rob006 /
yii2-dev
Complex classes like Session often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Session, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
||
| 73 | class Session extends Component implements \IteratorAggregate, \ArrayAccess, \Countable |
||
| 74 | { |
||
| 75 | /** |
||
| 76 | * @var string the name of the session variable that stores the flash message data. |
||
| 77 | */ |
||
| 78 | public $flashParam = '__flash'; |
||
| 79 | /** |
||
| 80 | * @var \SessionHandlerInterface|array an object implementing the SessionHandlerInterface or a configuration array. If set, will be used to provide persistency instead of build-in methods. |
||
| 81 | */ |
||
| 82 | public $handler; |
||
| 83 | |||
| 84 | /** |
||
| 85 | * @var array parameter-value pairs to override default session cookie parameters that are used for session_set_cookie_params() function |
||
| 86 | * Array may have the following possible keys: 'lifetime', 'path', 'domain', 'secure', 'httponly' |
||
| 87 | * @see http://www.php.net/manual/en/function.session-set-cookie-params.php |
||
| 88 | */ |
||
| 89 | private $_cookieParams = ['httponly' => true]; |
||
| 90 | |||
| 91 | |||
| 92 | /** |
||
| 93 | * Initializes the application component. |
||
| 94 | * This method is required by IApplicationComponent and is invoked by application. |
||
| 95 | */ |
||
| 96 | 32 | public function init() |
|
| 105 | |||
| 106 | /** |
||
| 107 | * Returns a value indicating whether to use custom session storage. |
||
| 108 | * This method should be overridden to return true by child classes that implement custom session storage. |
||
| 109 | * To implement custom session storage, override these methods: [[openSession()]], [[closeSession()]], |
||
| 110 | * [[readSession()]], [[writeSession()]], [[destroySession()]] and [[gcSession()]]. |
||
| 111 | * @return boolean whether to use custom storage. |
||
| 112 | */ |
||
| 113 | 19 | public function getUseCustomStorage() |
|
| 117 | |||
| 118 | /** |
||
| 119 | * Starts the session. |
||
| 120 | */ |
||
| 121 | 19 | public function open() |
|
| 142 | |||
| 143 | /** |
||
| 144 | * Registers session handler. |
||
| 145 | * @throws \yii\base\InvalidConfigException |
||
| 146 | */ |
||
| 147 | 19 | protected function registerSessionHandler() |
|
| 179 | |||
| 180 | /** |
||
| 181 | * Ends the current session and store session data. |
||
| 182 | */ |
||
| 183 | 27 | public function close() |
|
| 189 | |||
| 190 | /** |
||
| 191 | * Frees all session variables and destroys all data registered to a session. |
||
| 192 | */ |
||
| 193 | 1 | public function destroy() |
|
| 205 | |||
| 206 | /** |
||
| 207 | * @return boolean whether the session has started |
||
| 208 | */ |
||
| 209 | 32 | public function getIsActive() |
|
| 213 | |||
| 214 | private $_hasSessionId; |
||
| 215 | |||
| 216 | /** |
||
| 217 | * Returns a value indicating whether the current request has sent the session ID. |
||
| 218 | * The default implementation will check cookie and $_GET using the session name. |
||
| 219 | * If you send session ID via other ways, you may need to override this method |
||
| 220 | * or call [[setHasSessionId()]] to explicitly set whether the session ID is sent. |
||
| 221 | * @return boolean whether the current request has sent the session ID. |
||
| 222 | */ |
||
| 223 | 9 | public function getHasSessionId() |
|
| 239 | |||
| 240 | /** |
||
| 241 | * Sets the value indicating whether the current request has sent the session ID. |
||
| 242 | * This method is provided so that you can override the default way of determining |
||
| 243 | * whether the session ID is sent. |
||
| 244 | * @param boolean $value whether the current request has sent the session ID. |
||
| 245 | */ |
||
| 246 | public function setHasSessionId($value) |
||
| 250 | |||
| 251 | /** |
||
| 252 | * Gets the session ID. |
||
| 253 | * This is a wrapper for [PHP session_id()](http://php.net/manual/en/function.session-id.php). |
||
| 254 | * @return string the current session ID |
||
| 255 | */ |
||
| 256 | public function getId() |
||
| 260 | |||
| 261 | /** |
||
| 262 | * Sets the session ID. |
||
| 263 | * This is a wrapper for [PHP session_id()](http://php.net/manual/en/function.session-id.php). |
||
| 264 | * @param string $value the session ID for the current session |
||
| 265 | */ |
||
| 266 | 1 | public function setId($value) |
|
| 270 | |||
| 271 | /** |
||
