tobytwigger /
nus-unioncloud-api-wrapper
| 1 | <?php |
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| 2 | /** |
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| 3 | * Resource Collection Helper Class |
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| 4 | */ |
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| 5 | |||
| 6 | namespace Twigger\UnionCloud\API; |
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| 7 | |||
| 8 | |||
| 9 | use Twigger\UnionCloud\API\Exception\Resource\ResourceNotFoundException; |
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| 10 | |||
| 11 | /** |
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| 12 | * Contains a wrapper for an array, providing helpful functions. |
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| 13 | * |
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| 14 | * Designed with classes implementing IResource in mind |
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| 15 | * |
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| 16 | * Class ResourceCollection |
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| 17 | * |
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| 18 | * @package Twigger\UnionCloud\API\Core |
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| 19 | */ |
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| 20 | class ResourceCollection implements \IteratorAggregate |
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| 21 | {
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| 22 | |||
| 23 | /** |
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| 24 | * @var array $resources The plain array |
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| 25 | */ |
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| 26 | private $resources = []; |
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| 27 | |||
| 28 | /** |
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| 29 | * ResourceCollection constructor. |
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| 30 | */ |
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| 31 | public function __construct() |
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| 32 | {
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| 33 | |||
| 34 | } |
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| 35 | |||
| 36 | /** |
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| 37 | * Add an element to the array |
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| 38 | * |
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| 39 | * @param mixed Resource to add |
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| 40 | * |
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| 41 | * @return void |
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| 42 | */ |
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| 43 | public function addResource($resource) |
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| 44 | {
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| 45 | $this->resources[] = $resource; |
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| 46 | } |
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| 47 | |||
| 48 | /** |
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| 49 | * Add multiple resources to the collection |
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| 50 | * |
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| 51 | * @param mixed[] $resources Arrays of resources to add to the collection |
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| 52 | */ |
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| 53 | public function addResources($resources) |
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| 54 | {
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| 55 | $this->resources = array_merge($this->resources, $resources); |
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| 56 | } |
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| 57 | |||
| 58 | /** |
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| 59 | * Return the plain array as an array |
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| 60 | * |
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| 61 | * @return array |
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| 62 | */ |
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| 63 | public function toArray() |
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| 64 | {
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| 65 | return $this->resources; |
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| 66 | } |
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| 67 | |||
| 68 | /** |
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| 69 | * Return a JSON representation of the resource collection |
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| 70 | * |
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| 71 | * @return string|false |
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| 72 | */ |
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| 73 | public function toJson() |
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| 74 | {
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| 75 | return json_encode($this->resources); |
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| 76 | } |
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| 77 | |||
| 78 | /** |
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| 79 | * Return the first resource in the collection |
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| 80 | * |
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| 81 | * @return mixed |
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| 82 | * |
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| 83 | * @throws ResourceNotFoundException |
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| 84 | */ |
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| 85 | public function first() |
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| 86 | {
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| 87 | if (!isset($this->resources[0])) |
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| 88 | {
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| 89 | throw new ResourceNotFoundException('No resources were found.', 404);
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| 90 | } |
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| 91 | return $this->resources[0]; |
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| 92 | } |
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| 93 | |||
| 94 | /** |
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| 95 | * Create an array populated by the key in each of the models |
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| 96 | * |
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| 97 | * @param string $key |
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| 98 | * |
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| 99 | * @return array |
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| 100 | */ |
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| 101 | public function pluck($key) |
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| 102 | {
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| 103 | $values = array(); |
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| 104 | |||
| 105 | foreach($this->resources as $resource) |
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| 106 | {
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| 107 | if(($value = $resource->$key) !== false) |
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| 108 | {
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| 109 | $values[] = $value; |
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| 110 | } |
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| 111 | } |
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| 112 | |||
| 113 | return $values; |
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| 114 | } |
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| 115 | |||
| 116 | /** |
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| 117 | * Allow iteration over the elements in the collection |
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| 118 | * |
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| 119 | * @return \Traversable|ArrayIterator |
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| 120 | */ |
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| 121 | public function getIterator() {
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| 122 | return new \ArrayIterator( $this->resources ); |
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| 123 | } |
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| 124 | |||
| 125 | } |