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<?php |
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namespace drycart\data; |
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/* |
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* @copyright (c) 2019 Mendel <[email protected]> |
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* @license see license.txt |
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*/ |
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/** |
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* Trait for pretty use for list of constants and/or data arrays |
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* |
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* @author mendel |
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*/ |
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trait EnumTrait |
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{ |
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/** |
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* Array for titles. Just default dummy for override if need |
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* |
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* @return array |
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*/ |
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static protected function titles() : array |
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{ |
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return []; |
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} |
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/** |
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* Main function. Return list of constants i.e. keys and values... |
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* |
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* @return array |
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*/ |
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static public function data() : array |
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{ |
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// @2DO: add assertion for check if values is uniqal |
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$reflector = new \ReflectionClass(static::class); |
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return $reflector->getConstants(); |
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} |
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/** |
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* Get iterator for titles/keys/values |
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* |
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* @return \Iterator |
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*/ |
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static public function titlesIterator() : \Iterator |
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{ |
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$titles = static::titles(); |
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foreach(static::data() as $key=>$value) { |
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yield new DataWrapper([ |
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'key' => $key, |
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'value' => $value, |
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'title' => $titles[$key] ?? StrHelper::key2Label(strtolower($key)) |
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]); |
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} |
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} |
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/** |
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* Return all keys and his titles (defined at titles() or default generated) |
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* |
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* @return array |
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*/ |
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static public function keyTitles() : array |
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{ |
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$titles = static::titles(); |
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$result = []; |
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foreach(array_keys(static::data()) as $key) { |
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$result[$key] = $titles[$key] ?? StrHelper::key2Label(strtolower($key)); |
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} |
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return $result; |
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} |
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/** |
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* Return all values and his titles (defined at titles() or default generated) |
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* |
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* @return array |
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*/ |
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static public function valueTitles() : array |
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{ |
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$titles = static::titles(); |
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$result = []; |
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foreach(static::data() as $key=>$value) { |
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$result[$value] = $titles[$key] ?? StrHelper::key2Label(strtolower($key)); |
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} |
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return $result; |
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} |
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/** |
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* Get value by key |
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* @param string $key |
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* @return mixed |
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*/ |
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static public function value(string $key) |
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{ |
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return static::data()[$key] ?? null; |
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} |
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/** |
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* Get key by value |
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* @param mixed $value |
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* @return string|null |
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*/ |
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static public function key($value) : ?string |
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{ |
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$data = array_flip(static::data()); |
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return $data[$value] ?? null; |
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} |
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static public function checkKey(string $key) : void |
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{ |
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if(in_null(static::value($key))) { |
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throw \Exception(); |
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} |
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} |
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} |
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drycart /
data
