1 | <?php |
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19 | abstract class ArraySource implements SourceInterface |
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20 | { |
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21 | /** |
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22 | * @var SourceInterface[] |
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23 | */ |
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24 | private $subSources = []; |
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25 | |||
26 | /** |
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27 | * @param string $path |
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28 | * @param ContainerBuilder $container |
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29 | * @param array $config |
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30 | */ |
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31 | public function load(string $path, ContainerBuilder $container, array $config) |
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38 | |||
39 | /** |
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40 | * {@inheritdoc} |
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41 | */ |
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42 | public function prepend(array $bundleConfig, string $path, ContainerBuilder $container) |
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48 | |||
49 | /** |
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50 | * {@inheritdoc} |
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51 | */ |
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52 | public function addConfiguration(NodeDefinition $node) |
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63 | |||
64 | /** |
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65 | * @param string $path |
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66 | * @param ContainerBuilder $container |
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67 | * @param array $config |
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68 | */ |
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69 | protected function continueLoading(string $path, ContainerBuilder $container, array $config) |
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72 | |||
73 | /** |
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74 | * @return string |
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75 | */ |
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76 | abstract protected function name(): string; |
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77 | |||
78 | /** |
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79 | * @param NodeDefinition $node |
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80 | */ |
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81 | protected function continueConfiguration(NodeDefinition $node) |
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85 | |||
86 | /** |
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87 | * @param SourceInterface $source |
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88 | */ |
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89 | protected function addSubSource(SourceInterface $source) |
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93 | } |
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94 |
Let’s take a look at an example:
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 sub-classes of User which does not have a getDisplayName() method, the code will break.
Available Fixes
Change the type-hint for the parameter:
Add an additional type-check:
Add the method to the parent class: