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<?php |
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/** |
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* @author Jared King <[email protected]> |
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* |
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* @see http://jaredtking.com |
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* |
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* @copyright 2015 Jared King |
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* @license MIT |
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*/ |
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namespace Pulsar; |
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use ArrayAccess; |
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use ArrayIterator; |
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use Countable; |
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use IteratorAggregate; |
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use Pulsar\Interfaces\TranslatorInterface; |
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/** |
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* Holds error messages generated by models, like validation errors. |
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*/ |
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final class Errors implements IteratorAggregate, Countable, ArrayAccess |
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{ |
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/** |
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* @var TranslatorInterface|null |
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*/ |
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private static $translator; |
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/** |
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* @var Error[] |
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*/ |
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private $stack = []; |
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/** |
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* Sets the global translator instance. |
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*/ |
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public static function setTranslator(TranslatorInterface $translator) |
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{ |
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self::$translator = $translator; |
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} |
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/** |
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* Clears the global translator instance. |
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*/ |
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public static function clearTranslator(): void |
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{ |
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self::$translator = null; |
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} |
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/** |
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* Gets the translator. |
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*/ |
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public function getTranslator(): TranslatorInterface |
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{ |
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if (!self::$translator) { |
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self::$translator = new Translator(); |
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} |
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return self::$translator; |
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} |
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/** |
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* Adds an error message to the stack. |
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* |
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* @param $error |
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* |
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* @return $this |
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*/ |
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public function add(string $error, array $context = []) |
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{ |
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$message = $this->parse($error, $context); |
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$this->stack[] = new Error($error, $context, $message); |
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return $this; |
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} |
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/** |
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* Gets all of the error messages on the stack. |
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* |
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* @return string[] |
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*/ |
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public function all(): array |
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{ |
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$messages = []; |
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foreach ($this->stack as $error) { |
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$messages[] = $error->getMessage(); |
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} |
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return $messages; |
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} |
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/** |
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* Gets an error for a specific parameter on the stack. |
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* |
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* @param string $value value we are searching for |
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* @param string $param parameter name |
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*/ |
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public function find($value, $param = 'field'): ?Error |
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{ |
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foreach ($this->stack as $error) { |
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$stackValue = $error->getContext()[$param] ?? null; |
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if ($stackValue === $value) { |
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return $error; |
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} |
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} |
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return null; |
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} |
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/** |
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* Checks if an error exists with a specific parameter on the stack. |
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* |
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* @param string $value value we are searching for |
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* @param string $param parameter name |
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*/ |
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public function has($value, $param = 'field'): bool |
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{ |
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foreach ($this->stack as $error) { |
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$stackValue = $error->getContext()[$param] ?? null; |
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if ($stackValue !== $value) { |
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continue; |
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} |
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return true; |
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} |
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return false; |
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} |
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/** |
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* Clears the error stack. |
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* |
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* @return $this |
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*/ |
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public function clear() |
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{ |
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$this->stack = []; |
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return $this; |
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} |
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public function __toString() |
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{ |
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return implode("\n", $this->all()); |
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} |
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////////////////////////// |
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// Helpers |
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////////////////////////// |
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/** |
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* Formats an incoming error message. |
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* |
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* @param array|string $input |
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*/ |
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private function sanitize($input): Error |
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{ |
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$error = is_array($input) ? $input['error'] : $input; |
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$context = $input['context'] ?? []; |
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$message = $this->parse($error, $context); |
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return new Error($error, $context, $message); |
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} |
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/** |
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* Parses an error message before displaying it. |
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*/ |
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private function parse(string $error, array $context): string |
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{ |
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return $this->getTranslator()->translate($error, $context, null); |
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} |
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////////////////////////// |
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// IteratorAggregate Interface |
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////////////////////////// |
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public function getIterator() |
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{ |
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return new ArrayIterator($this->stack); |
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} |
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////////////////////////// |
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// Countable Interface |
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////////////////////////// |
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/** |
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* Get total number of models matching query. |
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* |
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* @return int |
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*/ |
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public function count() |
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{ |
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return count($this->stack); |
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} |
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///////////////////////////// |
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// ArrayAccess Interface |
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///////////////////////////// |
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public function offsetExists($offset) |
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{ |
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return isset($this->stack[$offset]); |
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} |
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public function offsetGet($offset) |
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{ |
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if (!$this->offsetExists($offset)) { |
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throw new \OutOfBoundsException("$offset does not exist on this error stack"); |
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} |
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return $this->stack[$offset]; |
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} |
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public function offsetSet($offset, $error) |
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{ |
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if (!is_numeric($offset)) { |
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throw new \Exception('Can only perform set on numeric indices'); |
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} |
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$this->stack[$offset] = $this->sanitize($error); |
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} |
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public function offsetUnset($offset) |
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{ |
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unset($this->stack[$offset]); |
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} |
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} |
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