1: <?php
 2: 
 3: namespace Charcoal\Cms\Support\Traits;
 4: 
 5: // local dependencies
 6: use Charcoal\Cms\Support\Helpers\DateHelper;
 7: 
 8: // dependencies from `pimple`
 9: use Slim\Exception\ContainerException;
10: 
11: trait DateHelperAwareTrait
12: {
13:     /**
14:      * @var DateHelper $dateHelper
15:      */
16:     private $dateHelper;
17: 
18:     /**
19:      * @return DateHelper
20:      * @throws ContainerException When a dependency is missing.
21:      */
22:     protected function dateHelper()
23:     {
24:         if (!$this->dateHelper instanceof DateHelper) {
25:             throw new ContainerException(sprintf(
26:                 'Missing dependency for %s: %s',
27:                 get_called_class(),
28:                 DateHelper::class
29:             ));
30:         }
31: 
32:         return $this->dateHelper;
33:     }
34: 
35:     /**
36:      * @param DateHelper $dateHelper The date helper class.
37:      * @return self
38:      */
39:     protected function setDateHelper(DateHelper $dateHelper)
40:     {
41:         $this->dateHelper = $dateHelper;
42: 
43:         return $this;
44:     }
45: }
46: