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chamilo-lms
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Fix course categories count when adding/removing subcategories

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1.9.x
Yannick Warnier 11 years ago
parent 2410962062
commit 4871f47658
1 changed files with 69 additions and 44 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 113
      main/inc/lib/course_category.lib.php

113
main/inc/lib/course_category.lib.php
Unescape View File

@ -1,6 +1,11 @@
<?php
/* For licensing terms, see /license.txt */
/**
* Returns whether we are in a mode where multiple URLs are configured to work
* with course categories
* @return bool
*/
function isMultipleUrlSupport()
{
global $_configuration;
@ -11,15 +16,15 @@ function isMultipleUrlSupport()
}
/**
* @param int $categoryId
*
* Returns the category fields from the database from an int ID
* @param int $categoryId The category ID
* @return array
*/
function getCategoryById($categoryId)
{
$tbl_category = Database::get_main_table(TABLE_MAIN_CATEGORY);
$categoryId = intval($categoryId);
$sql = "SELECT * FROM $tbl_category WHERE id = '$categoryId'";
$sql = "SELECT * FROM $tbl_category WHERE id = $categoryId";
$result = Database::query($sql);
if (Database::num_rows($result)) {
return Database::fetch_array($result, 'ASSOC');
@ -28,8 +33,8 @@ function getCategoryById($categoryId)
}
/**
* @param string $category
*
* Get category details from a simple category code
* @param string $category The literal category code
* @return array
*/
function getCategory($category)
@ -69,19 +74,19 @@ function getCategories($category)
t1.tree_pos,
t1.children_count,
COUNT(DISTINCT t3.code) AS nbr_courses
FROM $tbl_category t1
$conditions
LEFT JOIN $tbl_category t2 ON t1.code=t2.parent_id
LEFT JOIN $tbl_course t3 ON t3.category_code=t1.code
WHERE
t1.parent_id " . (empty($category) ? "IS NULL" : "='$category'") . "
$whereCondition
GROUP BY t1.name,
FROM $tbl_category t1
$conditions
LEFT JOIN $tbl_category t2 ON t1.code=t2.parent_id
LEFT JOIN $tbl_course t3 ON t3.category_code=t1.code
WHERE
t1.parent_id " . (empty($category) ? "IS NULL" : "='$category'") . "
$whereCondition
GROUP BY t1.name,
t1.code,
t1.parent_id,
t1.tree_pos,
t1.children_count
ORDER BY t1.tree_pos";
ORDER BY t1.tree_pos";
$result = Database::query($sql);
return Database::store_result($result);
@ -114,11 +119,11 @@ function addNode($code, $name, $canHaveCourses, $parent_id)
$tree_pos = $row['maxTreePos'] + 1;
$sql = "INSERT INTO $tbl_category(name, code, parent_id, tree_pos, children_count, auth_course_child)
VALUES('$name','$code'," .(empty($parent_id) ? "NULL" : "'$parent_id'") . ",'$tree_pos','0','$canHaveCourses')";
VALUES('$name', '$code', " .(empty($parent_id) ? "NULL" : "'$parent_id'") . ", '$tree_pos', '0', '$canHaveCourses')";
Database::query($sql);
$categoryId = Database::insert_id();
updateCategoryChildren($parent_id);
updateParentCategoryChildrenCount($parent_id, 1);
if (isMultipleUrlSupport()) {
addToUrl($categoryId);
@ -128,21 +133,30 @@ function addNode($code, $name, $canHaveCourses, $parent_id)
}
/**
* @param string $category
* Recursive function that updates the count of children in the parent
* @param string $categoryId Category ID
* @param int $delta The number to add or delete (1 to add one, -1 to remove one)
*/
function updateCategoryChildren($category)
function updateParentCategoryChildrenCount($categoryId, $delta = 1)
{
$tbl_category = Database::get_main_table(TABLE_MAIN_CATEGORY);
$category = Database::escape_string($category);
$result = Database::query("SELECT parent_id FROM $tbl_category WHERE code='$category'");
if ($row = Database::fetch_array($result)) {
updateCategoryChildren($row['parent_id']);
$categoryId = Database::escape_string($categoryId);
$delta = intval($delta);
// First get to the highest level possible in the tree
