%PDF-
%PDF-
Mini Shell
Mini Shell
<?php
/* For licensing terms, see /license.txt */
use Chamilo\CourseBundle\Entity\CLink;
use GuzzleHttp\Client;
/**
* Function library for the links tool.
*
* This is a complete remake of the original link tool.
* New features:
* - Organize links into categories;
* - favorites/bookmarks interface;
* - move links up/down within a category;
* - move categories up/down;
* - expand/collapse all categories;
* - add link to 'root' category => category-less link is always visible.
*
* @author Patrick Cool, complete remake (December 2003 - January 2004)
* @author René Haentjens, CSV file import (October 2004)
*/
class Link extends Model
{
public $table;
public $is_course_model = true;
public $columns = [
'id',
'c_id',
'url',
'title',
'description',
'category_id',
'display_order',
'on_homepage',
'target',
'session_id',
];
public $required = ['url', 'title'];
private $course;
/**
* Link constructor.
*/
public function __construct()
{
$this->table = Database::get_course_table(TABLE_LINK);
}
/**
* @param array $course
*/
public function setCourse($course)
{
$this->course = $course;
}
/**
* @return array
*/
public function getCourse()
{
return !empty($this->course) ? $this->course : api_get_course_info();
}
/**
* Organize the saving of a link, using the parent's save method and
* updating the item_property table.
*
* @param array $params
* @param bool $show_query Whether to show the query in logs when
* calling parent's save method
*
* @return bool True if link could be saved, false otherwise
*/
public function save($params, $show_query = null)
{
$course_info = $this->getCourse();
$courseId = $course_info['real_id'];
$params['session_id'] = api_get_session_id();
$params['category_id'] = isset($params['category_id']) ? $params['category_id'] : 0;
$sql = "SELECT MAX(display_order)
FROM ".$this->table."
WHERE
c_id = $courseId AND
category_id = '".intval($params['category_id'])."'";
$result = Database::query($sql);
list($orderMax) = Database::fetch_row($result);
$order = $orderMax + 1;
$params['display_order'] = $order;
$id = parent::save($params, $show_query);
if (!empty($id)) {
// iid
$sql = "UPDATE ".$this->table." SET id = iid WHERE iid = $id";
Database::query($sql);
api_item_property_update(
$course_info,
TOOL_LINK,
$id,
'LinkAdded',
api_get_user_id()
);
api_set_default_visibility($id, TOOL_LINK, 0, $course_info);
}
return $id;
}
/**
* Update a link in the database.
*
* @param int $linkId The ID of the link to update
* @param string $linkUrl The new URL to be saved
* @param int $courseId
* @param int $sessionId
*
* @return bool
*/
public function updateLink(
$linkId,
$linkUrl,
$courseId = null,
$sessionId = null
) {
$tblLink = Database::get_course_table(TABLE_LINK);
$linkUrl = Database::escape_string($linkUrl);
$linkId = intval($linkId);
if (is_null($courseId)) {
$courseId = api_get_course_int_id();
}
$courseId = intval($courseId);
if (is_null($sessionId)) {
$sessionId = api_get_session_id();
}
$sessionId = intval($sessionId);
if ($linkUrl != '') {
$sql = "UPDATE $tblLink SET
url = '$linkUrl'
WHERE id = $linkId AND c_id = $courseId AND session_id = $sessionId";
$resLink = Database::query($sql);
return $resLink;
}
return false;
}
/**
* Used to add a link or a category.
*
* @param string $type , "link" or "category"
*
* @todo replace strings by constants
*
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
*
* @return bool True on success, false on failure
*/
public static function addlinkcategory($type)
{
$ok = true;
$_course = api_get_course_info();
$course_id = $_course['real_id'];
$session_id = api_get_session_id();
if ($type === 'link') {
$title = $_POST['title'];
$urllink = $_POST['url'];
$description = $_POST['description'];
$selectcategory = $_POST['category_id'];
$onhomepage = 0;
if (isset($_POST['on_homepage'])) {
$onhomepage = $_POST['on_homepage'];
}
$target = '_self'; // Default target.
if (!empty($_POST['target'])) {
$target = $_POST['target'];
}
$urllink = trim($urllink);
$title = trim($title);
$description = trim($description);
// We ensure URL to be absolute.
if (strpos($urllink, '://') === false) {
$urllink = 'http://'.$urllink;
}
// If the title is empty, we use the URL as title.
if ($title == '') {
$title = $urllink;
}
// If the URL is invalid, an error occurs.
if (!api_valid_url($urllink, true)) {
// A check against an absolute URL
Display::addFlash(Display::return_message(get_lang('GiveURL'), 'error'));
return false;
} else {
// Looking for the largest order number for this category.
$link = new Link();
$params = [
'c_id' => $course_id,
'url' => $urllink,
'title' => $title,
'description' => $description,
'category_id' => $selectcategory,
'on_homepage' => $onhomepage,
'target' => $target,
'session_id' => $session_id,
];
$link_id = $link->save($params);
if ((api_get_setting('search_enabled') === 'true') &&
$link_id && extension_loaded('xapian')
) {
require_once api_get_path(LIBRARY_PATH).'specific_fields_manager.lib.php';
$course_int_id = $_course['real_id'];
$courseCode = $_course['code'];
$specific_fields = get_specific_field_list();
$ic_slide = new IndexableChunk();
// Add all terms to db.
$all_specific_terms = '';
foreach ($specific_fields as $specific_field) {
if (isset($_REQUEST[$specific_field['code']])) {
$sterms = trim($_REQUEST[$specific_field['code']]);
if (!empty($sterms)) {
$all_specific_terms .= ' '.$sterms;
$sterms = explode(',', $sterms);
foreach ($sterms as $sterm) {
$ic_slide->addTerm(
trim($sterm),
$specific_field['code']
);
add_specific_field_value(
$specific_field['id'],
$courseCode,
TOOL_LINK,
$link_id,
$sterm
);
}
}
}
}
// Build the chunk to index.
