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<?php |
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namespace StoutLogic\AcfBuilder\Transform; |
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/** |
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* Transform applies to all leafs in array, at specific keys |
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* using array_walk_recursive |
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*/ |
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abstract class RecursiveTransform extends Transform |
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{ |
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/** |
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* Define a list of array keys `transformValue` should apply to. |
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* @var array |
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*/ |
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protected $keys = []; |
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/** |
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* @return array |
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*/ |
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public function getKeys() |
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{ |
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return $this->keys; |
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} |
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/** |
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* Apply the `transformValue` function to all values in multidementional |
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* associative array where the key matches one of the keys defined |
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* on the RecursiveTransform. |
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* @param array $config |
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* @return array transformed config |
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*/ |
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public function transform($config) |
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{ |
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foreach ($config as $key => $value ) { |
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if ($this->shouldTransformValue($key, $config)) { |
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$config = $this->transformConfig($config); |
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$config[$key] = $this->transformValue($value); |
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} else { |
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if ($this->shouldRecurse($value, $key)) { |
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$config[$key] = $this->transform($value); |
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} |
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} |
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} |
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return $config; |
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} |
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/** |
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* @param string $key |
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* @param array $config |
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* @return bool |
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*/ |
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public function shouldTransformValue($key, $config) |
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{ |
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return in_array($key, $this->getKeys(), true); |
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} |
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/** |
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* Based upon the value or key, determine if the transform function |
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* should recurse. |
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* @param $value |
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* @param string $key |
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* @return bool |
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*/ |
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protected function shouldRecurse($value, $key) |
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{ |
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return is_array($value); |
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} |
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/** |
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* Impelment this in all discrete classes |
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* @param mixed $value input |
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* @return mixed output value |
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*/ |
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abstract public function transformValue($value); |
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/** |
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* @param array $config |
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* @return array |
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*/ |
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public function transformConfig($config) |
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{ |
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return $config; |
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} |
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} |
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StoutLogic /
acf-builder
