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<?php |
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namespace roaresearch\yii2\roa\hal; |
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use yii\base\Arrayable; |
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use yii\base\ArrayableTrait; |
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use yii\helpers\ArrayHelper; |
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use yii\web\Link; |
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use yii\web\Linkable; |
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/** |
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* Interface to get a the information of a file associated to a model. |
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* |
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* @author Angel (Faryshta) Guevara <[email protected]> |
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*/ |
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trait EmbeddableTrait |
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{ |
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use ArrayableTrait; |
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/** |
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* @inheritdoc |
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*/ |
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public abstract function fields(); |
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/** |
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* @inheritdoc |
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*/ |
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public abstract function extraFields(); |
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/** |
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* @inheritdoc |
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*/ |
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public function toArray( |
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array $fields = [], |
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array $expand = [], |
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$recursive = true |
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) { |
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$data = []; |
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foreach ($this->resolveFieldList($fields) as $field => $definition) { |
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$data[$field] = $this->processField($field, $definition); |
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} |
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foreach ($this->resolveExpandList($expand) as $field => $definition) { |
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$attribute = $this->processField($field, $definition); |
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if ($recursive) { |
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$nestedFields = $this->extractFieldsFor($fields, $field); |
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$nestedExpand = $this->extractFieldsFor($expand, $field); |
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if ($attribute instanceof Arrayable) { |
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$attribute = $attribute->toArray( |
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$nestedFields, |
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$nestedExpand |
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); |
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} elseif (is_array($attribute)) { |
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$attribute = array_map( |
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function ($item) use ($nestedFields, $nestedExpand) { |
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if ($item instanceof Arrayable) { |
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return $item->toArray( |
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$nestedFields, |
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$nestedExpand |
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); |
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} |
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return $item; |
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}, |
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$attribute |
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); |
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} |
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} |
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if ($envelope = $this->getExpandEnvelope()) { |
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$data[$envelope][$field] = $attribute; |
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} else { |
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$data[$field] = $attribute; |
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} |
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} |
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if ($this instanceof Linkable) { |
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$data['_links'] = Link::serialize($this->getLinks()); |
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} |
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return $recursive ? ArrayHelper::toArray($data) : $data; |
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} |
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/** |
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* @return string property which will contain all the expanded parameters. |
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*/ |
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public function getExpandEnvelope(): string |
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{ |
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return Embeddable::EMBEDDED_PROPERTY; |
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} |
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/** |
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* Determines which fields can be returned by [[toArray()]]. |
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* This method will first extract the root fields from the given fields. |
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* Then it will check the requested root fields against those declared in |
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* [[fields()]] to determine which fields can be returned. |
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* |
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* @param array $fields the fields being requested for exporting |
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* @return array the list of fields to be exported. The array keys are the |
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* field names, and the array values are the corresponding object property |
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* names or PHP callables returning the field values. |
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*/ |
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View Code Duplication |
protected function resolveFieldList($fields): array |
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{ |
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$fields = $this->extractRootFields($fields); |
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$result = []; |
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foreach ($this->fields() as $field => $definition) { |
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if (is_int($field)) { |
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$field = $definition; |
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} |
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if (empty($fields) || in_array($field, $fields, true)) { |
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$result[$field] = $definition; |
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} |
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} |
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return $result; |
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} |
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/** |
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* Determines which expand fields can be returned by [[toArray()]]. |
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* This method will first extract the root fields from the given expand. |
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* Then it will check the requested root fields against those declared in |
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* [[extraFields()]] to determine which fields can be returned. |
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* |
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* @param array $expand the expand fields being requested for exporting |
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* @return array the list of fields to be exported. The array keys are the |
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* field names, and the array values are the corresponding object property |
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* names or PHP callables returning the field values. |
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*/ |
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View Code Duplication |
protected function resolveExpandList($expand): array |
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{ |
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if (empty($expand)) { |
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return []; |
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} |
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$fields = $this->extractRootFields($expand); |
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$result = []; |
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foreach ($this->extraFields() as $field => $definition) { |
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if (is_int($field)) { |
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$field = $definition; |
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} |
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if (in_array($field, $fields, true)) { |
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$result[$field] = $definition; |
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} |
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} |
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return $result; |
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} |
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/** |
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* @param string $field name of the field to be resolved. |
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* @param string|callable $definition the field definition, it its an string |
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* it will be used as a property name, or a callable with signature. |
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* |
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* ```php |
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* function ($model, string $field) |
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* ``` |
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* @return mixed data obtained from the model. |
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*/ |
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protected function processField($field, $definition) |
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{ |
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return is_string($definition) |
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? $this->$definition |
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: $definition($this, $field); |
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} |
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} |
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Our type inference engine in quite powerful, but sometimes the code does not provide enough clues to go by. In these cases we request you to add a
@return
annotation as described here.