$ic_slide->addValue('title', $title);
$ic_slide->addCourseId($courseCode);
$ic_slide->addToolId(TOOL_LINK);
$xapian_data = [
SE_COURSE_ID => $courseCode,
SE_TOOL_ID => TOOL_LINK,
SE_DATA => [
'link_id' => (int) $link_id,
],
SE_USER => (int) api_get_user_id(),
];
$ic_slide->xapian_data = serialize($xapian_data);
$description = $all_specific_terms.' '.$description;
$ic_slide->addValue('content', $description);
// Add category name if set.
if (isset($selectcategory) && $selectcategory > 0) {
$table_link_category = Database::get_course_table(
TABLE_LINK_CATEGORY
);
$sql_cat = 'SELECT * FROM %s WHERE id=%d AND c_id = %d LIMIT 1';
$sql_cat = sprintf(
$sql_cat,
$table_link_category,
(int) $selectcategory,
$course_int_id
);
$result = Database::query($sql_cat);
if (Database::num_rows($result) == 1) {
$row = Database::fetch_array($result);
$ic_slide->addValue(
'category',
$row['category_title']
);
}
}
$di = new ChamiloIndexer();
isset($_POST['language']) ? $lang = Database::escape_string(
$_POST['language']
) : $lang = 'english';
$di->connectDb(null, null, $lang);
$di->addChunk($ic_slide);
// Index and return search engine document id.
$did = $di->index();
if ($did) {
// Save it to db.
$tbl_se_ref = Database::get_main_table(
TABLE_MAIN_SEARCH_ENGINE_REF
);
$sql = 'INSERT INTO %s (id, course_code, tool_id, ref_id_high_level, search_did)
VALUES (NULL , \'%s\', \'%s\', %s, %s)';
$sql = sprintf(
$sql,
$tbl_se_ref,
$course_int_id,
$courseCode,
TOOL_LINK,
$link_id,
$did
);
Database::query($sql);
}
}
Display::addFlash(Display::return_message(get_lang('LinkAdded')));
return $link_id;
}
} elseif ($type === 'category') {
$tbl_categories = Database::get_course_table(TABLE_LINK_CATEGORY);
$category_title = trim($_POST['category_title']);
$description = trim($_POST['description']);
if (empty($category_title)) {
echo Display::return_message(get_lang('GiveCategoryName'), 'error');
$ok = false;
} else {
// Looking for the largest order number for this category.
$result = Database::query(
"SELECT MAX(display_order) FROM $tbl_categories
WHERE c_id = $course_id "
);
list($orderMax) = Database::fetch_row($result);
$order = $orderMax + 1;
$order = intval($order);
$session_id = api_get_session_id();
$params = [
'c_id' => $course_id,
'category_title' => $category_title,
'description' => $description,
'display_order' => $order,
'session_id' => $session_id,
];
$linkId = Database::insert($tbl_categories, $params);
if ($linkId) {
// iid
$sql = "UPDATE $tbl_categories SET id = iid WHERE iid = $linkId";
Database::query($sql);
// add link_category visibility
// course ID is taken from context in api_set_default_visibility
//api_set_default_visibility($linkId, TOOL_LINK_CATEGORY);
api_item_property_update(
$_course,
TOOL_LINK_CATEGORY,
$linkId,
'LinkCategoryAdded',
api_get_user_id()
);
api_set_default_visibility($linkId, TOOL_LINK_CATEGORY);
}
Display::addFlash(Display::return_message(get_lang('CategoryAdded')));
return $linkId;
}
}
return $ok;
}
/**
* Used to delete a link or a category.
*/
public static function deletelinkcategory(int $id, string $type, $courseId = null, bool $removeContentFromDb = false): bool
{
$courseInfo = api_get_course_info_by_id($courseId);
$tblLink = Database::get_course_table(TABLE_LINK);
$tblCategories = Database::get_course_table(TABLE_LINK_CATEGORY);
$tblItemProperty = Database::get_course_table(TABLE_ITEM_PROPERTY);
$courseIdReal = $courseInfo['real_id'];
if (empty($id)) {
return false;
}
$result = false;
switch ($type) {
case 'link':
if ($removeContentFromDb) {
// Hard delete: Remove from both c_link and item_property
$sql = "DELETE FROM $tblItemProperty
WHERE c_id = $courseIdReal AND ref = $id AND tool = '".TOOL_LINK."'";
Database::query($sql);
$sql = "DELETE FROM $tblLink
WHERE c_id = $courseIdReal AND id = $id";
Database::query($sql);
self::delete_link_from_search_engine(api_get_course_id(), $id);
Skill::deleteSkillsFromItem($id, ITEM_TYPE_LINK);
$result = true;
} else {
// Soft delete: Update visibility in item_property
$sql = "UPDATE $tblLink SET on_homepage='0'
WHERE c_id = $courseIdReal AND id='$id'";
Database::query($sql);
api_item_property_update(
$courseInfo,
TOOL_LINK,
$id,
'delete',
api_get_user_id()
);
self::delete_link_from_search_engine(api_get_course_id(), $id);
Skill::deleteSkillsFromItem($id, ITEM_TYPE_LINK);
Display::addFlash(Display::return_message(get_lang('LinkDeleted')));
$result = true;
}
break;
case 'category':
if ($removeContentFromDb) {
// Hard delete: Remove category and its links
$sql = "DELETE FROM $tblCategories
WHERE c_id = $courseIdReal AND id = $id";
Database::query($sql);
$sql = "DELETE FROM $tblLink
WHERE c_id = $courseIdReal AND category_id = $id";
Database::query($sql);
$sql = "DELETE FROM $tblItemProperty
WHERE c_id = $courseIdReal AND ref = $id AND tool = '".TOOL_LINK_CATEGORY."'";
Database::query($sql);
$result = true;
} else {
// Soft delete: Update visibility in item_property
$sql = "DELETE FROM $tblCategories
WHERE c_id = $courseIdReal AND id = $id";
Database::query($sql);
$sql = "DELETE FROM $tblLink
WHERE c_id = $courseIdReal AND category_id = $id";
Database::query($sql);
api_item_property_update(
$courseInfo,
TOOL_LINK_CATEGORY,
$id,
'delete',
api_get_user_id()
);
Display::addFlash(Display::return_message(get_lang('CategoryDeleted')));
$result = true;
}
break;
}
return $result;
}
/**
* Removes a link from search engine database.
