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<?php |
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/** |
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* @author Todd Burry <[email protected]> |
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* @copyright 2009-2017 Vanilla Forums Inc. |
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* @license MIT |
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*/ |
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namespace Garden\Schema; |
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/** |
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* An class for collecting validation errors. |
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*/ |
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class Validation { |
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/** |
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* @var array |
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*/ |
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private $errors = []; |
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/** |
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* @var string |
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*/ |
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private $mainMessage = ''; |
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/** |
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* @var int |
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*/ |
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private $mainStatus = 0; |
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/** |
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* @var bool Whether or not fields should be translated. |
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*/ |
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private $translateFieldNames = false; |
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/** |
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* Add an error. |
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* |
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* @param string $field The name and path of the field to add or an empty string if this is a global error. |
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* @param string $error The message code. |
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* @param int|array $options An array of additional information to add to the error entry or a numeric error code. |
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* @return $this |
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*/ |
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public function addError($field, $error, $options = []) { |
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if (empty($error)) { |
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throw new \InvalidArgumentException('The error code cannot be empty.', 500); |
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} |
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$fieldKey = $field; |
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$row = ['field' => null, 'code' => null, 'path' => null, 'index' => null]; |
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// Split the field out into a path, field, and possible index. |
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if (($pos = strrpos($field, '.')) !== false) { |
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$row['path'] = substr($field, 0, $pos); |
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$field = substr($field, $pos + 1); |
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} |
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if (preg_match('`^([^[]+)\[(\d+)\]$`', $field, $m)) { |
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$row['index'] = (int)$m[2]; |
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$field = $m[1]; |
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} |
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$row['field'] = $field; |
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$row['code'] = $error; |
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$row = array_filter($row, function ($v) { |
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return $v !== null; |
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}); |
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if (is_array($options)) { |
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$row += $options; |
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} elseif (is_int($options)) { |
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$row['status'] = $options; |
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} |
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$this->errors[$fieldKey][] = $row; |
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return $this; |
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} |
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/** |
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* Get or set the error status code. |
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* |
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* The status code is an http response code and should be of the 4xx variety. |
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* |
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* @return int Returns the current status code. |
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*/ |
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public function getStatus() { |
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if ($status = $this->getMainStatus()) { |
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return $status; |
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} |
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if ($this->isValid()) { |
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return 200; |
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} |
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// There was no status so loop through the errors and look for the highest one. |
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$maxStatus = 0; |
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foreach ($this->getRawErrors() as $error) { |
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if (isset($error['status']) && $error['status'] > $maxStatus) { |
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$maxStatus = $error['status']; |
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} |
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} |
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return $maxStatus?: 400; |
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} |
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/** |
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* Get the message for this exception. |
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* |
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* @return string Returns the exception message. |
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*/ |
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public function getMessage() { |
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if ($message = $this->getMainMessage()) { |
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return $message; |
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} |
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$sentence = $this->translate('%s.'); |
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// Generate the message by concatenating all of the errors together. |
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$messages = []; |
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foreach ($this->getRawErrors() as $error) { |
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$message = $this->getErrorMessage($error); |
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if (preg_match('`\PP$`u', $message)) { |
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$message = sprintf($sentence, $message); |
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} |
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$messages[] = $message; |
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} |
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return implode(' ', $messages); |
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} |
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/** |
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* Gets all of the errors as a flat array. |
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* |
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* The errors are internally stored indexed by field. This method flattens them for final error returns. |
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* |
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* @return array Returns all of the errors. |
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*/ |
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public function getErrors() { |
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$result = []; |
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foreach ($this->getRawErrors() as $error) { |
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$result[] = $this->formatError($error); |
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} |
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return $result; |
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} |
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/** |
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* Get the errors for a specific field. |
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* |
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* @param string $field The full path to the field. |
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* @return array Returns an array of errors. |
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*/ |
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public function getFieldErrors($field) { |
