1 | <?php |
||
7 | trait VisibleCondition |
||
8 | { |
||
9 | /** |
||
10 | * @var Closure|null |
||
11 | */ |
||
12 | protected $visibleCondition; |
||
13 | |||
14 | /** |
||
15 | * @return bool |
||
16 | */ |
||
17 | public function isVisible() |
||
25 | |||
26 | /** |
||
27 | * @param Closure $condition |
||
28 | * |
||
29 | * @return $this |
||
30 | */ |
||
31 | public function setVisibilityCondition(Closure $condition) |
||
37 | } |
||
38 |
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
Idable
provides a methodequalsId
that 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.