Complex classes like Router 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 Router, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 28 | class Router |
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| 29 | { |
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| 30 | /** |
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| 31 | * @var bool true if this router dispatches itself when destroyed, false |
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| 32 | * otherwise |
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| 33 | */ |
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| 34 | public $isAutoDispatched = true; |
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| 35 | |||
| 36 | /** |
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| 37 | * @var bool true if this router accepts _method HTTP hacks for PUT and |
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| 38 | * DELETE via POST |
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| 39 | */ |
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| 40 | public $methodOverriding = false; |
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| 41 | |||
| 42 | /** |
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| 43 | * @var array An array of routines that must be applied to every route |
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| 44 | * instance |
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| 45 | */ |
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| 46 | protected $globalRoutines = array(); |
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| 47 | |||
| 48 | /** |
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| 49 | * @var array An array of main routes for this router |
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| 50 | */ |
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| 51 | protected $routes = array(); |
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| 52 | |||
| 53 | /** |
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| 54 | * @var array An array of side routes (errors, exceptions, etc) for this |
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| 55 | * router |
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| 56 | */ |
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| 57 | protected $sideRoutes = array(); |
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| 58 | |||
| 59 | /** |
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| 60 | * @var string The prefix for every requested URI starting with a slash |
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| 61 | */ |
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| 62 | protected $virtualHost = ''; |
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| 63 | |||
| 64 | /** |
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| 65 | * Compares two patterns and returns the first one according to |
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| 66 | * similarity or ocurrences of a subpattern |
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| 67 | * |
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| 68 | * @param string $patternA some pattern |
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| 69 | * @param string $patternB some pattern |
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| 70 | * @param string $sub pattern needle |
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| 71 | * |
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| 72 | * @return bool true if $patternA is before $patternB |
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| 73 | */ |
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| 74 | 10 | public static function compareOcurrences($patternA, $patternB, $sub) |
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| 79 | |||
| 80 | /** |
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| 81 | * Compares two patterns and returns the first one according to |
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| 82 | * similarity, patterns or ocurrences of a subpattern |
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| 83 | * |
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| 84 | * @param string $patternA some pattern |
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| 85 | * @param string $patternB some pattern |
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| 86 | * @param string $sub pattern needle |
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| 87 | * |
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| 88 | * @return bool true if $patternA is before $patternB |
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| 89 | */ |
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| 90 | public static function compareRoutePatterns($patternA, $patternB, $sub) |
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| 95 | |||
| 96 | /** |
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| 97 | * Cleans up an return an array of extracted parameters |
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| 98 | * |
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| 99 | * @param array $params an array of params |
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| 100 | * |
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| 101 | * @see Respect\Rest\Request::$params |
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| 102 | * |
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| 103 | * @return array only the non-empty params |
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| 104 | */ |
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| 105 | 117 | protected static function cleanUpParams(array $params) |
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| 119 | |||
| 120 | /** |
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| 121 | * Builds and appends many kinds of routes magically. |
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| 122 | * |
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| 123 | * @param string $method The HTTP method for the new route |
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| 124 | */ |
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| 125 | 113 | public function __call($method, $args) |
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| 200 | |||
| 201 | /** |
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| 202 | * @param mixed $virtualHost null for no virtual host or a string prefix |
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| 203 | * for every URI |
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| 204 | */ |
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| 205 | 148 | public function __construct($virtualHost = null) |
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| 209 | |||
| 210 | /** If $this->autoDispatched, dispatches the app */ |
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| 211 | 50 | public function __destruct() |
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| 219 | |||
| 220 | /** Runs the router and returns its output */ |
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| 221 | public function __toString() |
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| 232 | |||
| 233 | /** |
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| 234 | * Applies a routine to every route |
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| 235 | * |
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| 236 | * @param string $routineName a name of some routine (Accept, When, etc) |
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| 237 | * @param array $param1 some param |
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| 238 | * @param array $param2 some param |
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| 239 | * @param array $etc This function accepts infinite params |
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| 240 | * that will be passed to the routine instance |
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| 241 | * |
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| 242 | * @see Respect\Rest\Request::$params |
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| 243 | * |
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| 244 | * @return Router the router itself. |
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| 245 | */ |
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| 246 | 3 | public function always($routineName, $param1 = null, $param2 = null, $etc = null) |
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| 261 | |||
| 262 | /** |
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| 263 | * Appends a pre-built route to the dispatcher |
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| 264 | * |
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| 265 | * @param AbstractRoute $route Any route |
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| 266 | * |
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| 267 | * @return Router the router itself |
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| 268 | */ |
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| 269 | 141 | public function appendRoute(AbstractRoute $route) |
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| 283 | |||
| 284 | /** |
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| 285 | * Appends a pre-built side route to the dispatcher |
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| 286 | * |
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| 287 | * @param AbstractRoute $route Any route |
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| 288 | * |
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| 289 | * @return Router the router itself |
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| 290 | */ |
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| 291 | public function appendSideRoute(AbstractRoute $route) |
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| 301 | |||
| 302 | /** |
