set debug to false
$olddebug = $db->debug;
$db->debug = false;
//Iterate over all the quiz_categories records to get their course id
if ($courses = get_records_sql ("SELECT DISTINCT course as id, course
FROM {$CFG->prefix}quiz_categories")) {
//Iterate over courses
foreach ($courses as $course) {
//If the course doesn't exist, orphan category found!
//Process it with quiz_delete_course(). It will do all the hard work.
if (!record_exists('course', 'id', $course->id)) {
require_once("$CFG->dirroot/mod/quiz/lib.php");
quiz_delete_course($course);
}
}
}
//Reset rebug to its original state
$db->debug = $olddebug;
}
return true;
}
mod/quiz/db/postgres7.php
+103
View File
@@ -809,6 +809,109 @@ function quiz_upgrade($oldversion) {
modify_database('','ALTER TABLE prefix_quiz_attemptonlast_datasets ADD CONSTRAINT prefix_quiz_category_userid_unique UNIQUE (category,userid);');
}
if ($oldversion < 2005060300) {
// We need to remove some duplicate entries that may be present in some databases
// due to a faulty restore script
// Remove duplicate entries from quiz_numerical
if ($dups = get_records_sql("
SELECT question, answer, count(*) num
FROM {$CFG->prefix}quiz_numerical
GROUP BY question, answer
HAVING count(*) > 1"
)) {
foreach ($dups as $dup) {
$ids = get_records_sql("
SELECT id, id
FROM {$CFG->prefix}quiz_numerical
WHERE question = '$dup->question'
AND answer = '$dup->answer'"
);
$skip = true;
foreach ($ids as $id) {
if ($skip) {
$skip = false;
} else {
delete_records('quiz_numerical','id', $id->id);
}
}
}
}
// Remove duplicate entries from quiz_shortanswer
if ($dups = get_records_sql("
SELECT question, answers, count(*) num
FROM {$CFG->prefix}quiz_shortanswer
GROUP BY question, answers
HAVING count(*) > 1"
)) {
foreach ($dups as $dup) {
$ids = get_records_sql("
SELECT id, id
FROM {$CFG->prefix}quiz_shortanswer
WHERE question = '$dup->question'
AND answers = '$dup->answers'"
);
$skip = true;
foreach ($ids as $id) {
if ($skip) {
$skip = false;
} else {
delete_records('quiz_shortanswer','id', $id->id);
}
}
}
}
// Remove duplicate entries from quiz_multichoice
if ($dups = get_records_sql("
SELECT question, answers, count(*) num
FROM {$CFG->prefix}quiz_multichoice
GROUP BY question, answers
HAVING count(*) > 1"
)) {
foreach ($dups as $dup) {
$ids = get_records_sql("
SELECT id, id
FROM {$CFG->prefix}quiz_multichoice
WHERE question = '$dup->question'
AND answers = '$dup->answers'"
);
$skip = true;
foreach ($ids as $id) {
if ($skip) {
$skip = false;
} else {
delete_records('quiz_multichoice','id', $id->id);
}
}
}
}
//Search all the orphan categories (those whose course doesn't exist)
//and process them, deleting or moving them to site course - Bug 2459
//Set debug to false
$olddebug = $db->debug;
$db->debug = false;
//Iterate over all the quiz_categories records to get their course id
if ($courses = get_records_sql ("SELECT DISTINCT course as id, course
FROM {$CFG->prefix}quiz_categories")) {
//Iterate over courses
foreach ($courses as $course) {
//If the course doesn't exist, orphan category found!
//Process it with quiz_delete_course(). It will do all the hard work.
if (!record_exists('course', 'id', $course->id)) {
require_once("$CFG->dirroot/mod/quiz/lib.php");
quiz_delete_course($course);
}
}
}
//Reset rebug to its original state
$db->debug = $olddebug;
}
return true;
}