| 272 | * Updates the current session ID with a newly generated one . |
||
| 273 | * Please refer to <http://php.net/session_regenerate_id> for more details. |
||
| 274 | * @param boolean $deleteOldSession Whether to delete the old associated session file or not. |
||
| 275 | */ |
||
| 276 | 13 | public function regenerateID($deleteOldSession = false) |
|
| 288 | |||
| 289 | /** |
||
| 290 | * Gets the name of the current session. |
||
| 291 | * This is a wrapper for [PHP session_name()](http://php.net/manual/en/function.session-name.php). |
||
| 292 | * @return string the current session name |
||
| 293 | */ |
||
| 294 | 9 | public function getName() |
|
| 298 | |||
| 299 | /** |
||
| 300 | * Sets the name for the current session. |
||
| 301 | * This is a wrapper for [PHP session_name()](http://php.net/manual/en/function.session-name.php). |
||
| 302 | * @param string $value the session name for the current session, must be an alphanumeric string. |
||
| 303 | * It defaults to "PHPSESSID". |
||
| 304 | */ |
||
| 305 | public function setName($value) |
||
| 309 | |||
| 310 | /** |
||
| 311 | * Gets the current session save path. |
||
| 312 | * This is a wrapper for [PHP session_save_path()](http://php.net/manual/en/function.session-save-path.php). |
||
| 313 | * @return string the current session save path, defaults to '/tmp'. |
||
| 314 | */ |
||
| 315 | public function getSavePath() |
||
| 319 | |||
| 320 | /** |
||
| 321 | * Sets the current session save path. |
||
| 322 | * This is a wrapper for [PHP session_save_path()](http://php.net/manual/en/function.session-save-path.php). |
||
| 323 | * @param string $value the current session save path. This can be either a directory name or a path alias. |
||
| 324 | * @throws InvalidParamException if the path is not a valid directory |
||
| 325 | */ |
||
| 326 | public function setSavePath($value) |
||
| 335 | |||
| 336 | /** |
||
| 337 | * @return array the session cookie parameters. |
||
| 338 | * @see http://php.net/manual/en/function.session-get-cookie-params.php |
||
| 339 | */ |
||
| 340 | 19 | public function getCookieParams() |
|
| 344 | |||
| 345 | /** |
||
| 346 | * Sets the session cookie parameters. |
||
| 347 | * The cookie parameters passed to this method will be merged with the result |
||
| 348 | * of `session_get_cookie_params()`. |
||
| 349 | * @param array $value cookie parameters, valid keys include: `lifetime`, `path`, `domain`, `secure` and `httponly`. |
||
| 350 | * @throws InvalidParamException if the parameters are incomplete. |
||
| 351 | * @see http://us2.php.net/manual/en/function.session-set-cookie-params.php |
||
| 352 | */ |
||
| 353 | public function setCookieParams(array $value) |
||
| 357 | |||
| 358 | /** |
||
| 359 | * Sets the session cookie parameters. |
||
| 360 | * This method is called by [[open()]] when it is about to open the session. |
||
| 361 | * @throws InvalidParamException if the parameters are incomplete. |
||
| 362 | * @see http://us2.php.net/manual/en/function.session-set-cookie-params.php |
||
| 363 | */ |
||
| 364 | 19 | private function setCookieParamsInternal() |
|
| 373 | |||
| 374 | /** |
||
| 375 | * Returns the value indicating whether cookies should be used to store session IDs. |
||
| 376 | * @return boolean|null the value indicating whether cookies should be used to store session IDs. |
||
| 377 | * @see setUseCookies() |
||
| 378 | */ |
||
| 379 | public function getUseCookies() |
||
| 389 | |||
| 390 | /** |
||
| 391 | * Sets the value indicating whether cookies should be used to store session IDs. |
||
| 392 | * Three states are possible: |
||
| 393 | * |
||
| 394 | * - true: cookies and only cookies will be used to store session IDs. |
||
| 395 | * - false: cookies will not be used to store session IDs. |
||
| 396 | * - null: if possible, cookies will be used to store session IDs; if not, other mechanisms will be used (e.g. GET parameter) |
||
| 397 | * |
||
| 398 | * @param boolean|null $value the value indicating whether cookies should be used to store session IDs. |
||
| 399 | */ |
||
| 400 | public function setUseCookies($value) |
||
| 413 | |||
| 414 | /** |
||
| 415 | * @return float the probability (percentage) that the GC (garbage collection) process is started on every session initialization, defaults to 1 meaning 1% chance. |
||
| 416 | */ |
||
| 417 | public function getGCProbability() |
||
| 421 | |||
| 422 | /** |
||