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if (empty($this->errors[$field])) { |
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return []; |
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} else { |
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$result = []; |
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foreach ($this->errors[$field] as $error) { |
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$result[] = $this->formatError($error); |
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} |
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return $result; |
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} |
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} |
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/** |
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* Gets all of the errors as a flat array. |
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* |
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* The errors are internally stored indexed by field. This method flattens them for final error returns. |
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* |
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* @return \Traversable Returns all of the errors. |
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*/ |
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protected function getRawErrors() { |
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foreach ($this->errors as $errors) { |
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foreach ($errors as $error) { |
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yield $error; |
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} |
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} |
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} |
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/** |
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* Check whether or not the validation is free of errors. |
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* |
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* @return bool Returns true if there are no errors, false otherwise. |
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*/ |
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public function isValid() { |
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return empty($this->errors); |
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} |
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/** |
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* Check whether or not a particular field is has errors. |
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* |
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* @param string $field The name of the field to check for validity. |
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* @return bool Returns true if the field has no errors, false otherwise. |
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*/ |
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public function isValidField($field) { |
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$result = empty($this->errors[$field]); |
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return $result; |
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} |
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/** |
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* Get the error count, optionally for a particular field. |
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* |
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* @param string $field The name of a field or an empty string for all errors. |
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* @return int Returns the error count. |
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*/ |
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public function getErrorCount($field = '') { |
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if (empty($field)) { |
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return iterator_count($this->getRawErrors()); |
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} elseif (empty($this->errors[$field])) { |
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return 0; |
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} else { |
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return count($this->errors[$field]); |
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} |
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} |
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/** |
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* Get the error message for an error row. |
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* |
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* @param array $error The error row. |
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* @return string Returns a formatted/translated error message. |
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*/ |
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private function getErrorMessage(array $error) { |
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if (isset($error['messageCode'])) { |
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$messageCode = $error['messageCode']; |
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} elseif (isset($error['message'])) { |
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return $error['message']; |
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} else { |
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$messageCode = $error['code']; |
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} |
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// Massage the field name for better formatting. |
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if (!$this->getTranslateFieldNames()) { |
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$field = (!empty($error['path']) ? ($error['path'][0] !== '[' ? '' : 'item').$error['path'].'.' : '').$error['field']; |
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$field = $field ?: (isset($error['index']) ? 'item' : 'value'); |
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if (isset($error['index'])) { |
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$field .= '['.$error['index'].']'; |
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} |
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$error['field'] = '@'.$field; |
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} elseif (isset($error['index'])) { |
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if (empty($error['field'])) { |
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$error['field'] = '@'.$this->formatMessage('item {index}', $error); |
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} else { |
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$error['field'] = '@'.$this->formatMessage('{field} at position {index}', $error); |
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} |
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} elseif (empty($error['field'])) { |
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$error['field'] = 'value'; |
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} |
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$msg = $this->formatMessage($messageCode, $error); |
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return $msg; |
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} |
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/** |
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* Expand and translate a message format against an array of values. |
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* |
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* @param string $format The message format. |
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* @param array $context The context arguments to apply to the message. |
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* @return string Returns a formatted string. |
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*/ |
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private function formatMessage($format, $context = []) { |
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$format = $this->translate($format); |
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$msg = preg_replace_callback('`({[^{}]+})`', function ($m) use ($context) { |
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$args = array_filter(array_map('trim', explode(',', trim($m[1], '{}')))); |
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$field = array_shift($args); |
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return $this->formatField(isset($context[$field]) ? $context[$field] : null, $args); |
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}, $format); |
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return $msg; |
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} |
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/** |
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* Translate an argument being placed in an error message. |
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* |
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* @param mixed $value The argument to translate. |
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* @param array $args Formatting arguments. |
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* @return string Returns the translated string. |
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*/ |
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private function formatField($value, array $args = []) { |
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if ($value === null) { |
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$r = $this->translate('null'); |
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} elseif ($value === true) { |
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$r = $this->translate('true'); |
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} elseif ($value === false) { |
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$r = $this->translate('false'); |
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} elseif (is_string($value)) { |
