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1 | <?php | |
2 | ||
3 | namespace Wallabag\CoreBundle\Form\DataTransformer; | |
4 | ||
5 | use Doctrine\Common\Persistence\ObjectManager; | |
6 | use Symfony\Component\Form\DataTransformerInterface; | |
7 | use Symfony\Component\Form\Exception\TransformationFailedException; | |
8 | ||
9 | /** | |
10 | * Transforms a comma-separated list to a proper PHP array. | |
11 | * Example: the string "foo, bar" will become the array ["foo", "bar"] | |
12 | */ | |
13 | class StringToListTransformer implements DataTransformerInterface | |
14 | { | |
15 | /** | |
16 | * @var string | |
17 | */ | |
18 | private $separator; | |
19 | ||
20 | /** | |
21 | * @param string $separator The separator used in the list. | |
22 | */ | |
23 | public function __construct($separator = ',') | |
24 | { | |
25 | $this->separator = $separator; | |
26 | } | |
27 | ||
28 | /** | |
29 | * Transforms a list to a string. | |
30 | * | |
31 | * @param array|null $list | |
32 | * | |
33 | * @return string | |
34 | */ | |
35 | public function transform($list) | |
36 | { | |
37 | if (null === $list) { | |
38 | return ''; | |
39 | } | |
40 | ||
41 | return implode($this->separator, $list); | |
42 | } | |
43 | ||
44 | /** | |
45 | * Transforms a string to a list. | |
46 | * | |
47 | * @param string $string | |
48 | * | |
49 | * @return array|null | |
50 | */ | |
51 | public function reverseTransform($string) | |
52 | { | |
53 | if ($string === null) { | |
54 | return null; | |
55 | } | |
56 | ||
57 | return array_values(array_filter(array_map('trim', explode($this->separator, $string)))); | |
58 | } | |
59 | } |