diff --git a/datamodels/2.x/itop-portal-base/portal/src/Twig/AppExtension.php b/datamodels/2.x/itop-portal-base/portal/src/Twig/AppExtension.php
index 92dd8c681..1edf83ab7 100644
--- a/datamodels/2.x/itop-portal-base/portal/src/Twig/AppExtension.php
+++ b/datamodels/2.x/itop-portal-base/portal/src/Twig/AppExtension.php
@@ -19,25 +19,16 @@
 
 namespace Combodo\iTop\Portal\Twig;
 
-use AttributeDate;
-use AttributeDateTime;
-use AttributeText;
-use Closure;
-use Dict;
-use Exception;
-use IssueLog;
-use Twig\Environment;
+use Combodo\iTop\Application\TwigBase\Twig\Extension;
 use Twig\Extension\AbstractExtension;
-use Twig\Loader\FilesystemLoader;
-use Twig\TwigFilter;
-use Twig\TwigFunction;
-use utils;
 
 
 /**
  * Class AppExtension
  *
- * @package Combodo\iTop\Portal\Twig
+ * Automatically loaded by portal's Symfony configuration to register TWIG extensions.
+ * The class must be kept by it is using the factorized filters/functions of the iTop core.
+ *
  * @since   2.7.0
  * @author  Bruno Da Silva <bruno.dasilva@combodo.com>
  * @deprected 3.1.0 N°4287
@@ -45,256 +36,18 @@ use utils;
 class AppExtension extends AbstractExtension
 {
 	/**
-	 * @return array|\Twig\TwigFilter[]|\Twig\TwigFilter[]
+	 * @inheritDoc
 	 */
 	public function getFilters()
 	{
-		$filters = array();
-		// Filter to translate a string via the Dict::S function
-		// Usage in twig: {{ 'String:ToTranslate'|dict_s }}
-		$filters[] = new TwigFilter('dict_s',
-			function ($sStringCode, $sDefault = null, $bUserLanguageOnly = false) {
-				return Dict::S($sStringCode, $sDefault, $bUserLanguageOnly);
-			}
-		);
-
-		// Filter to format a string via the Dict::Format function
-		// Usage in twig: {{ 'String:ToTranslate'|dict_format() }}
-		$filters[] = new TwigFilter('dict_format',
-			function ($sStringCode, $sParam01 = null, $sParam02 = null, $sParam03 = null, $sParam04 = null) {
-				return Dict::Format($sStringCode, $sParam01, $sParam02, $sParam03, $sParam04);
-			}
-		);
-
-		/**
-		 * Filter to format output
-		 * example a DateTime is converted to user format
-		 * Usage in twig: {{ 'String:ToFormat'|output_format }}
-		 *
-		 * @since 3.0.0
-		 */
-		$filters[] = new TwigFilter('date_format',
-			function ($sDate) {
-				try
-				{
-					if (preg_match('@^\d\d\d\d-\d\d-\d\d \d\d:\d\d:\d\d$@', trim($sDate)))
-					{
-						return AttributeDateTime::GetFormat()->Format($sDate);
-					}
-					if (preg_match('@^\d\d\d\d-\d\d-\d\d$@', trim($sDate)))
-					{
-						return AttributeDate::GetFormat()->Format($sDate);
-					}
-				}
-				catch (Exception $e)
-				{
-				}
-
-				return $sDate;
-			}
-		);
-
-		/**
-		 * Filter to format output
-		 * example a DateTime is converted to user format
-		 * Usage in twig: {{ 'String:ToFormat'|output_format }}
-		 *
-		 * @since 3.0.0
-		 */
-		$filters[] = new TwigFilter('size_format',
-			function ($sSize) {
-				return utils::BytesToFriendlyFormat($sSize);
-			}
-		);
-
-		// Filter to enable base64 encode/decode
-		// Usage in twig: {{ 'String to encode'|base64_encode }}
-		$filters[] = new TwigFilter('base64_encode', 'base64_encode');
-		$filters[] = new TwigFilter('base64_decode', 'base64_decode');
-
-		// Filter to enable json decode  (encode already exists)
-		// Usage in twig: {{ aSomeArray|json_decode }}
-		$filters[] = new TwigFilter('json_decode', function ($sJsonString, $bAssoc = false) {
-				return json_decode($sJsonString, $bAssoc);
-			}
-		);
-
-		/**
-		 * Filter to sanitize a text
-		 * Usage in twig: {{ 'variable_name:to-sanitize'|sanitize(constant('utils::ENUM_SANITIZATION_FILTER_VARIABLE_NAME')) }}
-		 *
-		 * @uses \utils::Sanitize()
-		 * @since 3.0.0
-		 */
-		$filters[] = new TwigFilter('sanitize', function (string $sString, string $sFilter) {
-				return utils::Sanitize($sString, '', $sFilter);
-			}
-		);
-
-		/**
-		 * Filter to transform the wiki syntax ONLY into HTML.
-		 *
-		 * @uses \AttributeText::RenderWikiHtml()
-		 * @since 3.0.0
-		 */
-		$filters[] = new TwigFilter('render_wiki_to_html', function ($sString) {
-				return AttributeText::RenderWikiHtml($sString, true /* Important, otherwise hyperlinks will be tranformed as well */);
-			}
-		);
-
-		// Filter to add itopversion to an url
-		$filters[] = new TwigFilter('add_itop_version', function ($sUrl) {
-			$sUrl = utils::AddParameterToUrl($sUrl, 'itopversion', ITOP_VERSION);
-
-			return $sUrl;
-		});
-
-		// Filter to add a module's version to an url
-		$filters[] = new TwigFilter('add_module_version', function ($sUrl, $sModuleName) {
-			$sModuleVersion = utils::GetCompiledModuleVersion($sModuleName);
-			$sUrl = utils::AddParameterToUrl($sUrl, 'moduleversion', $sModuleVersion);
-
-			return $sUrl;
-		});
-
-		/**
-		 * var_export can be used for example to transform a PHP boolean to 'true' or 'false' strings
-		 * @see https://www.php.net/manual/fr/function.var-export.php
-		 *
-		 * @since 3.0.0
-		 */
-		$filters[] = new TwigFilter('var_export', 'var_export');
-
-		//since 2.7.7 3.0.2 3.1.0 N°4867 "Twig content not allowed" error when use the extkey widget search icon in the user portal
-		// Since 2.7.8 filter more functions as filter 'filter' is used by the portal
-		$filters[] = new TwigFilter('filter', function ($array, $arrow) {
-			$ret = $this->SanitizeFilter($array, $arrow);
-			if ($ret !== false) {
-				IssueLog::Error('Twig "filter" filter has limited capabilities');
-				return [$ret];
-			}
-			$oEnv = new Environment(new FilesystemLoader());
-			return twig_array_filter($oEnv, $array, $arrow);
-		});
-		// Since 2.7.8 deactivate map
-		$filters[] = new TwigFilter('map', function ($array, $arrow) {
-			IssueLog::Error('Twig "map" filter is deactivated');
-			return $array;
-		});
-		// Since 2.7.8 deactivate reduce
-		$filters[] = new TwigFilter('reduce', function ($array, $arrow, $initial = null) {
-			IssueLog::Error('Twig "reduce" filter is deactivated');
-			return $array;
-		});
-		$filters[] = new TwigFilter('sort', function ($array, $arrow, $initial = null) {
-			IssueLog::Error('Twig "sort" filter is deactivated');
-			return $array;
-		});
-		return $filters;
-	}
-
-	private function SanitizeFilter($array, $arrow)
-	{
-		$aRestricted = [
-			'system',
-			'exec',
-			'passthru',
-			'popen',
-			'proc_open',
-			'shell_exec',
-			'file_get_contents',
-			'file_put_contents',
-			'eval',
-			'pcntl_exec',
-			'chgrp',
-			'chmod',
-			'chown',
-			'lchgrp',
-			'lchown',
-			'umask',
-			'copy',
-			'delete',
-			'unlink',
-			'link',
-			'mkdir',
-			'rmdir',
-			'rename',
-			'symlink',
-			'tempnam',
-			'tmpfile',
-			'touch',
-			'fgetc',
-			'fgetcsv',
-			'fgets',
-			'fgetss',
-			'file',
-			'flock',
-			'fopen',
-			'fpassthru',
-			'fputcsv',
-			'fputs',
-			'fread',
-			'fscanf',
-			'ftruncate',
-			'fwrite',
-			'glob',
-			'readfile',
-			'readlink',
-			'parse_ini_file',
-			'mail',
-		];
-		$aRestrictedStartWith = ['ftp_', 'zip_', 'stream_'];
-
-		if (is_string($arrow)) {
-			if (in_array(strtolower($arrow), $aRestricted)) {
-				return json_encode($array);
-			}
-			foreach ($aRestrictedStartWith as $sRestrictedStartWith) {
-				if (utils::StartsWith($arrow, $sRestrictedStartWith)) {
-					return json_encode($array);
-				}
-			}
-		} elseif ($arrow instanceof Closure) {
-			return json_encode($array);
-		}
-		return false;
+		return Extension::GetFilters();
 	}
 
