Viewing file:  Conditionable.php (1.91 KB) -rw-r--r--
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<?php
namespace Illuminate\Support\Traits;
use Closure;
use Illuminate\Support\HigherOrderWhenProxy;
trait Conditionable
{
/**
* Apply the callback if the given "value" is (or resolves to) truthy.
*
* @template TWhenParameter
* @template TWhenReturnType
*
* @param (\Closure($this): TWhenParameter)|TWhenParameter $value
* @param (callable($this, TWhenParameter): TWhenReturnType)|null $callback
* @param (callable($this, TWhenParameter): TWhenReturnType)|null $default
* @return $this|TWhenReturnType
*/
public function when($value, callable $callback = null, callable $default = null)
{
$value = $value instanceof Closure ? $value($this) : $value;
if (! $callback) {
return new HigherOrderWhenProxy($this, $value);
}
if ($value) {
return $callback($this, $value) ?? $this;
} elseif ($default) {
return $default($this, $value) ?? $this;
}
return $this;
}
/**
* Apply the callback if the given "value" is (or resolves to) falsy.
*
* @template TUnlessParameter
* @template TUnlessReturnType
*
* @param (\Closure($this): TUnlessParameter)|TUnlessParameter $value
* @param (callable($this, TUnlessParameter): TUnlessReturnType)|null $callback
* @param (callable($this, TUnlessParameter): TUnlessReturnType)|null $default
* @return $this|TUnlessReturnType
*/
public function unless($value, callable $callback = null, callable $default = null)
{
$value = $value instanceof Closure ? $value($this) : $value;
if (! $callback) {
return new HigherOrderWhenProxy($this, ! $value);
}
if (! $value) {
return $callback($this, $value) ?? $this;
} elseif ($default) {
return $default($this, $value) ?? $this;
}
return $this;
}
}
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