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<?php |
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namespace TreeHouse\IoBundle\Item\Modifier\Item\Transformer; |
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use Symfony\Component\HttpFoundation\ParameterBag; |
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use TreeHouse\Feeder\Exception\UnexpectedTypeException; |
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use TreeHouse\Feeder\Modifier\Item\Transformer\TransformerInterface; |
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/** |
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* Transforms serialized (XML) node into a text field:. |
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* |
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* Example: |
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* |
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* ``` |
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* link => [ |
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* rel => external |
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* # => http://example.org |
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* ] |
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* ``` |
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* |
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* becomes: |
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* |
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* ``` |
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* link => http://example.org |
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* ``` |
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*/ |
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class NodeToTextTransformer implements TransformerInterface |
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{ |
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/** |
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* @var string |
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*/ |
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protected $field; |
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/** |
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* @param string $field Transform a specific field, if omitted, all root-level fields are transformed |
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* |
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* @throws UnexpectedTypeException |
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*/ |
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public function __construct($field = null) |
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{ |
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if (!is_string($field) && !is_null($field)) { |
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throw new UnexpectedTypeException($field, 'string or null'); |
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} |
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$this->field = $field; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function transform(ParameterBag $item) |
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{ |
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$keys = $this->field ? [$this->field] : $item->keys(); |
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$this->replace($item, $keys); |
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} |
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/** |
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* @param ParameterBag $item |
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* @param array $keys |
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*/ |
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protected function replace(ParameterBag $item, array $keys) |
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{ |
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foreach ($keys as $key) { |
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if (!$item->has($key)) { |
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continue; |
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} |
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$value = $item->get($key); |
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// if value is an array with a hash, that's a serialized node's text value |
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if (is_array($value) && array_key_exists('#', $value)) { |
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$item->set($key, $value['#']); |
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} |
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} |
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} |
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} |
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treehouselabs /
io-bundle