| 423 | * @param float $value the probability (percentage) that the GC (garbage collection) process is started on every session initialization. |
||
| 424 | * @throws InvalidParamException if the value is not between 0 and 100. |
||
| 425 | */ |
||
| 426 | public function setGCProbability($value) |
||
| 436 | |||
| 437 | /** |
||
| 438 | * @return boolean whether transparent sid support is enabled or not, defaults to false. |
||
| 439 | */ |
||
| 440 | public function getUseTransparentSessionID() |
||
| 444 | |||
| 445 | /** |
||
| 446 | * @param boolean $value whether transparent sid support is enabled or not. |
||
| 447 | */ |
||
| 448 | public function setUseTransparentSessionID($value) |
||
| 452 | |||
| 453 | /** |
||
| 454 | * @return integer the number of seconds after which data will be seen as 'garbage' and cleaned up. |
||
| 455 | * The default value is 1440 seconds (or the value of "session.gc_maxlifetime" set in php.ini). |
||
| 456 | */ |
||
| 457 | 4 | public function getTimeout() |
|
| 461 | |||
| 462 | /** |
||
| 463 | * @param integer $value the number of seconds after which data will be seen as 'garbage' and cleaned up |
||
| 464 | */ |
||
| 465 | public function setTimeout($value) |
||
| 469 | |||
| 470 | /** |
||
| 471 | * Session open handler. |
||
| 472 | * This method should be overridden if [[useCustomStorage]] returns true. |
||
| 473 | * Do not call this method directly. |
||
| 474 | * @param string $savePath session save path |
||
| 475 | * @param string $sessionName session name |
||
| 476 | * @return boolean whether session is opened successfully |
||
| 477 | */ |
||
| 478 | public function openSession($savePath, $sessionName) |
||
| 482 | |||
| 483 | /** |
||
| 484 | * Session close handler. |
||
| 485 | * This method should be overridden if [[useCustomStorage]] returns true. |
||
| 486 | * Do not call this method directly. |
||
| 487 | * @return boolean whether session is closed successfully |
||
| 488 | */ |
||
| 489 | public function closeSession() |
||
| 493 | |||
| 494 | /** |
||
| 495 | * Session read handler. |
||
| 496 | * This method should be overridden if [[useCustomStorage]] returns true. |
||
| 497 | * Do not call this method directly. |
||
| 498 | * @param string $id session ID |
||
| 499 | * @return string the session data |
||
| 500 | */ |
||
| 501 | public function readSession($id) |
||
| 505 | |||
| 506 | /** |
||
| 507 | * Session write handler. |
||
| 508 | * This method should be overridden if [[useCustomStorage]] returns true. |
||
| 509 | * Do not call this method directly. |
||
| 510 | * @param string $id session ID |
||
| 511 | * @param string $data session data |
||
| 512 | * @return boolean whether session write is successful |
||
| 513 | */ |
||
| 514 | public function writeSession($id, $data) |
||
| 518 | |||
| 519 | /** |
||
| 520 | * Session destroy handler. |
||
| 521 | * This method should be overridden if [[useCustomStorage]] returns true. |
||
| 522 | * Do not call this method directly. |
||
| 523 | * @param string $id session ID |
||
| 524 | * @return boolean whether session is destroyed successfully |
||
| 525 | */ |
||
| 526 | public function destroySession($id) |
||
| 530 | |||
| 531 | /** |
||
| 532 | * Session GC (garbage collection) handler. |
||
| 533 | * This method should be overridden if [[useCustomStorage]] returns true. |
||
| 534 | * Do not call this method directly. |
||
| 535 | * @param integer $maxLifetime the number of seconds after which data will be seen as 'garbage' and cleaned up. |
||
| 536 | * @return boolean whether session is GCed successfully |
||
| 537 | */ |
||
| 538 | public function gcSession($maxLifetime) |
||
| 542 | |||
| 543 | /** |
||
| 544 | * Returns an iterator for traversing the session variables. |
||
| 545 | * This method is required by the interface [[\IteratorAggregate]]. |
||
| 546 | * @return SessionIterator an iterator for traversing the session variables. |
||
| 547 | */ |
||
| 548 | public function getIterator() |
||
| 553 | |||
| 554 | /** |
||
| 555 | * Returns the number of items in the session. |
||
| 556 | * @return integer the number of session variables |
||
| 557 | */ |
||
| 558 | public function getCount() |
||
| 563 | |||
| 564 | /** |
||
| 565 | * Returns the number of items in the session. |
||
| 566 | * This method is required by [[\Countable]] interface. |
||
| 567 | * @return integer number of items in the session. |
||
| 568 | */ |
||
| 569 | public function count() |
||
| 573 | |||
| 574 | /** |
