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storageKey = $storageKey; } // Set storage if (is_array($storage) || $storage instanceof ArrayAccess) { $this->storage = &$storage; } elseif (is_null($storage)) { if (!isset($_SESSION)) { throw new RuntimeException('Flash messages middleware failed. Session not found.'); } $this->storage = &$_SESSION; } else { throw new InvalidArgumentException('Flash messages storage must be an array or implement \ArrayAccess'); } // Load messages from previous request if (isset($this->storage[$this->storageKey]) && is_array($this->storage[$this->storageKey])) { $this->fromPrevious = $this->storage[$this->storageKey]; } $this->storage[$this->storageKey] = []; } /** * Add flash message for the next request * * @param string $key The key to store the message under * @param mixed $message Message to show on next request */ public function addMessage($key, $message) { // Create Array for this key if (!isset($this->storage[$this->storageKey][$key])) { $this->storage[$this->storageKey][$key] = []; } // Push onto the array $this->storage[$this->storageKey][$key][] = $message; } /** * Add flash message for current request * * @param string $key The key to store the message under * @param mixed $message Message to show on next request */ public function addMessageNow($key, $message) { // Create Array for this key if (!isset($this->forNow[$key])) { $this->forNow[$key] = []; } // Push onto the array $this->forNow[$key][] = $message; } /** * Get flash messages * * @return array Messages to show for current request */ public function getMessages() { $messages = $this->fromPrevious; foreach ($this->forNow as $key => $values) { if (!isset($messages[$key])) { $messages[$key] = []; } foreach ($values as $value) { array_push($messages[$key], $value); } } return $messages; } /** * Get Flash Message * * @param string $key The key to get the message from * @return mixed|null Returns the message */ public function getMessage($key) { $messages = $this->getMessages(); // If the key exists then return all messages or null return (isset($messages[$key])) ? $messages[$key] : null; } /** * Get the first Flash message * * @param string $key The key to get the message from * @param string $default Default value if key doesn't exist * @return mixed Returns the message */ public function getFirstMessage($key, $default = null) { $messages = self::getMessage($key); if (is_array($messages) && count($messages) > 0) { return $messages[0]; } return $default; } /** * Has Flash Message * * @param string $key The key to get the message from * @return bool Whether the message is set or not */ public function hasMessage($key) { $messages = $this->getMessages(); return isset($messages[$key]); } /** * Clear all messages * * @return void */ public function clearMessages() { if (isset($this->storage[$this->storageKey])) { $this->storage[$this->storageKey] = []; } $this->fromPrevious = []; $this->forNow = []; } /** * Clear specific message * * @param String $key The key to clear * @return void */ public function clearMessage($key) { if (isset($this->storage[$this->storageKey][$key])) { unset($this->storage[$this->storageKey][$key]); } if (isset($this->fromPrevious[$key])) { unset($this->fromPrevious[$key]); } if (isset($this->forNow[$key])) { unset($this->forNow[$key]); } } }