Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
| 1 | <?php namespace Distilleries\Expendable\Models; |
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| 4 | trait LockableTrait |
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| 5 | { |
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| 6 | protected $config_key_security_lock = 'expendable.auth.nb_of_try'; |
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| 7 | protected $column_nb_of_try_name = 'nb_of_try'; |
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| 8 | |||
| 9 | 4 | public function isLocked() |
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| 15 | |||
| 16 | public function incrementLock() |
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| 26 | |||
| 27 | 12 | View Code Duplication | public function unlock() |
| 38 | |||
| 39 | View Code Duplication | public function lock() |
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| 49 | |||
| 50 | } |
This check looks for methods that are used by a trait but not required by it.
To illustrate, let’s look at the following code example
The trait
Idableprovides a methodequalsIdthat in turn relies on the methodgetId(). If this method does not exist on a class mixing in this trait, the method will fail.Adding the
getId()as an abstract method to the trait will make sure it is available.