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$r = $this->translate($value); |
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} elseif (is_numeric($value)) { |
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$r = $value; |
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} elseif (is_array($value)) { |
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$argArray = array_map([$this, 'formatField'], $value); |
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$r = implode(', ', $argArray); |
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} elseif ($value instanceof \DateTimeInterface) { |
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$r = $value->format('c'); |
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} else { |
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$r = $value; |
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} |
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294
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$format = array_shift($args); |
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switch ($format) { |
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case 'plural': |
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$singular = array_shift($args); |
298
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$plural = array_shift($args) ?: $singular.'s'; |
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299
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$count = is_array($value) ? count($value) : $value; |
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300
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$r = $count == 1 ? $singular : $plural; |
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break; |
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} |
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304
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return (string)$r; |
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} |
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307
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/** |
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* Translate a string. |
309
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* |
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* This method doesn't do any translation itself, but is meant for subclasses wanting to add translation ability to |
311
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* this class. |
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* |
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* @param string $str The string to translate. |
314
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* @return string Returns the translated string. |
315
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*/ |
316
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61 |
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public function translate($str) { |
317
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if (substr($str, 0, 1) === '@') { |
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// This is a literal string that bypasses translation. |
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return substr($str, 1); |
320
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} else { |
321
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return $str; |
322
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} |
323
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} |
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/** |
326
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* Merge another validation object with this one. |
327
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* |
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* @param Validation $validation The validation object to merge. |
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* @param string $name The path to merge to. Use this parameter when the validation object is meant to be a subset of this one. |
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* @return $this |
331
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*/ |
332
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2 |
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public function merge(Validation $validation, $name = '') { |
333
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2 |
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$paths = $validation->errors; |
334
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335
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2 |
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foreach ($paths as $path => $errors) { |
336
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2 |
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foreach ($errors as $error) { |
337
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2 |
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if (!empty($name)) { |
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// We are merging a sub-schema error that did not occur on a particular property of the sub-schema. |
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2 |
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if ($path === '') { |
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1 |
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$fullPath = "$name"; |
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1 |
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} else { |
342
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1 |
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$fullPath = "{$name}.{$path}"; |
343
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} |
344
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2 |
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$this->addError($fullPath, $error['code'], $error); |
345
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2 |
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} |
346
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2 |
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} |
347
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2 |
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} |
348
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2 |
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return $this; |
349
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} |
350
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|
351
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/** |
352
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* Get the main error message. |
353
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* |
354
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* If set, this message will be returned as the error message. Otherwise the message will be set from individual |
355
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* errors. |
356
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* |
357
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* @return string Returns the main message. |
358
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*/ |
359
|
59 |
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public function getMainMessage() { |
360
|
59 |
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return $this->mainMessage; |
361
|
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} |
362
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|
363
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/** |
364
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* Set the main error message. |
365
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* |
366
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* @param string $message The new message. |
367
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* @return $this |
368
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*/ |
369
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1 |
|
public function setMainMessage($message) { |
370
|
1 |
|
$this->mainMessage = $message; |
371
|
1 |
|
return $this; |
372
|
|
|
} |
373
|
|
|
|
374
|
|
|
/** |
375
|
|
|
* Get the main status. |
376
|
|
|
* |
377
|
|
|
* @return int Returns an HTTP response code or zero to indicate it should be calculated. |
378
|
|
|
*/ |
379
|
58 |
|
public function getMainStatus() { |
380
|
58 |
|
return $this->mainStatus; |
381
|
|
|
} |
382
|
|
|
|
383
|
|
|
/** |
384
|
|
|
* Set the main status. |
385
|
|
|
* |
386
|
|
|
* @param int $status An HTTP response code or zero. |
387
|
|
|
* @return $this |
388
|
|
|
*/ |
389
|
1 |
|
public function setMainStatus($status) { |
390
|
1 |
|
$this->mainStatus = $status; |
391
|
1 |
|
return $this; |
392
|
|
|
} |
393
|
|
|
|
394
|
|
|
/** |
395
|
|
|
* Whether or not fields should be translated. |
396
|
|
|
* |
397
|
|
|
* @return bool Returns **true** if field names are translated or **false** otherwise. |
398
|
|
|
*/ |
399
|
60 |
|
public function getTranslateFieldNames() { |
400
|
60 |
|
return $this->translateFieldNames; |
401
|
|
|
} |
402
|
|
|
|
403
|
|
|
/** |
404
|
|
|
* Set whether or not fields should be translated. |
405
|
|
|
* |
406
|
|
|
* @param bool $translate Whether or not fields should be translated. |
407
|
|
|
* @return $this |
408
|
|
|
*/ |
409
|
2 |
|
public function setTranslateFieldNames($translate) { |
410
|
2 |
|
$this->translateFieldNames = $translate; |
411
|
2 |
|
return $this; |
412
|
|
|
} |
413
|
|
|
|
414
|
|
|
/** |
415
|
|
|
* @param $error |
416
|
|
|
* @return array |
417
|
|
|
*/ |
418
|
10 |
|
private function formatError($error) { |
419
|
10 |
|
$row = array_intersect_key( |
420
|
10 |
|
$error, |
421
|
10 |
|
['field' => 1, 'path' => 1, 'index' => 1, 'code' => 1] |
422
|
10 |
|
); |
423
|
|
|
|
424
|
10 |
|
$row['message'] = $this->getErrorMessage($error); |
425
|
10 |
|
return $row; |
426
|
|
|
} |
427
|
|
|
} |
428
|
|
|
|
This check looks for multiple assignments in successive lines of code. It will report an issue if the operators are not in a straight line.
To visualize
will produce issues in the first and second line, while this second example
will produce no issues.