Class Router
Parses the request URL into controller, action, and parameters. Uses the connected routes to match the incoming URL string to parameters that will allow the request to be dispatched. Also handles converting parameter lists into URL strings, using the connected routes. Routing allows you to decouple the way the world interacts with your application (URLs) and the implementation (controllers and actions).
Connecting routes
Connecting routes is done using Router::connect(). When parsing incoming requests or reverse matching parameters, routes are enumerated in the order they were connected. For more information on routes and how to connect them see Router::connect().
Constants
- 
          
          stringACTION ¶'index|show|add|create|edit|update|remove|del|delete|view|item'Regular expression for action names 
- 
          
          stringDAY ¶'0[1-9]|[12][0-9]|3[01]'Regular expression for days 
- 
          
          stringID ¶'[0-9]+'Regular expression for auto increment IDs 
- 
          
          stringMONTH ¶'0[1-9]|1[012]'Regular expression for months 
- 
          
          stringUUID ¶'[A-Fa-f0-9]{8}-[A-Fa-f0-9]{4}-[A-Fa-f0-9]{4}-[A-Fa-f0-9]{4}-[A-Fa-f0-9]{12}'Regular expression for UUIDs 
- 
          
          stringYEAR ¶'[12][0-9]{3}'Regular expression for years 
Property Summary
- 
        $_collection protected staticCake\Routing\RouteCollectionThe route collection routes would be added to. 
- 
        $_defaultExtensions protected staticarrayDefault extensions defined with Router::extensions() 
- 
        $_defaultRouteClass protected staticboolDefault route class. 
- 
        $_fullBaseUrl protected staticstringContains the base string that will be applied to all generated URLs For example https://example.com
- 
        $_initialState protected staticarrayInitial state is populated the first time reload() is called which is at the bottom of this file. This is a cheat as get_class_vars() returns the value of static vars even if they have changed. 
- 
        $_namedExpressions protected staticarrayNamed expressions 
- 
        $_requestContext protected staticarrayA hash of request context data. 
- 
        $_requests protected staticarrayMaintains the request object stack for the current request. This will contain more than one request object when requestAction is used. 
- 
        $_urlFilters protected staticarrayThe stack of URL filters to apply against routing URLs before passing the parameters to the route collection. 
- 
        $initialized public staticboolHave routes been loaded 
Method Summary
- 
          _applyUrlFilters() protected staticApplies all the connected URL filters to the URL. 
- 
          _loadRoutes() protected staticLoads route configuration 
- 
          addUrlFilter() public staticAdd a URL filter to Router. 
- 
          connect() public staticConnects a new Route in the router. 
- 
          defaultRouteClass() public staticGet or set default route class. 
- 
          extensions() public staticGet or set valid extensions for all routes connected later. 
- 
          fullBaseUrl() public staticSets the full base URL that will be used as a prefix for generating fully qualified URLs for this application. If not parameters are passed, the currently configured value is returned. 
- 
          getNamedExpressions() public staticGets the named route patterns for use in config/routes.php 
- 
          getRequest() public staticGet the current request object, or the first one. 
- 
          mapResources() public static deprecatedGenerate REST resource routes for the given controller(s). 
- 
          normalize() public staticNormalizes an URL for purposes of comparison. 
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          parse() public staticParses given URL string. Returns 'routing' parameters for that URL. 
- 
          parseNamedParams() public static deprecatedProvides legacy support for named parameters on incoming URLs. 
- 
          plugin() public staticAdd plugin routes. 
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          popRequest() public staticPops a request off of the request stack. Used when doing requestAction 
- 
          prefix() public staticCreate prefixed routes. 
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          pushRequest() public staticPush a request onto the request stack. Pushing a request sets the request context used when generating URLs. 
- 
          redirect() public static deprecatedConnects a new redirection Route in the router. 
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          reload() public staticReloads default Router settings. Resets all class variables and removes all connected routes. 
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          reverse() public staticReverses a parsed parameter array into a string. 
- 
          routes() public staticGet the route scopes and their connected routes. 
- 
          scope() public staticCreate a routing scope. 
- 
          setRequestContext() public staticStore the request context for a given request. 
- 
          setRequestInfo() public staticTakes parameter and path information back from the Dispatcher, sets these parameters as the current request parameters that are merged with URL arrays created later in the request. 
- 
          url() public staticFinds URL for specified action. 
Method Detail
_applyUrlFilters() ¶ protected static
_applyUrlFilters(array $url): arrayApplies all the connected URL filters to the URL.
Parameters
- 
                array$url
- The URL array being modified. 
Returns
arrayThe modified URL.
See Also
\Cake\Routing\Router::addUrlFilter()
addUrlFilter() ¶ public static
addUrlFilter(callable $function): voidAdd a URL filter to Router.
