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<?php |
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declare(strict_types=1); |
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namespace Jasny\Session\Flash; |
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/** |
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* Flash messages are stored in the session and cleared after they're used. |
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*/ |
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class FlashBag implements \IteratorAggregate |
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{ |
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protected \ArrayAccess $session; |
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protected string $key; |
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protected array $entries = []; |
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/** |
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* Class constructor. |
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*/ |
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public function __construct(string $key = 'flash') |
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{ |
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$this->key = $key; |
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} |
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/** |
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* Get iterator for entries. |
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*/ |
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public function getIterator(): \Traversable |
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{ |
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return new \ArrayIterator($this->entries); |
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} |
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/** |
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* Get all entries as array. |
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*/ |
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public function getArrayCopy(): array |
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{ |
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return $this->entries; |
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} |
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/** |
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* Get copy with session object. |
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* |
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* @return static |
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*/ |
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public function withSession(\ArrayAccess $session): self |
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{ |
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if (isset($this->session) && $this->session === $session) { |
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return $this; |
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} |
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$copy = clone $this; |
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$copy->session = $session; |
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$copy->initFromSession(); |
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return $copy; |
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} |
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/** |
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* Initialize the entries from the session. |
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*/ |
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protected function initFromSession(): void |
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{ |
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if (!isset($this->session[$this->key])) { |
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return; |
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} |
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$entries = $this->session[$this->key]; |
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unset($this->session[$this->key]); |
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if (!is_array($entries)) { |
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trigger_error('Invalid flash session data', E_USER_WARNING); |
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return; |
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} |
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$this->initEntries($entries); |
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} |
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/** |
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* Initialize the entries. |
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* |
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* @param array $entries |
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*/ |
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protected function initEntries(array $entries): void |
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{ |
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$invalid = 0; |
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foreach ($entries as $entry) { |
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if (!is_array($entry) || !isset($entry['message'])) { |
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$invalid++; |
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continue; |
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} |
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$this->entries[] = $entry + ['type' => '', 'contentType' => 'text/plain']; |
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} |
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if ($invalid > 0) { |
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trigger_error( |
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$invalid === 1 ? "Ignored invalid flash message" : "Ignoring $invalid invalid flash messages", |
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E_USER_NOTICE, |
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); |
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} |
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} |
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/** |
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* Add a flash message. |
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* |
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* @param string $type flash type, eg. 'error', 'notice' or 'success' |
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* @param string $message flash message |
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* @param string $contentType mime, eg 'text/plain' or 'text/html' |
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* @return $this |
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*/ |
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public function add(string $type, string $message, string $contentType = 'text/plain'): self |
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{ |
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$this->session[$this->key][] = ['type' => $type, 'message' => $message, 'contentType' => $contentType]; |
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return $this; |
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} |
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/** |
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* Reissue the flash messages. |
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* Get it now and it will remain in the session for next request. |
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*/ |
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public function reissue(): self |
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{ |
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$this->session[$this->key] = array_merge( |
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$this->entries, |
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$this->session[$this->key] ?? [], |
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); |
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$this->entries = []; |
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return $this; |
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} |
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/** |
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* Clear all flash messages. |
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*/ |
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public function clear(): self |
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{ |
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$this->entries = []; |
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if (isset($this->session[$this->key])) { |
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unset($this->session[$this->key]); |
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} |
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return $this; |
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} |
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} |
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jasny /
session-middleware
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