*
* @param string $course_id Course code
* @param int $link_id Document id to delete
*/
public static function delete_link_from_search_engine($course_id, $link_id)
{
// Remove from search engine if enabled.
if (api_get_setting('search_enabled') === 'true') {
$tbl_se_ref = Database::get_main_table(
TABLE_MAIN_SEARCH_ENGINE_REF
);
$sql = 'SELECT * FROM %s WHERE course_code=\'%s\' AND tool_id=\'%s\' AND ref_id_high_level=%s LIMIT 1';
$sql = sprintf($sql, $tbl_se_ref, $course_id, TOOL_LINK, $link_id);
$res = Database::query($sql);
if (Database::num_rows($res) > 0) {
$row = Database::fetch_array($res);
$di = new ChamiloIndexer();
$di->remove_document($row['search_did']);
}
$sql = 'DELETE FROM %s WHERE course_code=\'%s\' AND tool_id=\'%s\' AND ref_id_high_level=%s LIMIT 1';
$sql = sprintf($sql, $tbl_se_ref, $course_id, TOOL_LINK, $link_id);
Database::query($sql);
// Remove terms from db.
require_once api_get_path(LIBRARY_PATH).'specific_fields_manager.lib.php';
delete_all_values_for_item($course_id, TOOL_DOCUMENT, $link_id);
}
}
/**
* Get link info.
*
* @param int $id
*
* @return array link info
*/
public static function getLinkInfo($id)
{
$tbl_link = Database::get_course_table(TABLE_LINK);
$course_id = api_get_course_int_id();
if (empty($id) || empty($course_id)) {
return [];
}
$sql = "SELECT * FROM $tbl_link
WHERE c_id = $course_id AND id='".(int) $id."' ";
$result = Database::query($sql);
$data = [];
if (Database::num_rows($result)) {
$data = Database::fetch_array($result);
}
return $data;
}
/**
* @param int $id
* @param array $values
*/
public static function editLink($id, $values = [])
{
$tbl_link = Database::get_course_table(TABLE_LINK);
$_course = api_get_course_info();
$course_id = $_course['real_id'];
$id = (int) $id;
$values['url'] = trim($values['url']);
$values['title'] = trim($values['title']);
$values['description'] = trim($values['description']);
$values['target'] = empty($values['target']) ? '_self' : $values['target'];
$values['on_homepage'] = isset($values['on_homepage']) ? $values['on_homepage'] : '';
$categoryId = intval($values['category_id']);
// We ensure URL to be absolute.
if (strpos($values['url'], '://') === false) {
$values['url'] = 'http://'.$_POST['url'];
}
// If the title is empty, we use the URL as title.
if ($values['title'] == '') {
$values['title'] = $values['url'];
}
// If the URL is invalid, an error occurs.
if (!api_valid_url($values['url'], true)) {
Display::addFlash(
Display::return_message(get_lang('GiveURL'), 'error')
);
return false;
}
if (empty($id) || empty($course_id)) {
return false;
}
// Finding the old category_id.
$sql = "SELECT * FROM $tbl_link
WHERE c_id = $course_id AND id='".$id."'";
$result = Database::query($sql);
$row = Database::fetch_array($result);
$category_id = $row['category_id'];
if ($category_id != $values['category_id']) {
$sql = "SELECT MAX(display_order)
FROM $tbl_link
WHERE
c_id = $course_id AND
category_id='".intval($values['category_id'])."'";
$result = Database::query($sql);
list($max_display_order) = Database::fetch_row($result);
$max_display_order++;
} else {
$max_display_order = $row['display_order'];
}
$params = [
'url' => $values['url'],
'title' => $values['title'],
'description' => $values['description'],
'category_id' => $values['category_id'],
'display_order' => $max_display_order,
'on_homepage' => $values['on_homepage'],
'target' => $values['target'],
];
Database::update(
$tbl_link,
$params,
['c_id = ? AND id = ?' => [$course_id, $id]]
);
// Update search enchine and its values table if enabled.
if (api_get_setting('search_enabled') === 'true') {
$course_int_id = api_get_course_int_id();
$course_id = api_get_course_id();
$link_title = Database::escape_string($values['title']);
$link_description = Database::escape_string($values['description']);
// Actually, it consists on delete terms from db,
// insert new ones, create a new search engine document, and remove the old one.
// Get search_did.
$tbl_se_ref = Database::get_main_table(
TABLE_MAIN_SEARCH_ENGINE_REF
);
$sql = 'SELECT * FROM %s WHERE course_code=\'%s\' AND tool_id=\'%s\' AND ref_id_high_level=%s LIMIT 1';
$sql = sprintf(
$sql,
$tbl_se_ref,
$course_id,
TOOL_LINK,
$id
);
$res = Database::query($sql);
if (Database::num_rows($res) > 0) {
require_once api_get_path(LIBRARY_PATH).'specific_fields_manager.lib.php';
$se_ref = Database::fetch_array($res);
$specific_fields = get_specific_field_list();
$ic_slide = new IndexableChunk();
$all_specific_terms = '';
foreach ($specific_fields as $specific_field) {
delete_all_specific_field_value(
$course_id,
$specific_field['id'],
TOOL_LINK,
$id
);
if (isset($_REQUEST[$specific_field['code']])) {
$sterms = trim(
$_REQUEST[$specific_field['code']]
);
if (!empty($sterms)) {
$all_specific_terms .= ' '.$sterms;
$sterms = explode(',', $sterms);
foreach ($sterms as $sterm) {
$ic_slide->addTerm(
trim($sterm),
$specific_field['code']
);
add_specific_field_value(
$specific_field['id'],
$course_id,
TOOL_LINK,
$id,
$sterm
);
}
}
}
}
// Build the chunk to index.
$ic_slide->addValue("title", $link_title);
$ic_slide->addCourseId($course_id);
$ic_slide->addToolId(TOOL_LINK);
$xapian_data = [
SE_COURSE_ID => $course_id,
SE_TOOL_ID => TOOL_LINK,
SE_DATA => [
'link_id' => (int) $id,
],
SE_USER => (int) api_get_user_id(),
];
$ic_slide->xapian_data = serialize($xapian_data);
$link_description = $all_specific_terms.' '.$link_description;
$ic_slide->addValue('content', $link_description);
// Add category name if set.
if (isset($categoryId) && $categoryId > 0) {
$table_link_category = Database::get_course_table(
TABLE_LINK_CATEGORY
);
$sql_cat = 'SELECT * FROM %s WHERE id=%d and c_id = %d LIMIT 1';
$sql_cat = sprintf(
$sql_cat,
$table_link_category,
$categoryId,
$course_int_id
);
$result = Database::query($sql_cat);
if (Database::num_rows($result) == 1) {
$row = Database::fetch_array($result);
$ic_slide->addValue(
'category',
$row['category_title']
);
}
}
$di = new ChamiloIndexer();
isset($_POST['language']) ? $lang = Database::escape_string($_POST['language']) : $lang = 'english';
$di->connectDb(null, null, $lang);
$di->remove_document($se_ref['search_did']);
$di->addChunk($ic_slide);
// Index and return search engine document id.
