protected function _getValidationRules(Model $model) {
		$cachePath = 'validation_rules_' . $model->alias;
		$cached = Cache::read($cachePath, CAKE_LDAP_CACHE_KEY_CONFIG);
		if ($cached !== false) {
			return $cached;
		}

		$ldapFields = $this->_modelConfigSync->getLdapFieldsInfo();
		if (empty($ldapFields)) {
			return false;
		}

		$ldapField = $this->_getLdapField($model);
		if (empty($ldapField)) {
			return false;
		}

		$result = Hash::get($ldapFields, $ldapField . '.rules');
		if (empty($result)) {
			$result = true;
		}
		Cache::write($cachePath, $result, CAKE_LDAP_CACHE_KEY_CONFIG);

		return $result;
	}