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| 303 | * Creates and returns a callback-based route |
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| 304 | * |
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| 305 | * @param string $method The HTTP method |
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| 306 | * @param string $path The URI pattern for this route |
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| 307 | * @param callable $callback Any callback for this route |
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| 308 | * @param array $arguments Additional arguments for the callback |
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| 309 | * |
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| 310 | * @return Respect\Rest\Routes\Callback The route instance |
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| 311 | */ |
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| 312 | 96 | public function callbackRoute( |
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| 323 | |||
| 324 | /** |
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| 325 | * Creates and returns a class-based route |
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| 326 | * |
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| 327 | * @param string $method The HTTP method |
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| 328 | * @param string $path The URI pattern for this route |
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| 329 | * @param string $class Some class name |
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| 330 | * @param array $arguments The class constructor arguments |
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| 331 | * |
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| 332 | * @return Respect\Rest\Routes\ClassName The route instance |
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| 333 | */ |
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| 334 | 12 | public function classRoute($method, $path, $class, array $arguments = array()) |
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| 341 | |||
| 342 | /** |
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| 343 | * Dispatches the router |
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| 344 | * |
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| 345 | * @param mixed $method null to infer it or an HTTP method (GET, POST, etc) |
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| 346 | * @param mixed $uri null to infer it or a request URI path (/foo/bar) |
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| 347 | * |
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| 348 | * @return mixed Whatever you returned from your model |
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| 349 | */ |
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| 350 | 98 | public function dispatch($method = null, $uri = null) |
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| 354 | |||
| 355 | /** |
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| 356 | * Dispatch the current route with a custom Request |
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| 357 | * |
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| 358 | * @param Request $request Some request |
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| 359 | * |
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| 360 | * @return mixed Whatever the dispatched route returns |
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| 361 | */ |
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| 362 | 134 | public function dispatchRequest(Request $request = null) |
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| 370 | |||
| 371 | /** |
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| 372 | * Creates and returns a side-route for catching exceptions |
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| 373 | * |
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| 374 | * @param string $className The name of the exception class you want to |
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| 375 | * catch. 'Exception' will catch them all. |
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| 376 | * @param string $callback The function to run when an exception is cautght |
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| 377 | * |
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| 378 | * @return Respect\Rest\Routes\Exception |
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| 379 | */ |
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| 380 | 1 | public function exceptionRoute($className, $callback = null) |
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| 387 | |||
| 388 | /** |
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| 389 | * Creates and returns a side-route for catching errors |
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| 390 | * |
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| 391 | * @param string $callback The function to run when an error is cautght |
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| 392 | * |
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| 393 | * @return Respect\Rest\Routes\Error |
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| 394 | */ |
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| 395 | 1 | public function errorRoute($callback) |
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| 402 | |||
| 403 | /** |
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| 404 | * Creates and returns an factory-based route |
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| 405 | * |
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| 406 | * @param string $method The HTTP metod (GET, POST, etc) |
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| 407 | * @param string $path The URI Path (/foo/bar...) |
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| 408 | * @param string $className The class name of the factored instance |
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| 409 | * @param string $factory Any callable |
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| 410 | * |
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| 411 | * @return Respect\Rest\Routes\Factory The route created |
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| 412 | */ |
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| 413 | 3 | public function factoryRoute($method, $path, $className, $factory) |
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| 420 | |||
| 421 | /** |
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| 422 | * Iterates over a list of routes and return the allowed methods for them |
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| 423 | * |
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| 424 | * @param array $routes an array of AbstractRoute |
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| 425 | * |
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| 426 | * @return array an array of unique allowed methods |
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| 427 | */ |
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| 428 | 134 | public function getAllowedMethods(array $routes) |
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| 438 | |||
| 439 | /** |
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| 440 | * Checks if router overrides the method with _method hack |
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| 441 | * |
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| 442 | * @return bool true if the router overrides current request method, false |
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| 443 | * otherwise |
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| 444 | */ |
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| 445 | 134 | public function hasDispatchedOverridenMethod() |
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| 452 | |||
| 453 | /** |
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| 454 | * Creates and returns an instance-based route |
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| 455 | * |
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| 456 | * @param string $method The HTTP metod (GET, POST, etc) |
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| 457 | * @param string $path The URI Path (/foo/bar...) |
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| 458 | * @param string $instance An instance of Routinable |
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| 459 | * |
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| 460 | * @return Respect\Rest\Routes\Instance The route created |
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| 461 | */ |
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| 462 | 8 | public function instanceRoute($method, $path, $instance) |
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| 469 | |||
| 470 | /** |
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| 471 | * Checks if request is a global OPTIONS (OPTIONS * HTTP/1.1) |
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| 472 | * |
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| 473 | * @return bool true if the request is a global options, false otherwise |
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| 474 | */ |
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| 475 | 134 | public function isDispatchedToGlobalOptionsMethod() |
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| 480 | |||
| 481 | /** |
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| 482 | * Checks if a request doesn't apply for routes at all |
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| 483 | * |
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| 484 | * @param Request $request A request |
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| 485 | * |
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| 486 | * @return bool true if the request doesn't apply for routes |
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| 487 | */ |