$did = $di->index();
if ($did) {
// Save it to db.
$sql = 'DELETE FROM %s
WHERE course_code=\'%s\'
AND tool_id=\'%s\'
AND ref_id_high_level=\'%s\'';
$sql = sprintf(
$sql,
$tbl_se_ref,
$course_id,
TOOL_LINK,
$id
);
Database::query($sql);
$sql = 'INSERT INTO %s (c_id, id, course_code, tool_id, ref_id_high_level, search_did)
VALUES (NULL , \'%s\', \'%s\', %s, %s)';
$sql = sprintf(
$sql,
$tbl_se_ref,
$course_int_id,
$course_id,
TOOL_LINK,
$id,
$did
);
Database::query($sql);
}
}
}
// "WHAT'S NEW" notification: update table last_toolEdit.
api_item_property_update(
$_course,
TOOL_LINK,
$id,
'LinkUpdated',
api_get_user_id()
);
Display::addFlash(Display::return_message(get_lang('LinkModded')));
}
/**
* @param int $id
* @param array $values
*
* @return bool
*/
public static function editCategory($id, $values)
{
$table = Database::get_course_table(TABLE_LINK_CATEGORY);
$course_id = api_get_course_int_id();
$id = intval($id);
// This is used to put the modified info of the category-form into the database.
$params = [
'category_title' => $values['category_title'],
'description' => $values['description'],
];
Database::update(
$table,
$params,
['c_id = ? AND id = ?' => [$course_id, $id]]
);
Display::addFlash(Display::return_message(get_lang('CategoryModded')));
return true;
}
/**
* Changes the visibility of a link.
*
* @todo add the changing of the visibility of a course
*
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
*/
public static function change_visibility_link($id, $scope)
{
$_course = api_get_course_info();
$_user = api_get_user_info();
if ($scope == TOOL_LINK) {
api_item_property_update(
$_course,
TOOL_LINK,
$id,
$_GET['action'],
$_user['user_id']
);
Display::addFlash(Display::return_message(get_lang('VisibilityChanged')));
} elseif ($scope == TOOL_LINK_CATEGORY) {
api_item_property_update(
$_course,
TOOL_LINK_CATEGORY,
$id,
$_GET['action'],
$_user['user_id']
);
Display::addFlash(Display::return_message(get_lang('VisibilityChanged')));
}
}
/**
* Generate SQL to select all the links categories in the current course and
* session.
*
* @param int $courseId
* @param int $sessionId
* @param bool $withBaseContent
*
* @return array
*/
public static function getLinkCategories($courseId, $sessionId, $withBaseContent = true)
{
$tblLinkCategory = Database::get_course_table(TABLE_LINK_CATEGORY);
$tblItemProperty = Database::get_course_table(TABLE_ITEM_PROPERTY);
$courseId = intval($courseId);
$courseInfo = api_get_course_info_by_id($courseId);
// Condition for the session.
$sessionCondition = api_get_session_condition(
$sessionId,
true,
$withBaseContent,
'linkcat.session_id'
);
// Getting links
$sql = "SELECT *, linkcat.id
FROM $tblLinkCategory linkcat
WHERE
linkcat.c_id = $courseId
$sessionCondition
ORDER BY linkcat.display_order DESC";
$result = Database::query($sql);
$categories = Database::store_result($result);
$sql = "SELECT *, linkcat.id
FROM $tblLinkCategory linkcat
INNER JOIN $tblItemProperty ip
ON (linkcat.id = ip.ref AND linkcat.c_id = ip.c_id)
WHERE
ip.tool = '".TOOL_LINK_CATEGORY."' AND
(ip.visibility = '0' OR ip.visibility = '1')
$sessionCondition AND
linkcat.c_id = ".$courseId."
ORDER BY linkcat.display_order DESC";
$result = Database::query($sql);
$categoryInItemProperty = [];
if (Database::num_rows($result)) {
while ($row = Database::fetch_array($result, 'ASSOC')) {
$categoryInItemProperty[$row['id']] = $row;
}
}
foreach ($categories as &$category) {
if (!isset($categoryInItemProperty[$category['id']])) {
api_item_property_update(
$courseInfo,
TOOL_LINK_CATEGORY,
$category['id'],
'LinkCategoryAdded',
api_get_user_id()
);
}
}
$sql = "SELECT DISTINCT linkcat.*, visibility
FROM $tblLinkCategory linkcat
INNER JOIN $tblItemProperty ip
ON (linkcat.id = ip.ref AND linkcat.c_id = ip.c_id)
WHERE
ip.tool = '".TOOL_LINK_CATEGORY."' AND
(ip.visibility = '0' OR ip.visibility = '1')
$sessionCondition AND
linkcat.c_id = ".$courseId."
ORDER BY linkcat.display_order DESC
";
$result = Database::query($sql);
return Database::store_result($result, 'ASSOC');
}
/**
* @param int $categoryId
* @param $courseId
* @param $sessionId
* @param bool $withBaseContent
*
* @return array
*/
public static function getLinksPerCategory(
$categoryId,
$courseId,
$sessionId,
$withBaseContent = true
) {
$tbl_link = Database::get_course_table(TABLE_LINK);
$TABLE_ITEM_PROPERTY = Database::get_course_table(TABLE_ITEM_PROPERTY);
$courseId = (int) $courseId;
$sessionId = (int) $sessionId;
$categoryId = (int) $categoryId;
// Condition for the session.
$condition_session = api_get_session_condition(
$sessionId,
true,
false,
'ip.session_id'
);
if (!empty($sessionId)) {
$conditionBaseSession = api_get_session_condition(
0,
true,
$withBaseContent,
'ip.session_id'
);
$condition = " AND
(
(ip.visibility = '1' $conditionBaseSession) OR
(
(ip.visibility = '0' OR ip.visibility = '1')
$condition_session
)
)
";
} else {
$condition = api_get_session_condition(
0,
true,
false,
'ip.session_id'
);
$condition .= " AND (ip.visibility = '0' OR ip.visibility = '1') $condition ";
}
$sql = "SELECT
link.id,
ip.session_id,
link.session_id link_session_id,
url,
category_id,
visibility,
description,
title,
target,
on_homepage
FROM $tbl_link link
INNER JOIN $TABLE_ITEM_PROPERTY ip
ON (link.id = ip.ref AND link.c_id = ip.c_id)
WHERE
ip.tool = '".TOOL_LINK."' AND
link.category_id = '".$categoryId."' AND
link.c_id = $courseId AND
ip.c_id = $courseId
$condition
ORDER BY link.display_order ASC, ip.session_id DESC";
$result = Database::query($sql);
return Database::store_result($result);
}
/**
* Displays all the links of a given category.