||
| 575 | * Returns the session variable value with the session variable name. |
||
| 576 | * If the session variable does not exist, the `$defaultValue` will be returned. |
||
| 577 | * @param string $key the session variable name |
||
| 578 | * @param mixed $defaultValue the default value to be returned when the session variable does not exist. |
||
| 579 | * @return mixed the session variable value, or $defaultValue if the session variable does not exist. |
||
| 580 | */ |
||
| 581 | 19 | public function get($key, $defaultValue = null) |
|
| 586 | |||
| 587 | /** |
||
| 588 | * Adds a session variable. |
||
| 589 | * If the specified name already exists, the old value will be overwritten. |
||
| 590 | * @param string $key session variable name |
||
| 591 | * @param mixed $value session variable value |
||
| 592 | */ |
||
| 593 | 16 | public function set($key, $value) |
|
| 598 | |||
| 599 | /** |
||
| 600 | * Removes a session variable. |
||
| 601 | * @param string $key the name of the session variable to be removed |
||
| 602 | * @return mixed the removed value, null if no such session variable. |
||
| 603 | */ |
||
| 604 | 13 | public function remove($key) |
|
| 616 | |||
| 617 | /** |
||
| 618 | * Removes all session variables |
||
| 619 | */ |
||
| 620 | 3 | public function removeAll() |
|
| 627 | |||
| 628 | /** |
||
| 629 | * @param mixed $key session variable name |
||
| 630 | * @return boolean whether there is the named session variable |
||
| 631 | */ |
||
| 632 | public function has($key) |
||
| 637 | |||
| 638 | /** |
||
| 639 | * Updates the counters for flash messages and removes outdated flash messages. |
||
| 640 | * This method should only be called once in [[init()]]. |
||
| 641 | */ |
||
| 642 | 19 | protected function updateFlashCounters() |
|
| 659 | |||
| 660 | /** |
||
| 661 | * Returns a flash message. |
||
| 662 | * @param string $key the key identifying the flash message |
||
| 663 | * @param mixed $defaultValue value to be returned if the flash message does not exist. |
||
| 664 | * @param boolean $delete whether to delete this flash message right after this method is called. |
||
| 665 | * If false, the flash message will be automatically deleted in the next request. |
||
| 666 | * @return mixed the flash message or an array of messages if addFlash was used |
||
| 667 | * @see setFlash() |
||
| 668 | * @see addFlash() |
||
| 669 | * @see hasFlash() |
||
| 670 | * @see getAllFlashes() |
||
| 671 | * @see removeFlash() |
||
| 672 | */ |
||
| 673 | public function getFlash($key, $defaultValue = null, $delete = false) |
||
| 691 | |||
| 692 | /** |
||
| 693 | * Returns all flash messages. |
||
| 694 | * |
||
| 695 | * You may use this method to display all the flash messages in a view file: |
||
| 696 | * |
||
| 697 | * ```php |
||
| 698 | * <?php |
||
| 699 | * foreach (Yii::$app->session->getAllFlashes() as $key => $message) { |
||
| 700 | * echo '<div class="alert alert-' . $key . '">' . $message . '</div>'; |
||
| 701 | * } ?> |
||
| 702 | * ``` |
||
| 703 | * |
||
| 704 | * With the above code you can use the [bootstrap alert][] classes such as `success`, `info`, `danger` |
||
| 705 | * as the flash message key to influence the color of the div. |
||
| 706 | * |
||
| 707 | * Note that if you use [[addFlash()]], `$message` will be an array, and you will have to adjust the above code. |
||
| 708 | * |
||
| 709 | * [bootstrap alert]: http://getbootstrap.com/components/#alerts |
||
| 710 | * |
||
| 711 | * @param boolean $delete whether to delete the flash messages right after this method is called. |
||
| 712 | * If false, the flash messages will be automatically deleted in the next request. |
||
| 713 | * @return array flash messages (key => message or key => [message1, message2]). |
||
| 714 | * @see setFlash() |
||
| 715 | * @see addFlash() |
||
| 716 | * @see getFlash() |
||
| 717 | * @see hasFlash() |
||
| 718 | * @see removeFlash() |
||
| 719 | */ |
||
| 720 | public function getAllFlashes($delete = false) |
||
| 742 | |||
| 743 | /** |
||
| 744 | * Sets a flash message. |
||
| 745 | * A flash message will be automatically deleted after it is accessed in a request and the deletion will happen |
||
| 746 | * in the next request. |
||
| 747 | * If there is already an existing flash message with the same key, it will be overwritten by the new one. |
||
| 748 | * @param string $key the key identifying the flash message. Note that flash messages |
