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<?php |
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namespace TreeHouse\Feeder\Modifier\Item\Transformer; |
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use Symfony\Component\HttpFoundation\ParameterBag; |
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class ExpandNodeTransformer 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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* @var bool |
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*/ |
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protected $removeOriginal; |
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/** |
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* @var array |
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*/ |
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protected $overwriteExisting; |
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/** |
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* @param string $field Expand nodes in this field |
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* @param bool $removeOriginal Whether to remove the original node |
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* @param array $overwriteExisting Keys that may be overwritten when they already exist |
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*/ |
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public function __construct($field, $removeOriginal = false, array $overwriteExisting = []) |
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{ |
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$this->field = $field; |
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$this->removeOriginal = $removeOriginal; |
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$this->overwriteExisting = $overwriteExisting; |
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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 $item) |
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{ |
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if ($item->has($this->field)) { |
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$value = $item->get($this->field); |
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// check if the field is an array |
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if (is_array($value)) { |
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$this->expand($value, $item); |
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} |
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// remove the compound field if requested |
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if ($this->removeOriginal) { |
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$item->remove($this->field); |
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} |
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} |
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} |
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/** |
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* @param array $value |
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* @param ParameterBag $item |
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*/ |
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protected function expand(array $value, ParameterBag $item) |
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{ |
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foreach ($value as $key => $val) { |
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// if key already exists, check if we may overwrite it |
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if ($item->has($key)) { |
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if (!in_array($key, $this->overwriteExisting)) { |
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continue; |
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} |
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} |
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$item->set($key, $val); |
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} |
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} |
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} |
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treehouselabs /
feeder