*
* @param int $catid
* @param int $courseId
* @param int $session_id
* @param bool $showActionLinks
*
* @return string
*
* @author Julio Montoya
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
*/
public static function showLinksPerCategory($catid, $courseId, $session_id, $showActionLinks = true)
{
global $token;
$_user = api_get_user_info();
$catid = (int) $catid;
$links = self::getLinksPerCategory($catid, $courseId, $session_id);
$content = '';
$numberOfLinks = count($links);
if (!empty($links)) {
$content .= '<div class="link list-group">';
$i = 1;
$linksAdded = [];
foreach ($links as $myrow) {
$linkId = $myrow['id'];
$linkUrl = Security::remove_XSS($myrow['url']);
if (in_array($linkId, $linksAdded)) {
continue;
}
$linksAdded[] = $linkId;
$categoryId = $myrow['category_id'];
// Validation when belongs to a session.
$session_img = api_get_session_image($myrow['link_session_id'], $_user['status']);
$toolbar = '';
$link_validator = '';
if (api_is_allowed_to_edit(null, true)) {
$toolbar .= Display::toolbarButton(
'',
'javascript:void(0);',
'check-circle-o',
'default btn-sm',
[
'onclick' => "check_url('".$linkId."', '".addslashes($linkUrl)."');",
'title' => get_lang('CheckURL'),
]
);
$link_validator .= Display::span(
'',
[
'id' => 'url_id_'.$linkId,
'class' => 'check-link',
]
);
if ($session_id == $myrow['link_session_id']) {
$url = api_get_self().'?'.api_get_cidreq().'&action=editlink&id='.$linkId;
$title = get_lang('Edit');
$toolbar .= Display::toolbarButton(
'',
$url,
'pencil',
'default btn-sm',
[
'title' => $title,
]
);
}
$urlVisibility = api_get_self().'?'.api_get_cidreq().
'&sec_token='.$token.
'&id='.$linkId.
'&scope=link&category_id='.$categoryId;
switch ($myrow['visibility']) {
case '1':
$urlVisibility .= '&action=invisible';
$title = get_lang('Hide');
$toolbar .= Display::toolbarButton(
'',
$urlVisibility,
'eye',
'default btn-sm',
[
'title' => $title,
]
);
break;
case '0':
$urlVisibility .= '&action=visible';
$title = get_lang('Show');
$toolbar .= Display::toolbarButton(
'',
$urlVisibility,
'eye-slash',
'primary btn-sm',
[
'title' => $title,
]
);
break;
}
if ($session_id == $myrow['link_session_id']) {
$moveLinkParams = [
'id' => $linkId,
'scope' => 'category',
'category_id' => $categoryId,
'action' => 'move_link_up',
];
$toolbar .= Display::toolbarButton(
get_lang('MoveUp'),
api_get_self().'?'.api_get_cidreq().'&'.http_build_query($moveLinkParams),
'level-up',
'default',
['class' => 'btn-sm '.($i === 1 ? 'disabled' : '')],
false
);
$moveLinkParams['action'] = 'move_link_down';
$toolbar .= Display::toolbarButton(
get_lang('MoveDown'),
api_get_self().'?'.api_get_cidreq().'&'.http_build_query($moveLinkParams),
'level-down',
'default',
['class' => 'btn-sm '.($i === $numberOfLinks ? 'disabled' : '')],
false
);
$url = api_get_self().'?'.api_get_cidreq().'&sec_token='.$token.'&action=deletelink&id='.$linkId.'&category_id='.$categoryId;
$event = "javascript: if(!confirm('".get_lang('LinkDelconfirm')."'))return false;";
$title = get_lang('Delete');
$toolbar .= Display::toolbarButton(
'',
$url,
'trash',
'default btn-sm',
[
'onclick' => $event,
'title' => $title,
]
);
}
}
$showLink = false;
$titleClass = '';
if ($myrow['visibility'] == '1') {
$showLink = true;
} else {
if (api_is_allowed_to_edit(null, true)) {
$showLink = true;
$titleClass = 'text-muted';
}
}
if ($showLink) {
$iconLink = Display::return_icon(
'url.png',
get_lang('Link'),
null,
ICON_SIZE_SMALL
);
$url = api_get_path(WEB_CODE_PATH).'link/link_goto.php?'.api_get_cidreq().'&link_id='.$linkId;
$content .= '<div class="list-group-item">';
if ($showActionLinks) {
$content .= '<div class="pull-right"><div class="btn-group">'.$toolbar.'</div></div>';
}
$content .= '<h4 class="list-group-item-heading">';
$content .= $iconLink;
$content .= Display::tag(
'a',
Security::remove_XSS($myrow['title']),
[
'href' => $url,
'target' => Security::remove_XSS($myrow['target']),
'class' => $titleClass,
]
);
$content .= $link_validator;
$content .= $session_img;
$content .= '</h4>';
$content .= '<p class="list-group-item-text">'.Security::remove_XSS($myrow['description']).'</p>';
$content .= '</div>';
}
$i++;
}
$content .= '</div>';
}
return $content;
}
/**
* Displays the edit, delete and move icons.
*
* @param int Category ID
* @param int $currentCategory
* @param int $countCategories
*
* @return string
*
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
*/
public static function showCategoryAdminTools($category, $currentCategory, $countCategories)
{
$categoryId = $category['id'];
$token = null;
$tools = '<a href="'.api_get_self().'?'.api_get_cidreq().'&sec_token='.$token.'&action=editcategory&id='.$categoryId.'&category_id='.$categoryId.'" title='.get_lang('Modify').'">'.
Display::return_icon(
'edit.png',
get_lang('Modify'),
[],
ICON_SIZE_SMALL
).'</a>';
// DISPLAY MOVE UP COMMAND only if it is not the top link.
if ($currentCategory != 0) {
$tools .= '<a href="'.api_get_self().'?'.api_get_cidreq().'&sec_token='.$token.'&action=up&up='.$categoryId.'&category_id='.$categoryId.'" title="'.get_lang('Up').'">'.
Display::return_icon(
'up.png',
get_lang('Up'),
[],
ICON_SIZE_SMALL
).'</a>';
} else {
$tools .= Display::return_icon(
'up_na.png',
get_lang('Up'),
[],
ICON_SIZE_SMALL
).'</a>';
}
// DISPLAY MOVE DOWN COMMAND only if it is not the bottom link.
if ($currentCategory < $countCategories - 1) {
$tools .= '<a href="'.api_get_self().'?'.api_get_cidreq().'&sec_token='.$token.'&action=down&down='.$categoryId.'&category_id='.$categoryId.'">'.
Display::return_icon(
'down.png',
get_lang('Down'),
[],
ICON_SIZE_SMALL
).'</a>';
} else {
$tools .= Display::return_icon(
'down_na.png',
get_lang('Down'),
[],
ICON_SIZE_SMALL
).'</a>';
}
$tools .= '<a href="'.api_get_self().'?'.api_get_cidreq().'&sec_token='.$token.'&action=deletecategory&id='.$categoryId."&category_id=$categoryId\"
onclick=\"javascript: if(!confirm('".get_lang('CategoryDelconfirm')."')) return false;\">".
Display::return_icon(
'delete.png',
get_lang('Delete'),
[],
ICON_SIZE_SMALL
).'</a>';
return $tools;
}
/**
* move a link or a linkcategory up or down.
*
* @param int Category ID
* @param int Course ID
* @param int Session ID
*
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
*
* @todo support sessions
*/
public static function movecatlink($action, $catlinkid, $courseId = null, $sessionId = null)
{
$tbl_categories = Database::get_course_table(TABLE_LINK_CATEGORY);
if (is_null($courseId)) {
$courseId = api_get_course_int_id();
}
$courseId = intval($courseId);
if (is_null($sessionId)) {
$sessionId = api_get_session_id();
}
$sessionId = intval($sessionId);
$thiscatlinkId = intval($catlinkid);
if ($action === 'down') {
$sortDirection = 'DESC';
}
if ($action === 'up') {
$sortDirection = 'ASC';
}
$movetable = $tbl_categories;
if (!empty($sortDirection)) {
if (!in_array(trim(strtoupper($sortDirection)), ['ASC', 'DESC'])) {
$sortDirection = 'ASC';
}
$sql = "SELECT id, display_order FROM $movetable
WHERE c_id = $courseId
ORDER BY display_order $sortDirection";
$linkresult = Database::query($sql);
$thislinkOrder = 1;
while ($sortrow = Database::fetch_array($linkresult)) {
// STEP 2 : FOUND THE NEXT LINK ID AND ORDER, COMMIT SWAP
// This part seems unlogic, but it isn't . We first look for the current link with the querystring ID
// and we know the next iteration of the while loop is the next one. These should be swapped.
if (isset($thislinkFound) && $thislinkFound) {
$nextlinkId = $sortrow['id'];
$nextlinkOrder = $sortrow['display_order'];
Database::query(
"UPDATE ".$movetable."
SET display_order = '$nextlinkOrder'
WHERE c_id = $courseId AND id = '$thiscatlinkId'"
);
Database::query(
"UPDATE ".$movetable."
SET display_order = '$thislinkOrder'
WHERE c_id = $courseId AND id = '$nextlinkId'"
);
break;
}
if ($sortrow['id'] == $thiscatlinkId) {
$thislinkOrder = $sortrow['display_order'];
$thislinkFound = true;
}
}
}
Display::addFlash(Display::return_message(get_lang('LinkMoved')));
}
/**
* This function checks if the url is a vimeo link.
*
* @author Julio Montoya
*
* @version 1.0
*/
public static function isVimeoLink($url)
{
$isLink = strrpos($url, 'vimeo.com');
return $isLink;
}
/**
* Get vimeo id from URL.
*
* @param string $url
*
* @return bool|mixed
*/
public static function getVimeoLinkId($url)
{
$possibleUrls = [
'http://www.vimeo.com/',
'http://vimeo.com/',
'https://www.vimeo.com/',
'https://vimeo.com/',
];
$url = str_replace($possibleUrls, '', $url);
if (is_numeric($url)) {
return $url;
}
return false;
}
/**
* This function checks if the url is a youtube link.
*
* @author Jorge Frisancho
* @author Julio Montoya - Fixing code
*
* @version 1.0
*/
public static function is_youtube_link($url)
{
$is_youtube_link = strrpos($url, 'youtube') || strrpos(
$url,
'youtu.be'
);
return $is_youtube_link;
}
/**
* This function checks if the url is a PDF File link.
*
* @author Jorge Frisancho
* @author Alex Aragón - Fixing code
*
* @version 1.0
*/
public static function isPdfLink($url)
{
$isPdfLink = strrpos(strtolower($url), '.pdf');
return $isPdfLink;
}
/**
* Get youtube id from an URL.
*
* @param string $url
*
* @return string
*/
public static function get_youtube_video_id($url)
{
// This is the length of YouTube's video IDs
$len = 11;
// The ID string starts after "v=", which is usually right after
// "youtube.com/watch?" in the URL
$pos = strpos($url, "v=");
$id = '';
//If false try other options
if ($pos === false) {
$url_parsed = parse_url($url);
//Youtube shortener
//http://youtu.be/ID
$pos = strpos($url, "youtu.be");
if ($pos == false) {
$id = '';
} else {
return substr($url_parsed['path'], 1);
}
//if empty try the youtube.com/embed/ID
if (empty($id)) {
$pos = strpos($url, "embed");
if ($pos === false) {
return '';
} else {
return substr($url_parsed['path'], 7);
}
}
} else {
// Offset the start location to match the beginning of the ID string
$pos += 2;
// Get the ID string and return it
$id = substr($url, $pos, $len);
return $id;
}
}
/**
* @param int $course_id
* @param int $session_id
* @param int $categoryId
* @param string $show
* @param null $token
* @param bool $showActionLinks
* @param bool $forceOpenCategories
*
* @return string
*/
public static function listLinksAndCategories(
$course_id,
$session_id,
$categoryId,
$show = 'none',
$token = null,
$showActionLinks = true,
$forceOpenCategories = false
) {
$categoryId = (int) $categoryId;
$content = '';
$categories = self::getLinkCategories($course_id, $session_id);
$countCategories = count($categories);
$linksPerCategory = self::showLinksPerCategory(0, $course_id, $session_id, $showActionLinks);
if ($showActionLinks) {
/* Action Links */
$content = '<div class="actions">';
if (api_is_allowed_to_edit(null, true)) {
$content .= '<a href="'.api_get_self().'?'.api_get_cidreq(
).'&action=addlink&category_id='.$categoryId.'">'.
Display::return_icon('new_link.png', get_lang('LinkAdd'), '', ICON_SIZE_MEDIUM).'</a>';
$content .= '<a href="'.api_get_self().'?'.api_get_cidreq(
).'&action=addcategory&category_id='.$categoryId.'">'.
Display::return_icon('new_folder.png', get_lang('CategoryAdd'), '', ICON_SIZE_MEDIUM).'</a>';
}
if (!empty($countCategories)) {
$content .= '<a href="'.api_get_self().'?'.api_get_cidreq().'&action=list&show=none">';
$content .= Display::return_icon(
'forum_listview.png',
get_lang('FlatView'),
'',
ICON_SIZE_MEDIUM
).' </a>';
$content .= '<a href="'.api_get_self().'?'.api_get_cidreq().'&action=list&show=all">';
$content .= Display::return_icon(
'forum_nestedview.png',
get_lang('NestedView'),
'',
ICON_SIZE_MEDIUM
).'</a>';
}
$content .= Display::url(
Display::return_icon('pdf.png', get_lang('ExportToPdf'), '', ICON_SIZE_MEDIUM),
api_get_self().'?'.api_get_cidreq().'&action=export'
);
$content .= '</div>';
}
if (empty($countCategories)) {
$content .= $linksPerCategory;
} else {
if (!empty($linksPerCategory)) {
$content .= Display::panel($linksPerCategory, get_lang('NoCategory'));
}
}
$counter = 0;
foreach ($categories as $myrow) {
// Student don't see invisible categories.
if (!api_is_allowed_to_edit(null, true)) {
if ($myrow['visibility'] == 0) {
continue;
}
}
// Validation when belongs to a session
$showChildren = $categoryId == $myrow['id'] || $show === 'all';
if ($forceOpenCategories) {
$showChildren = true;
}
$strVisibility = '';
$visibilityClass = null;
if ($myrow['visibility'] == '1') {
$strVisibility = '<a href="link.php?'.api_get_cidreq().'&sec_token='.$token.'&action=invisible&id='.$myrow['id'].'&scope='.TOOL_LINK_CATEGORY.'" title="'.get_lang('Hide').'">'.
Display::return_icon('visible.png', get_lang('Hide'), [], ICON_SIZE_SMALL).'</a>';
} elseif ($myrow['visibility'] == '0') {
$visibilityClass = 'text-muted';
$strVisibility = ' <a href="link.php?'.api_get_cidreq().'&sec_token='.$token.'&action=visible&id='.$myrow['id'].'&scope='.TOOL_LINK_CATEGORY.'" title="'.get_lang('Show').'">'.
Display::return_icon('invisible.png', get_lang('Show'), [], ICON_SIZE_SMALL).'</a>';
}
$header = '';
if ($showChildren) {
$header .= '<a class="'.$visibilityClass.'" href="'.api_get_self().'?'.api_get_cidreq().'&category_id=">';
$header .= Display::return_icon('forum_nestedview.png');
} else {
$header .= '<a class="'.$visibilityClass.'" href="'.api_get_self().'?'.api_get_cidreq().'&category_id='.$myrow['id'].'">';
$header .= Display::return_icon('forum_listview.png');
}
$header .= Security::remove_XSS($myrow['category_title']).'</a>';
if ($showActionLinks) {
if (api_is_allowed_to_edit(null, true)) {
if ($session_id == $myrow['session_id']) {
$header .= $strVisibility;
$header .= self::showCategoryAdminTools($myrow, $counter, count($categories));
} else {
$header .= get_lang('EditionNotAvailableFromSession');
}
}
}
$childrenContent = '';
if ($showChildren) {
$childrenContent = self::showLinksPerCategory(
$myrow['id'],
$course_id,
$session_id,
$showActionLinks
);
}
$content .= Display::panel(Security::remove_XSS($myrow['description']).$childrenContent, $header);
$counter++;
}
return $content;
}
/**
* @param int $linkId
* @param string $action
* @param null $token
*
* @return FormValidator
*/
public static function getLinkForm($linkId, $action, $token = null)
{
$course_id = api_get_course_int_id();
$session_id = api_get_session_id();
$linkInfo = self::getLinkInfo($linkId);
$categoryId = isset($linkInfo['category_id']) ? $linkInfo['category_id'] : '';
$lpId = isset($_GET['lp_id']) ? Security::remove_XSS($_GET['lp_id']) : null;
$form = new FormValidator(
'link',
'post',
api_get_self().'?action='.$action.
'&category_id='.$categoryId.
'&'.api_get_cidreq().
'&id='.$linkId.
'&sec_token='.$token
);
if ($action === 'addlink') {
$form->addHeader(get_lang('LinkAdd'));
} else {
$form->addHeader(get_lang('LinkMod'));
}
$target_link = '_blank';
$title = '';
$category = '';
$onhomepage = '';
$description = '';
if (!empty($linkInfo)) {
$urllink = $linkInfo['url'];
$title = $linkInfo['title'];
$description = $linkInfo['description'];
$category = $linkInfo['category_id'];
if ($linkInfo['on_homepage'] != 0) {
$onhomepage = 1;
}
$target_link = $linkInfo['target'];
}
$form->addHidden('id', $linkId);
$form->addText('url', 'URL');
$form->addRule('url', get_lang('GiveURL'), 'url');
$form->addText('title', get_lang('LinkName'));
$form->addTextarea('description', get_lang('Description'));
$resultcategories = self::getLinkCategories($course_id, $session_id);
$options = ['0' => '--'];
if (!empty($resultcategories)) {
foreach ($resultcategories as $myrow) {
$options[$myrow['id']] = $myrow['category_title'];
}
}
$form->addSelect('category_id', get_lang('Category'), $options);
$form->addCheckBox('on_homepage', null, get_lang('OnHomepage'));
$targets = [
'_self' => get_lang('LinkOpenSelf'),
'_blank' => get_lang('LinkOpenBlank'),
'_parent' => get_lang('LinkOpenParent'),
'_top' => get_lang('LinkOpenTop'),
];
$form->addSelect(
'target',
[
get_lang('LinkTarget'),
get_lang('AddTargetOfLinkOnHomepage'),
],
$targets
);
$defaults = [
'url' => empty($urllink) ? 'http://' : str_replace('&', '&', Security::remove_XSS($urllink)),
'title' => Security::remove_XSS($title),
'category_id' => $category,
'on_homepage' => $onhomepage,
'description' => Security::remove_XSS($description),
'target' => $target_link,
];
if (api_get_setting('search_enabled') === 'true') {
require_once api_get_path(LIBRARY_PATH).'specific_fields_manager.lib.php';
$specific_fields = get_specific_field_list();
$form->addCheckBox('index_document', get_lang('SearchFeatureDoIndexLink'), get_lang('Yes'));
foreach ($specific_fields as $specific_field) {
$default_values = '';
if ($action === 'editlink') {
$filter = [
'field_id' => $specific_field['id'],
'ref_id' => intval($_GET['id']),
'tool_id' => '\''.TOOL_LINK.'\'',
];
$values = get_specific_field_values_list($filter, ['value']);
if (!empty($values)) {
$arr_str_values = [];
foreach ($values as $value) {
$arr_str_values[] = $value['value'];
}
$default_values = implode(', ', $arr_str_values);
}
}
$form->addText($specific_field['name'], $specific_field['code']);
$defaults[$specific_field['name']] = $default_values;
}
}
Skill::addSkillsToForm($form, api_get_course_int_id(), api_get_session_id(), ITEM_TYPE_LINK, $linkId);
$form->addHidden('lp_id', $lpId);
$form->addButtonSave(get_lang('SaveLink'), 'submitLink');
$form->setDefaults($defaults);
return $form;
}
/**
* @param int $id
* @param string $action
*
* @return FormValidator
*/
public static function getCategoryForm($id, $action)
{
$id = (int) $id;
$action = Security::remove_XSS($action);
$form = new FormValidator(
'category',
'post',
api_get_self().'?action='.$action.'&'.api_get_cidreq()
);
$defaults = [];
if ($action == 'addcategory') {
$form->addHeader(get_lang('CategoryAdd'));
$my_cat_title = get_lang('CategoryAdd');
} else {
$form->addHeader(get_lang('CategoryMod'));
$my_cat_title = get_lang('CategoryMod');
$defaults = self::getCategory($id);
}
$form->addHidden('id', $id);
$form->addText('category_title', get_lang('CategoryName'));
$form->addTextarea('description', get_lang('Description'));
$form->addButtonSave($my_cat_title, 'submitCategory');
$form->setDefaults($defaults);
return $form;
}
/**
* @param int $id
*
* @return array
*/
public static function getCategory($id)
{
$table = Database::get_course_table(TABLE_LINK_CATEGORY);
$id = (int) $id;
$courseId = api_get_course_int_id();
if (empty($id) || empty($courseId)) {
return [];
}
$sql = "SELECT * FROM $table
WHERE id = $id AND c_id = $courseId";
$result = Database::query($sql);
$category = Database::fetch_array($result, 'ASSOC');
return $category;
}
/**
* It gets the category by a specific name.
*
* @param string $name
*
* @return array
*/
public static function getCategoryByName($name)
{
$table = Database::get_course_table(TABLE_LINK_CATEGORY);
$courseId = api_get_course_int_id();
$name = Database::escape_string($name);
$sql = "SELECT * FROM $table
WHERE category_title = '$name' AND c_id = $courseId";
$result = Database::query($sql);
$category = Database::fetch_array($result, 'ASSOC');
return $category;
}
/**
* Move a link up in its category.
*
* @param int $id
*
* @return bool
*/
public static function moveLinkUp($id)
{
return self::moveLinkDisplayOrder($id, 'ASC');
}
/**
* Move a link down in its category.
*
* @param int $id
*
* @return bool
*/
public static function moveLinkDown($id)
{
return self::moveLinkDisplayOrder($id, 'DESC');
}
public static function checkUrl(string $url): bool
{
$defaults = [
'allow_redirects' => [
'max' => 5, // max number of redirects allowed
'strict' => true, // whether to use strict redirects or not
'referer' => true, // whether to add the Referer header when redirecting
'protocols' => ['http', 'https'], // protocols allowed to be redirected to
'track_redirects' => true, // whether to keep track of the number of redirects
],
'connect_timeout' => 4,
'timeout' => 4,
];
$proxySettings = api_get_configuration_value('proxy_settings');
if (!empty($proxySettings) &&
isset($proxySettings['curl_setopt_array'])
) {
$defaults['proxy'] = sprintf(
'%s:%s',
$proxySettings['curl_setopt_array']['CURLOPT_PROXY'],
$proxySettings['curl_setopt_array']['CURLOPT_PROXYPORT']
);
}
$client = new Client(['defaults' => $defaults]);
try {
$responseIpv6 = $client->get($url);
if (200 === $responseIpv6->getStatusCode()) {
return true;
}
} catch (Exception $e) {
try {
$responseIpv4 = $client->request('GET', $url, ['force_ip_resolve' => 'v4']);
if (200 === $responseIpv4->getStatusCode()) {
return true;
}
} catch (Exception $e) {
return false;
}
}
return false;
}
/**
* Move a link inside its category (display_order field).
*
* @param int $id The link ID
* @param string $direction The direction to sort the links
*
* @return bool
*/
private static function moveLinkDisplayOrder($id, $direction)
{
$em = Database::getManager();
/** @var CLink $link */
$link = $em->find('ChamiloCourseBundle:CLink', $id);
if (!$link) {
return false;
}
$compareLinks = $em
->getRepository('ChamiloCourseBundle:CLink')
->findBy(
[
'cId' => $link->getCId(),
'categoryId' => $link->getCategoryId(),
],
['displayOrder' => $direction]
);
/** @var CLink $prevLink */
$prevLink = null;
/** @var CLink $compareLink */
foreach ($compareLinks as $compareLink) {
if ($compareLink->getId() !== $link->getId()) {
$prevLink = $compareLink;
continue;
}
if (!$prevLink) {
return false;
}
$newPrevLinkDisplayOrder = $link->getDisplayOrder();
$newLinkDisplayOrder = $prevLink->getDisplayOrder();
$link->setDisplayOrder($newLinkDisplayOrder);
$prevLink->setDisplayOrder($newPrevLinkDisplayOrder);
$em->merge($prevLink);
$em->merge($link);
break;
}
$em->flush();
return true;
}
}
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