||
| 749 | * and normal session variables share the same name space. If you have a normal |
||
| 750 | * session variable using the same name, its value will be overwritten by this method. |
||
| 751 | * @param mixed $value flash message |
||
| 752 | * @param boolean $removeAfterAccess whether the flash message should be automatically removed only if |
||
| 753 | * it is accessed. If false, the flash message will be automatically removed after the next request, |
||
| 754 | * regardless if it is accessed or not. If true (default value), the flash message will remain until after |
||
| 755 | * it is accessed. |
||
| 756 | * @see getFlash() |
||
| 757 | * @see addFlash() |
||
| 758 | * @see removeFlash() |
||
| 759 | */ |
||
| 760 | public function setFlash($key, $value = true, $removeAfterAccess = true) |
||
| 767 | |||
| 768 | /** |
||
| 769 | * Adds a flash message. |
||
| 770 | * If there are existing flash messages with the same key, the new one will be appended to the existing message array. |
||
| 771 | * @param string $key the key identifying the flash message. |
||
| 772 | * @param mixed $value flash message |
||
| 773 | * @param boolean $removeAfterAccess whether the flash message should be automatically removed only if |
||
| 774 | * it is accessed. If false, the flash message will be automatically removed after the next request, |
||
| 775 | * regardless if it is accessed or not. If true (default value), the flash message will remain until after |
||
| 776 | * it is accessed. |
||
| 777 | * @see getFlash() |
||
| 778 | * @see setFlash() |
||
| 779 | * @see removeFlash() |
||
| 780 | */ |
||
| 781 | public function addFlash($key, $value = true, $removeAfterAccess = true) |
||
| 796 | |||
| 797 | /** |
||
| 798 | * Removes a flash message. |
||
| 799 | * @param string $key the key identifying the flash message. Note that flash messages |
||
| 800 | * and normal session variables share the same name space. If you have a normal |
||
| 801 | * session variable using the same name, it will be removed by this method. |
||
| 802 | * @return mixed the removed flash message. Null if the flash message does not exist. |
||
| 803 | * @see getFlash() |
||
| 804 | * @see setFlash() |
||
| 805 | * @see addFlash() |
||
| 806 | * @see removeAllFlashes() |
||
| 807 | */ |
||
| 808 | public function removeFlash($key) |
||
| 817 | |||
| 818 | /** |
||
| 819 | * Removes all flash messages. |
||
| 820 | * Note that flash messages and normal session variables share the same name space. |
||
| 821 | * If you have a normal session variable using the same name, it will be removed |
||
| 822 | * by this method. |
||
| 823 | * @see getFlash() |
||
| 824 | * @see setFlash() |
||
| 825 | * @see addFlash() |
||
| 826 | * @see removeFlash() |
||
| 827 | */ |
||
| 828 | public function removeAllFlashes() |
||
| 836 | |||
| 837 | /** |
||
| 838 | * Returns a value indicating whether there are flash messages associated with the specified key. |
||
| 839 | * @param string $key key identifying the flash message type |
||
| 840 | * @return boolean whether any flash messages exist under specified key |
||
| 841 | */ |
||
| 842 | public function hasFlash($key) |
||
| 846 | |||
| 847 | /** |
||
| 848 | * This method is required by the interface [[\ArrayAccess]]. |
||
| 849 | * @param mixed $offset the offset to check on |
||
| 850 | * @return boolean |
||
| 851 | */ |
||
| 852 | public function offsetExists($offset) |
||
| 858 | |||
| 859 | /** |
||
| 860 | * This method is required by the interface [[\ArrayAccess]]. |
||
| 861 | * @param integer $offset the offset to retrieve element. |
||
| 862 | * @return mixed the element at the offset, null if no element is found at the offset |
||
| 863 | */ |
||
| 864 | public function offsetGet($offset) |
||
| 870 | |||
| 871 | /** |
||
| 872 | * This method is required by the interface [[\ArrayAccess]]. |
||
| 873 | * @param integer $offset the offset to set element |
||
| 874 | * @param mixed $item the element value |
||
| 875 | */ |
||
| 876 | public function offsetSet($offset, $item) |
||
| 881 | |||
| 882 | /** |
||
| 883 | * This method is required by the interface [[\ArrayAccess]]. |
||
| 884 | * @param mixed $offset the offset to unset element |
||
| 885 | */ |
||
| 886 | public function offsetUnset($offset) |
||
| 891 | } |
||
| 892 |
Loading history...
If you suppress an error, we recommend checking for the error condition explicitly: