Completed
Pull Request — master (#77)
by Łukasz
02:27
created

ProductVariantViewFactory::create()   A

Complexity

Conditions 2
Paths 2

Size

Total Lines 19
Code Lines 12

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
dl 0
loc 19
rs 9.4285
c 0
b 0
f 0
cc 2
eloc 12
nc 2
nop 3
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<?php
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namespace Sylius\ShopApiPlugin\Factory;
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use Sylius\Component\Core\Model\ChannelInterface;
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use Sylius\Component\Core\Model\ProductVariantInterface;
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use Sylius\ShopApiPlugin\View\ProductVariantView;
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final class ProductVariantViewFactory implements ProductVariantViewFactoryInterface
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{
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    /**
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     * @var PriceViewFactoryInterface
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     */
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    private $priceViewFactory;
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    /**
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     * @param PriceViewFactoryInterface $priceViewFactory
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     */
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    public function __construct(PriceViewFactoryInterface $priceViewFactory)
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    {
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        $this->priceViewFactory = $priceViewFactory;
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    }
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    /**
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     * {@inheritdoc}
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     */
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    public function create(ProductVariantInterface $variant, ChannelInterface $channel, $locale)
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    {
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        $variantView = new ProductVariantView();
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        $variantView->code = $variant->getCode();
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        $variantView->name = $variant->getTranslation($locale)->getName();
0 ignored issues
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Bug introduced by
It seems like you code against a concrete implementation and not the interface Sylius\Component\Resourc...el\TranslationInterface as the method getName() does only exist in the following implementations of said interface: Sylius\Component\Attribu...el\AttributeTranslation, Sylius\Component\Core\Model\ProductTranslation, Sylius\Component\Payment...aymentMethodTranslation, Sylius\Component\Product...ociationTypeTranslation, Sylius\Component\Product...uctAttributeTranslation, Sylius\Component\Product...roductOptionTranslation, Sylius\Component\Product\Model\ProductTranslation, Sylius\Component\Product...oductVariantTranslation, Sylius\Component\Shippin...ippingMethodTranslation, Sylius\Component\Taxonomy\Model\TaxonTranslation.

Let’s take a look at an example:

interface User
{
    /** @return string */
    public function getPassword();
}

class MyUser implements User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}

In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different implementation of User which does not have a getDisplayName() method, the code will break.

Available Fixes

  1. Change the type-hint for the parameter:

    class AuthSystem
    {
        public function authenticate(MyUser $user) { /* ... */ }
    }
    
  2. Add an additional type-check:

    class AuthSystem
    {
        public function authenticate(User $user)
        {
            if ($user instanceof MyUser) {
                $this->logger->info(/** ... */);
            }
    
            // or alternatively
            if ( ! $user instanceof MyUser) {
                throw new \LogicException(
                    '$user must be an instance of MyUser, '
                   .'other instances are not supported.'
                );
            }
    
        }
    }
    
Note: PHP Analyzer uses reverse abstract interpretation to narrow down the types inside the if block in such a case.
  1. Add the method to the interface:

    interface User
    {
        /** @return string */
        public function getPassword();
    
        /** @return string */
        public function getDisplayName();
    }
    
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        $variantView->price = $this->priceViewFactory->create($variant->getChannelPricingForChannel($channel)->getPrice());
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        foreach ($variant->getOptionValues() as $optionValue) {
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            $variantView->axis[] = $optionValue->getCode();
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            $variantView->nameAxis[$optionValue->getCode()] = sprintf(
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                '%s %s',
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                $optionValue->getOption()->getTranslation($locale)->getName(),
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                $optionValue->getTranslation($locale)->getValue()
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            );
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        }
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        return $variantView;
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    }
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}
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