sam-sepi / The-North-Observer

The North Remembers Observer pattern and Standard PHP Library

The North Observer

The North Remembers Observer pattern and Standard PHP Library

The North Observer was an exercise with the PHP Standard PHP Library and the design pattern Observer.

Getting Start

The Deaths class is the Subject of the Observer pattern and implements the related interface which provides the attach, detach, notify methods with which to communicate with the Observers. It also implements the JsonSerializable interface so as to write every update of the object within a .json document (i.e. the death of the various characters within the series A Song Of Ice and Fire). The class notifies observers of their status update. It is the addDeath method that allows you to update the class's death property.

use North\Deaths;

$deaths = new Deaths();
                //Nome, Casa, Titolo del libro
$deaths->addDeath('Weimar', 'Royce', 'A game of thrones');

Observers are the main houses in the North of Westeros, a world created by George RR Martin for the series A Song of Ice and Fire. Upon notification of the change of state of the Subject (an update of the deaths in the main books), Observers they react by updating themselves and changing the list of live or dead members of the House. Observers extend the abstract class House which implements the SplObserver interface and the related update method.

use North\Deaths;
use North\Mormont;
use North\Stark;
use North\Karstark;

$deaths = new Deaths('deaths.json');
$print = $deaths->getDeaths();
$mormont = new Mormont();
$stark = new Stark();
$karstark = new Karstark();

$deaths->attach($mormont); //observ. binds
$deaths->attach($stark);
$deaths->attach($karstark);
$deaths->notify(); //notify changes

Author

Sam Sepi - Initial work

License

This project is licensed under the MIT License - see the LICENSE.md file for details