$result = Database::query("SELECT parent_id FROM $tbl_category WHERE code = '$categoryId'");
$row = Database::fetch_array($result);
if ($row !== false and $row['parent_id'] != 0) {
// if a parent was found, enter there to see if he's got one more parent
updateParentCategoryChildrenCount($row['parent_id'], $delta);
}
$children_count = compterFils($category, 0) - 1;
$sql = "UPDATE $tbl_category SET children_count='$children_count' WHERE code='$category'";
Database::query($sql);
// Now we're at the top, get back down to update each child
//$children_count = courseCategoryChildrenCount($categoryId);
if ($delta >= 0) {
$sql = "UPDATE $tbl_category SET children_count = (children_count + $delta) WHERE code = '$categoryId'";
} else {
$sql = "UPDATE $tbl_category SET children_count = (children_count - ".abs($delta).") WHERE code = '$categoryId'";
}
$result = Database::query($sql);
}
/**
@ -170,7 +184,7 @@ function deleteNode($node)
Database::query("DELETE FROM $tbl_category WHERE code='$node'");
if (!empty($row['parent_id'])) {
updateCategoryChildren($row['parent_id']);
updateParentCategoryChildrenCount($row['parent_id'], -1);
}
}
}
@ -210,6 +224,7 @@ function editNode($code, $name, $canHaveCourses, $old_code)
}
/**
* Move a node up on display
* @param string $code
* @param string $tree_pos
* @param int $parent_id
@ -219,18 +234,18 @@ function moveNodeUp($code, $tree_pos, $parent_id)
{
$tbl_category = Database::get_main_table(TABLE_MAIN_CATEGORY);
$code = Database::escape_string($code);
$tree_pos = Database::escape_string($tree_pos);
$tree_pos = intval($tree_pos);
$parent_id = intval($parent_id);
$sql = "SELECT code,tree_pos
FROM $tbl_category
WHERE parent_id " . (empty($parent_id) ? "IS NULL" : "='$parent_id'") . " AND tree_pos<'$tree_pos'
ORDER BY tree_pos DESC LIMIT 0,1";
FROM $tbl_category
WHERE parent_id " . (empty($parent_id) ? "IS NULL" : " = $parent_id") . " AND tree_pos < $tree_pos
ORDER BY tree_pos DESC LIMIT 0,1";
$result = Database::query($sql);
if (!$row = Database::fetch_array($result)) {
$sql = "SELECT code,tree_pos FROM $tbl_category
WHERE parent_id " . (empty($parent_id) ? "IS NULL" : "='$parent_id'") . " AND tree_pos>'$tree_pos'
ORDER BY tree_pos DESC LIMIT 0,1";
WHERE parent_id " . (empty($parent_id) ? "IS NULL" : " = $parent_id") . " AND tree_pos > $tree_pos
ORDER BY tree_pos DESC LIMIT 0,1";
$result2 = Database::query($sql);
if (!$row2 = Database::fetch_array($result2)) {
return false;
@ -238,24 +253,34 @@ function moveNodeUp($code, $tree_pos, $parent_id)
}
Database::query("UPDATE $tbl_category SET tree_pos='" . $row['tree_pos'] . "' WHERE code='$code'");
Database::query("UPDATE $tbl_category SET tree_pos='$tree_pos' WHERE code='$row[code]'");
Database::query("UPDATE $tbl_category SET tree_pos='$tree_pos' WHERE code='" . $code . "'");
return true;
}
/**
* @param $pere
* @param $cpt
* @return mixed
* Counts the number of children categories a category has
* @param int $categoryId The ID of the category of which we want to count the children
* @param int $count The number of subcategories we counted this far
* @return mixed The number of subcategories this category has
*/
function compterFils($parent, $cpt)
function courseCategoryChildrenCount($categoryId)
{
$tbl_category = Database::get_main_table(TABLE_MAIN_CATEGORY);
$parent = intval($parent);
$result = Database::query("SELECT code FROM $tbl_category WHERE parent_id='$parent'");
$categoryId = intval($categoryId);
$count = 0;
if (empty($categoryId)) {
return 0;
}
$sql = "SELECT id, code FROM $tbl_category WHERE parent_id = $categoryId";
$result = Database::query($sql);
while ($row = Database::fetch_array($result)) {
$cpt = compterFils($row['code'], $cpt);
$count += courseCategoryChildrenCount($row['id']);
}
return ($cpt + 1);
$sql = "UPDATE $tbl_category SET children_count = $count WHERE id = $categoryId";
Database::query($sql);
return $count + 1;
}
/**

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