pointybeard / helpers-foundation-factory
Provides foundation factory classes and factory design pattern functionality
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Requires
- php: >=7.2
- pointybeard/helpers-functions-strings: ~1.1.0
README
- Version: v1.0.4
- Date: June 05 2019
- Release notes
- GitHub repository
Provides foundation factory classes and factory design pattern functionality
Installation
This library is installed via Composer. To install, use composer require pointybeard/helpers-foundation-factory
or add "pointybeard/helpers-foundation-factory": "~1.0.0"
to your composer.json
file.
And run composer to update your dependencies:
$ curl -s http://getcomposer.org/installer | php
$ php composer.phar update
Requirements
There are no particuar requirements for this library other than PHP 7.2 or greater.
To include all the PHP Helpers packages on your project, use composer require pointybeard/helpers
Usage
Include this library in your PHP files with use pointybeard\Helpers\Foundation\Factory
and extend the Factory\AbstractFactory
class like so:
<?php declare(strict_types=1); namespace MyApp; include __DIR__.'/vendor/autoload.php'; use pointybeard\Helpers\Foundation\Factory; interface VehicleInterface { public function name(): string; public function __toString(): string; } abstract class AbstractVehicle implements VehicleInterface { public function name(): string { return (new \ReflectionClass(static::class))->getShortName(); } } abstract class AbstractCar extends AbstractVehicle { public function __toString(): string { return "Hi! I'm a {$this->name()}."; } } abstract class AbstractTruck extends AbstractVehicle { public function __toString(): string { return "Hi! I'm a truck called {$this->name()}."; } } // Basic car class Volvo extends AbstractCar { } // Basic truck class Mack extends AbstractTruck { } // This adds a constructor which expects a model and vin number. They need // to be passed in when CarFactory::build() is called class Peugeot extends AbstractCar { private $model; private $vin; public function __construct(string $model, string $vin) { $this->model = $model; $this->vin = $vin; } public function __get(string $name) { return $this->$name; } public function __toString(): string { return parent::__toString()." I am a model {$this->model} with vehicle identification number {$this->vin}"; } } // a Cabbage is not a type of vehicle class Cabbage { } // Create a factory called MyApp\CarFactory Factory\create( __NAMESPACE__.'\\CarFactory', __NAMESPACE__.'\\%s', __NAMESPACE__.'\\AbstractCar' ); // Create a factory called MyApp\TruckFactory Factory\create( __NAMESPACE__.'\\TruckFactory', __NAMESPACE__.'\\%s', __NAMESPACE__.'\\AbstractTruck' ); // Create custom factory class class PeugeotFactory extends Factory\AbstractFactory { public function getTemplateNamespace(): string { return __NAMESPACE__.'\\%s'; } public function getExpectedClassType(): ?string { return __NAMESPACE__.'\\Peugeot'; } } $car = CarFactory::build('Volvo'); var_dump((string) $car); // string(16) "Hi! I'm a Volvo." $car = PeugeotFactory::build('Peugeot', '206', 'VF32HRHYF43242177'); var_dump((string) $car); // string(88) "Hi! I'm a Peugeot. I am a model 206 with vehicle identification number VF32HRHYF43242177" $truck = TruckFactory::build('Mack'); var_dump((string) $truck); // string(28) "Hi! I'm a truck called Mack." try { $car = PeugeotFactory::build('Volvo', 'XC60', 'YV1DZ8256C227123'); } catch (Factory\Exceptions\UnableToInstanciateConcreteClassException $ex) { echo 'Error: Cannot build a Volvo in the Peugeot factory!'.PHP_EOL; } // Error: Cannot build a Volvo in the Peugeot factory! try { CarFactory::build('Suzuki'); } catch (Factory\Exceptions\UnableToInstanciateConcreteClassException $ex) { echo 'Error: Unable to build a Suzuki. Returned: '.$ex->getMessage().PHP_EOL; } // Error: Unable to build a Suzuki. Returned: Class \MyApp\Suzuki does not exist try { CarFactory::build('Cabbage'); } catch (Factory\Exceptions\UnableToInstanciateConcreteClassException $ex) { echo 'Error: Unable to build a Cabbage. Returned: '.$ex->getMessage().PHP_EOL; } // Error: Unable to build a Cabbage. Returned: Class \MyApp\Cabbage is not // of expected type \MyApp\AbstractCar
Support
If you believe you have found a bug, please report it using the GitHub issue tracker, or better yet, fork the library and submit a pull request.
Contributing
We encourage you to contribute to this project. Please check out the Contributing documentation for guidelines about how to get involved.
License
"PHP Helpers: Factory Foundation Classes" is released under the MIT License.