URL filter functions are applied to every array $url provided to Router::url() before the URLs are sent to the route collection.
Callback functions should expect the following parameters:
- $paramsThe URL params being processed.
- $requestThe current request.
The URL filter function should always return the params even if unmodified.
Usage
URL filters allow you to easily implement features like persistent parameters.
Router::addUrlFilter(function ($params, $request) {
 if (isset($request->params['lang']) && !isset($params['lang'])) {
   $params['lang'] = $request->params['lang'];
 }
 return $params;
});Parameters
- 
                callable$function
- The function to add 
Returns
voidconnect() ¶ public static
connect(string $route, array $defaults = [], array $options = []): voidConnects a new Route in the router.
Compatibility proxy to \Cake\Routing\RouteBuilder::connect() in the / scope.
Parameters
- 
                string$route
- A string describing the template of the route 
- 
                array$defaults optional
- An array describing the default route parameters. These parameters will be used by default and can supply routing parameters that are not dynamic. See above. 
- 
                array$options optional
- An array matching the named elements in the route to regular expressions which that element should match. Also contains additional parameters such as which routed parameters should be shifted into the passed arguments, supplying patterns for routing parameters and supplying the name of a custom routing class. 
Returns
voidThrows
Cake\Core\Exception\ExceptionSee Also
\Cake\Routing\Router::scope()
defaultRouteClass() ¶ public static
defaultRouteClass(string|null $routeClass = null): string|nullGet or set default route class.
Parameters
- 
                string|null$routeClass optional
- Class name. 
Returns
string|nullextensions() ¶ public static
extensions(array|string|null $extensions = null, bool $merge = true): arrayGet or set valid extensions for all routes connected later.
Instructs the router to parse out file extensions
from the URL. For example, http://example.com/posts.rss would yield a file
extension of "rss". The file extension itself is made available in the
controller as $this->request->params['_ext'], and is used by the RequestHandler
component to automatically switch to alternate layouts and templates, and
load helpers corresponding to the given content, i.e. RssHelper. Switching
layouts and helpers requires that the chosen extension has a defined mime type
in Cake\Network\Response.
A string or an array of valid extensions can be passed to this method. If called without any parameters it will return current list of set extensions.
Parameters
- 
                array|string|null$extensions optional
- List of extensions to be added. 
- 
                bool$merge optional
- Whether to merge with or override existing extensions. Defaults to - true.
Returns
arrayArray of extensions Router is configured to parse.
fullBaseUrl() ¶ public static
fullBaseUrl(string|null $base = null): stringSets the full base URL that will be used as a prefix for generating fully qualified URLs for this application. If not parameters are passed, the currently configured value is returned.
Note:
If you change the configuration value App.fullBaseUrl during runtime
and expect the router to produce links using the new setting, you are
required to call this method passing such value again.
Parameters
- 
                string|null$base optional
- the prefix for URLs generated containing the domain. For example: - http://example.com
Returns
stringgetNamedExpressions() ¶ public static
getNamedExpressions(): arrayGets the named route patterns for use in config/routes.php
Returns
arrayNamed route elements
See Also
getRequest() ¶ public static
getRequest(bool $current = false): Cake\Network\Request|nullGet the current request object, or the first one.
Parameters
- 
                bool$current optional
- True to get the current request, or false to get the first one. 
Returns
Cake\Network\Request|nullmapResources() ¶ public static
mapResources(string|array $controller, array $options = []): voidGenerate REST resource routes for the given controller(s).
Compatibility proxy to \Cake\Routing\RouteBuilder::resources(). Additional, compatibility around prefixes and plugins and prefixes is handled by this method.
A quick way to generate a default routes to a set of REST resources (controller(s)).
Usage
Connect resource routes for an app controller:
Router::mapResources('Posts');Connect resource routes for the Comment controller in the Comments plugin:
Router::mapResources('Comments.Comment');Plugins will create lower_case underscored resource routes. e.g
/comments/comment
Connect resource routes for the Posts controller in the Admin prefix:
Router::mapResources('Posts', ['prefix' => 'admin']);Prefixes will create lower_case underscored resource routes. e.g
/admin/posts
Options:
- 'id' - The regular expression fragment to use when matching IDs. By default, matches integer values and UUIDs.
- 'prefix' - Routing prefix to use for the generated routes. Defaults to ''. Using this option will create prefixed routes, similar to using Routing.prefixes.
- 'only' - Only connect the specific list of actions.
- 'actions' - Override the method names used for connecting actions.
- 'map' - Additional resource routes that should be connected. If you define 'only' and 'map', make sure that your mapped methods are also in the 'only' list.
Parameters
- 
                string|array$controller
- A controller name or array of controller names (i.e. "Posts" or "ListItems") 
- 
                array$options optional
- Options to use when generating REST routes 
Returns
voidSee Also
normalize() ¶ public static
normalize(array|string $url = '/'): stringNormalizes an URL for purposes of comparison.
Will strip the base path off and replace any double /'s. It will not unify the casing and underscoring of the input value.
Parameters
- 
                array|string$url optional
- URL to normalize Either an array or a string URL. 
Returns
stringNormalized URL
parse() ¶ public static
parse(string $url, string $method = ''): arrayParses given URL string. Returns 'routing' parameters for that URL.
Parameters
- 
                string$url
- URL to be parsed. 
- 
                string$method optional
- The HTTP method being used. 
Returns
arrayParsed elements from URL.
Throws
Cake\Routing\Exception\MissingRouteExceptionWhen a route cannot be handled
parseNamedParams() ¶ public static
parseNamedParams(Cake\Network\Request $request, array $options = []): Cake\Network\RequestProvides legacy support for named parameters on incoming URLs.
Checks the passed parameters for elements containing $options['separator']
Those parameters are split and parsed as if they were old style named parameters.
The parsed parameters will be moved from params['pass'] to params['named'].
Options
- separatorThe string to use as a separator. Defaults to- :.
Parameters
- 
                Cake\Network\Request$request
- The request object to modify. 
- 
                array$options optional
- The array of options. 
Returns
Cake\Network\RequestThe modified request
plugin() ¶ public static
plugin(string $name, array|callable $options = [], callable|null $callback = null): voidAdd plugin routes.
This method creates a scoped route collection that includes relevant plugin information.
The plugin name will be inflected to the underscore version to create
the routing path. If you want a custom path name, use the path option.
Routes connected in the scoped collection will have the correct path segment prepended, and have a matching plugin routing key set.
Parameters
- 
                string$name
- The plugin name to build routes for 
- 
                array|callable$options optional
- Either the options to use, or a callback 
- 
                callable|null$callback optional
- The callback to invoke that builds the plugin routes. Only required when $options is defined 
Returns
voidpopRequest() ¶ public static
popRequest(): Cake\Network\RequestPops a request off of the request stack. Used when doing requestAction
Returns
Cake\Network\RequestThe request removed from the stack.
See Also
\Cake\Routing\RequestActionTrait::requestAction()
prefix() ¶ public static
prefix(string $name, array|callable $params = [], callable|null $callback = null): voidCreate prefixed routes.
This method creates a scoped route collection that includes relevant prefix information.
The path parameter is used to generate the routing parameter name.
For example a path of admin would result in 'prefix' => 'admin' being
applied to all connected routes.
You can re-open a prefix as many times as necessary, as well as nest prefixes.
Nested prefixes will result in prefix values like admin/api which translates
to the Controller\Admin\Api\ namespace.
Parameters
- 
                string$name
- The prefix name to use. 
- 
                array|callable$params optional
- An array of routing defaults to add to each connected route. If you have no parameters, this argument can be a callable. 
- 
                callable|null$callback optional
- The callback to invoke that builds the prefixed routes. 
Returns
voidpushRequest() ¶ public static
pushRequest(Cake\Network\Request $request): voidPush a request onto the request stack. Pushing a request sets the request context used when generating URLs.
Parameters
- 
                Cake\Network\Request$request
- Request instance. 
Returns
voidredirect() ¶ public static
redirect(string $route, array $url, array $options = []): voidConnects a new redirection Route in the router.
Compatibility proxy to \Cake\Routing\RouteBuilder::redirect() in the / scope.
Parameters
- 
                string$route
- A string describing the template of the route 
- 
                array$url
- An URL to redirect to. Can be a string or a Cake array-based URL 
- 
                array$options optional
- An array matching the named elements in the route to regular expressions which that element should match. Also contains additional parameters such as which routed parameters should be shifted into the passed arguments. As well as supplying patterns for routing parameters. 
Returns
voidSee Also
reload() ¶ public static
reload(): voidReloads default Router settings. Resets all class variables and removes all connected routes.
Returns
voidreverse() ¶ public static
reverse(Cake\Network\Request|array $params, bool $full = false): stringReverses a parsed parameter array into a string.
Works similarly to Router::url(), but since parsed URL's contain additional 'pass' as well as 'url.url' keys. Those keys need to be specially handled in order to reverse a params array into a string URL.
This will strip out 'autoRender', 'bare', 'requested', and 'return' param names as those are used for CakePHP internals and should not normally be part of an output URL.
Parameters
- 
                Cake\Network\Request|array$params
- The params array or Cake\Network\Request object that needs to be reversed. 
- 
                bool$full optional
- Set to true to include the full URL including the protocol when reversing the URL. 
Returns
stringThe string that is the reversed result of the array
routes() ¶ public static
routes(): arrayGet the route scopes and their connected routes.
Returns
arrayscope() ¶ public static
scope(string $path, array|callable $params = [], callable|null $callback = null): voidCreate a routing scope.
Routing scopes allow you to keep your routes DRY and avoid repeating common path prefixes, and or parameter sets.
Scoped collections will be indexed by path for faster route parsing. If you re-open or re-use a scope the connected routes will be merged with the existing ones.
Example
Router::scope('/blog', ['plugin' => 'Blog'], function ($routes) {
   $routes->connect('/', ['controller' => 'Articles']);
});The above would result in a /blog/ route being created, with both the
plugin & controller default parameters set.
You can use Router::plugin() and Router::prefix() as shortcuts to creating specific kinds of scopes.
Routing scopes will inherit the globally set extensions configured with
Router::extensions(). You can also set valid extensions using
$routes->extensions() in your closure.
Parameters
- 
                string$path
- The path prefix for the scope. This path will be prepended to all routes connected in the scoped collection. 
- 
                array|callable$params optional
- An array of routing defaults to add to each connected route. If you have no parameters, this argument can be a callable. 
- 
                callable|null$callback optional
- The callback to invoke with the scoped collection. 
Returns
voidThrows
InvalidArgumentExceptionWhen an invalid callable is provided.
setRequestContext() ¶ public static
setRequestContext(Cake\Network\Request|Psr\Http\Message\ServerRequestInterface $request): voidStore the request context for a given request.
Parameters
- 
                Cake\Network\Request|Psr\Http\Message\ServerRequestInterface$request
- The request instance. 
Returns
voidThrows
InvalidArgumentExceptionWhen parameter is an incorrect type.
setRequestInfo() ¶ public static
setRequestInfo(Cake\Network\Request|array $request): voidTakes parameter and path information back from the Dispatcher, sets these parameters as the current request parameters that are merged with URL arrays created later in the request.
Nested requests will create a stack of requests. You can remove requests using Router::popRequest(). This is done automatically when using Object::requestAction().
Will accept either a Cake\Network\Request object or an array of arrays. Support for accepting arrays may be removed in the future.
Parameters
- 
                Cake\Network\Request|array$request
- Parameters and path information or a Cake\Network\Request object. 
Returns
voidurl() ¶ public static
url(string|array|null $url = null, bool $full = false): stringFinds URL for specified action.
Returns an URL pointing to a combination of controller and action.
Usage
- Router::url('/posts/edit/1');Returns the string with the base dir prepended. This usage does not use reverser routing.
- Router::url(['controller' => 'posts', 'action' => 'edit']);Returns a URL generated through reverse routing.
- Router::url(['_name' => 'custom-name', ...]);Returns a URL generated through reverse routing. This form allows you to leverage named routes.
There are a few 'special' parameters that can change the final URL string that is generated
- _base- Set to false to remove the base path from the generated URL. If your application is not in the root directory, this can be used to generate URLs that are 'cake relative'. cake relative URLs are required when using requestAction.
- _scheme- Set to create links on different schemes like- webcalor- ftp. Defaults to the current scheme.
- _host- Set the host to use for the link. Defaults to the current host.
- _port- Set the port if you need to create links on non-standard ports.
- _full- If true output of- Router::fullBaseUrl()will be prepended to generated URLs.
- #- Allows you to set URL hash fragments.
- _ssl- Set to true to convert the generated URL to https, or false to force http.
- _name- Name of route. If you have setup named routes you can use this key to specify it.
Parameters
- 
                string|array|null$url optional
- An array specifying any of the following: 'controller', 'action', 'plugin' additionally, you can provide routed elements or query string parameters. If string it can be name any valid url string. 
- 
                bool$full optional
- If true, the full base URL will be prepended to the result. Default is false. 
Returns
stringFull translated URL with base path.
Throws
Cake\Core\Exception\ExceptionWhen the route name is not found
Property Detail
$_collection ¶ protected static
The route collection routes would be added to.
Type
Cake\Routing\RouteCollection$_defaultExtensions ¶ protected static
Default extensions defined with Router::extensions()
Type
array$_fullBaseUrl ¶ protected static
Contains the base string that will be applied to all generated URLs
For example https://example.com
Type
string$_initialState ¶ protected static
Initial state is populated the first time reload() is called which is at the bottom of this file. This is a cheat as get_class_vars() returns the value of static vars even if they have changed.
Type
array$_requests ¶ protected static
Maintains the request object stack for the current request. This will contain more than one request object when requestAction is used.
Type
array$_urlFilters ¶ protected static
The stack of URL filters to apply against routing URLs before passing the parameters to the route collection.
Type
array