Re: Saving geolocation data to session with timeout or better approach?

You can solve this by making a simple getter/setter pair for the session to have a single source of "truth" :)

Here's a snippet that might get you started (I haven't really tested it):

class MyComponent extends Component {    

    public static function getLocation(){

        if (self::$_cachedLocation !== null) {

            return self::$_cachedLocation;

        }

        if (

                CakeSession::check('Location.expires')

                && time() > CakeSession::read('Location.expires')

            ){

            CakeSession::delete('Location');

            self::$_cachedLocation = null;

            return false; // or get new?

        }

        else {

            $return = CakeSession::read('Location');

            self::$_cachedLocation = $return;

            return self::$_cachedLocation;

        }

    }

    

    public static function setLocation($data, $expireInHours) {

        $data['expires'] = time() + round($expireInHours * 3600);

        if (CakeSession::write('Location', $data)){

            self::$_cachedLocation = $data;

            return self::$_cachedLocation;

        }

    }

}

You can use this anywhere by using it as a static method call:

$location = MyComponent::getLocation();

if (!$location) { //... get new location data }

MyComponent::setLocation($locationData, 2); //would expire in 2 hours

By caching the result, you make sure your data doesn't "disappear" mid-request.

You could also put the expiration mechanism inside an app-wide beforeFilter? callback, but it makes more sense to check for it only when you need it, to avoid the small overhead.

Hope it helps.

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