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question bank: MDL-14434 Cannot edit the only question category in a context.

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tjhunt
2008-11-27 11:50:29 +00:00
parent 004ff192d4
commit df4e224454
5 changed files with 30 additions and 27 deletions
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question/editlib.php
+23 -8
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@@ -77,17 +77,32 @@ function get_questions_category( $category, $noparent=false, $recurse=true, $exp
return $qresults;
}
/**
* @param integer $categoryid a category id.
* @return boolean whether this is the only top-level category in a context.
*/
function question_is_only_toplevel_category_in_context($categoryid) {
global $DB;
return 1 == $DB->count_records_sql("
SELECT count(*)
FROM {question_categories} c1,
{question_categories} c2
WHERE c2.id = ?
AND c1.contextid = c2.contextid
AND c1.parent = 0 AND c2.parent = 0", array($categoryid));
}
function question_can_delete_cat($todelete){
global $CFG, $DB;
$record = $DB->get_record_sql("SELECT count(*) as count, c1.contextid as contextid FROM {question_categories} c1,
{question_categories} c2 WHERE c2.id = ?
AND c1.contextid = c2.contextid GROUP BY c1.contextid", array($todelete));
$contextid = $record->contextid;
$count = $record->count;
if ($count < 2) {
/**
* Check whether this user is allowed to delete this category.
*
* @param integer $todelete a category id.
*/
function question_can_delete_cat($todelete) {
global $DB;
if (question_is_only_toplevel_category_in_context($todelete)) {
print_error('cannotdeletecate', 'question');
} else {
$contextid = $DB->get_field('question_categories', 'contextid', array('id' => $todelete));
require_capability('moodle/question:managecategory', get_context_instance_by_id($contextid));
}
}