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| 488 | 134 | public function isRoutelessDispatch(Request $request = null) |
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| 512 | |||
| 513 | /** |
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| 514 | * Performs the main route dispatching mechanism |
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| 515 | */ |
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| 516 | 132 | public function routeDispatch() |
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| 536 | |||
| 537 | /** |
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| 538 | * Dispatches and get response with default request parameters |
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| 539 | * |
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| 540 | * @param Request $request Some request |
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| 541 | * |
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| 542 | * @return string the response string |
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| 543 | */ |
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| 544 | 18 | public function run(Request $request = null) |
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| 566 | |||
| 567 | /** |
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| 568 | * Creates and returns a static route |
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| 569 | * |
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| 570 | * @param string $method The HTTP method (GET, POST, etc) |
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| 571 | * @param string $path The URI Path (/foo/bar...) |
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| 572 | * @param string $staticValue Some static value to be printed |
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| 573 | * |
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| 574 | * @return Respect\Rest\Routes\StaticValue The route created |
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| 575 | */ |
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| 576 | 23 | public function staticRoute($method, $path, $staticValue) |
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| 583 | |||
| 584 | /** Applies the virtualHost prefix on the current request */ |
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| 585 | 132 | protected function applyVirtualHost() |
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| 595 | |||
| 596 | /** |
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| 597 | * Configures a request for a specific route with specific parameters |
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| 598 | * |
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| 599 | * @param Request $request Some request |
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| 600 | * @param AbstractRoute $route Some route |
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| 601 | * @param array $params A list of URI params |
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| 602 | * |
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| 603 | * @see Respect\Rest\Request::$params |
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| 604 | * |
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| 605 | * @return Request a configured Request instance |
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| 606 | */ |
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| 607 | 117 | protected function configureRequest( |
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| 617 | |||
| 618 | /** |
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| 619 | * Return routes matched by path |
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| 620 | * |
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| 621 | * @return SplObjectStorage a list of routes matched by path |
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| 622 | */ |
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| 623 | 132 | protected function getMatchedRoutesByPath() |
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| 635 | |||
| 636 | /** |
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| 637 | * Sends an Allow header with allowed methods from a list |
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| 638 | * |
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| 639 | * @param array $allowedMethods A list of allowed methods |
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| 640 | * |
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| 641 | * @return null sends an Allow header. |
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| 642 | */ |
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| 643 | 9 | protected function informAllowedMethods(array $allowedMethods) |
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| 647 | |||
| 648 | /** |
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| 649 | * Informs the PHP environment of a not allowed method alongside |
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| 650 | * its allowed methods for that path |
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| 651 | * |
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| 652 | * @param array $allowedMethods A list of allowed methods |
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| 653 | * |
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| 654 | * @return null sends HTTP Status Line and Allow header. |
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| 655 | */ |
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| 656 | 6 | protected function informMethodNotAllowed(array $allowedMethods) |
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| 667 | |||
| 668 | /** |
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| 669 | * Handles a OPTIONS request, inform of the allowed methods and |
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| 670 | * calls custom OPTIONS handler (if any). |
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| 671 | * |
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| 672 | * @param array $allowedMethods A list of allowed methods |
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| 673 | * @param \SplObjectStorage $matchedByPath A list of matched routes by path |
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| 674 | * |
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| 675 | * @return null sends Allow header. |
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| 676 | */ |
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| 677 | 3 | protected function handleOptionsRequest(array $allowedMethods, \SplObjectStorage $matchedByPath) |
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| 687 | |||
| 688 | /** |
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| 689 | * Checks if a route matches a method |
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| 690 | * |
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| 691 | * @param AbstractRoute $route A route instance |
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| 692 | * @param string $methodName Name of the method to match |
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| 693 | * |
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| 694 | * @return bool true if route matches |
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| 695 | */ |
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| 696 | 123 | protected function matchesMethod(AbstractRoute $route, $methodName) |
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| 706 | |||
| 707 | /** |
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| 708 | * Returns true if the passed route matches the passed request |
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| 709 | * |
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| 710 | * @param Request $request Some request |
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| 711 | * @param AbstractRoute $route Some route |
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| 712 | * @param array $params A list of URI params |
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| 713 | * |
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| 714 | * @see Respect\Rest\Request::$params |
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| 715 | * |
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| 716 | * @return bool true if the route matches the request with that params |
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| 717 | */ |
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| 718 | 129 | protected function matchRoute( |
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| 729 | |||
| 730 | /** |
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| 731 | * Checks if a route matches its routines |
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| 732 | * |
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| 733 | * @param \SplObjectStorage $matchedByPath A list of routes matched by path |
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| 734 | * |
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| 735 | * @return bool true if route matches its routines |
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| 736 | */ |
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| 737 | 123 | protected function routineMatch(\SplObjectStorage $matchedByPath) |
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| 758 | |||
| 759 | /** Sorts current routes according to path and parameters */ |
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| 760 | 141 | protected function sortRoutesByComplexity() |
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| 794 | } |
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| 795 |
This check looks for calls to methods that do not seem to exist on a given type. It looks for the method on the type itself as well as in inherited classes or implemented interfaces.
This is most likely a typographical error or the method has been renamed.