1 | <?php |
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8 | class RedisFactory extends AbstractFactory |
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9 | { |
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10 | const MODULE_NAME = 'redis'; |
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11 | |||
12 | /** |
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13 | * @return string |
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14 | */ |
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15 | public function getModuleName() |
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19 | |||
20 | /** |
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21 | * @return \Redis |
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22 | */ |
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23 | protected function getRedisAdapter() |
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27 | |||
28 | /** |
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29 | * @param CacheProvider $cacheProvider |
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30 | * |
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31 | * @return CacheProvider |
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32 | */ |
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33 | protected function decorateWithConnectable(CacheProvider $cacheProvider) |
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43 | |||
44 | /** |
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45 | * @param Config $config |
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46 | * |
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47 | * @return bool |
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48 | */ |
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49 | protected function isValidConfig(Config $config) |
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62 | } |
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63 |
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: