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<?php |
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namespace luya\web\jsonld; |
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use yii\base\Arrayable; |
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use yii\base\ArrayableTrait; |
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use luya\helpers\StringHelper; |
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use yii\base\BaseObject; |
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/** |
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* Base Thing. |
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* |
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* Every JsonLD object must implement BaseThing. Therfore BaseThing auto resolves the fields, in |
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* order to provide the Arrayable::fields() methods. |
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* |
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* @author Basil Suter <[email protected]> |
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*/ |
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abstract class BaseThing extends BaseObject implements Arrayable, ThingInterface |
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{ |
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use ThingTrait; |
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use ArrayableTrait { toArray as protected internalToArray; } |
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/** |
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* Contains the jsonLd definton @type value if not null or false. |
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* |
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* @return boolean|string Generates the @type field. |
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*/ |
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public function typeDefintion() |
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{ |
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return false; |
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} |
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/** |
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* Find all getter methods. |
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* |
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* @return array |
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*/ |
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public function resolveGetterMethods() |
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{ |
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$resolved = []; |
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$methods = get_class_methods($this); |
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if (!$methods) { |
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return []; |
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} |
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foreach ($methods as $method) { |
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if (StringHelper::startsWith($method, 'get', true)) { |
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$resolved[] = lcfirst(StringHelper::replaceFirst('get', '', $method)); |
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} |
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} |
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asort($resolved); |
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return $resolved; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function toArray(array $fields = [], array $expand = [], $recursive = true) |
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{ |
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$array = $this->removeEmptyValues($this->internalToArray($fields, $expand, $recursive)); |
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if ($this->typeDefintion()) { |
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$array['@type'] = $this->typeDefintion(); |
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} |
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return $array; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function fields() |
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{ |
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return $this->resolveGetterMethods(); |
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} |
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/** |
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* Cleanup array from null values. |
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* |
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* @param array $haystack |
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* @return array |
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*/ |
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private function removeEmptyValues(array $haystack) |
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{ |
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foreach ($haystack as $key => $value) { |
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if (is_array($value)) { |
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$haystack[$key] = $this->removeEmptyValues($value); |
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} |
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// remove empty values as there is no property which allows empty values. |
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if (empty($value)) { |
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unset($haystack[$key]); |
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} |
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} |
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return $haystack; |
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} |
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} |
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luyadev /
luya
This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent.
Consider making the comparison explicit by using
empty(..)or! empty(...)instead.