kop / yii2-scroll-pager

            if (in_array($name, $this->enabledExtensions)) {

                // Make sure dependencies are met

                if (!$this->checkEnabledExtensions($depends)) {

                    throw new InvalidConfigException(

                        "Extension {$name} requires " . implode(', ', $depends) . " extensions to be enabled."

                    );

                }

                // Register extension

                $options = Json::encode($options);

            if (!empty($this->$eventName)) {

                // Make sure dependencies are met

                if (!$this->checkEnabledExtensions($depends)) {

                    throw new InvalidConfigException(

                        "The \"{$name}\" event requires " . implode(', ', $depends) . " extensions to be enabled."

                    );

                }

				// Replace the variable template

				$callback = str_replace('{{ias}}', "{$this->id}_ias", $this->$eventName);