 	/**
-	 * @return array|\Twig\TwigFunction[]|\Twig\TwigFunction[]
+	 * @inheritDoc
 	 */
 	public function getFunctions()
 	{
-		$functions = array();
-
-		// Function to check our current environment
-		// Usage in twig:   {% if is_development_environment() %}
-		$functions[] = new TwigFunction('is_development_environment', function () {
-			return utils::IsDevelopmentEnvironment();
-		});
-
-		/**
-		 * Function to get iTop's app root absolute URL (eg. https://aaa.bbb.ccc/xxx/yyy/)
-		 * Usage in twig: {{ get_absolute_url_app_root() }}
-		 *
-		 * @since 3.0.0
-		 */
-		$functions[] = new TwigFunction('get_absolute_url_app_root', function () {
-			return utils::GetAbsoluteUrlAppRoot();
-		});
-
-		/**
-		 * Function to get iTop's modules root absolute URL (eg. https://aaa.bbb.ccc/xxx/yyy/env-zzz/)
-		 * Usage in twig: {{ get_absolute_url_modules_root() }}
-		 *
-		 * @since 3.0.0
-		 */
-		$functions[] = new TwigFunction('get_absolute_url_modules_root', function () {
-			return utils::GetAbsoluteUrlModulesRoot();
-		});
-
-		return $functions;
+		return Extension::GetFunctions();
 	}
-
-
 }
\ No newline at end of file