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<?php
namespace Laravel\Nova\Fields;
trait HasThumbnail
{
/**
* The callback used to retrieve the thumbnail URL.
*
* @var callable
*/
public $thumbnailUrlCallback;
/**
* Specify the callback that should be used to retrieve the thumbnail URL.
*
* @param callable $thumbnailUrlCallback
* @return $this
*/
public function thumbnail(callable $thumbnailUrlCallback)
{
$this->thumbnailUrlCallback = $thumbnailUrlCallback;
return $this;
}
/**
* Resolve the thumbnail URL for the field.
*
* @return string|null
*/
public function resolveThumbnailUrl()
{
return call_user_func($this->thumbnailUrlCallback, $this->value, $this->getStorageDisk(), $this->resource);
}
}
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