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
-
string
ACTION ¶'index|show|add|create|edit|update|remove|del|delete|view|item'
Regular expression for action names
-
string
DAY ¶'0[1-9]|[12][0-9]|3[01]'
Regular expression for days
-
string
ID ¶'[0-9]+'
Regular expression for auto increment IDs
-
string
MONTH ¶'0[1-9]|1[012]'
Regular expression for months
-
string
UUID ¶'[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
-
string
YEAR ¶'[12][0-9]{3}'
Regular expression for years
Property Summary
-
$_collection protected static
Cake\Routing\RouteCollection
The route collection routes would be added to.
-
$_defaultExtensions protected static
array
Default extensions defined with Router::extensions()
-
$_defaultRouteClass protected static
string
Default route class.
-
$_fullBaseUrl protected static
string
Contains the base string that will be applied to all generated URLs For example
https://example.com
-
$_initialState protected static
array
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.
-
$_namedExpressions protected static
array
Named expressions
-
$_requestContext protected static
array
A hash of request context data.
-
$_requests protected static
array
Maintains the request object stack for the current request. This will contain more than one request object when requestAction is used.
-
$_urlFilters protected static
callable[]
The stack of URL filters to apply against routing URLs before passing the parameters to the route collection.
-
$initialized public static
bool
Have routes been loaded
Method Summary
-
_applyUrlFilters() protected static
Applies all the connected URL filters to the URL.
-
_loadRoutes() protected static
Loads route configuration
-
addUrlFilter() public static
Add a URL filter to Router.
-
connect() public static
Connects a new Route in the router.
-
defaultRouteClass() public static
Get or set default route class.
-
extensions() public static
Get or set valid extensions for all routes connected later.
-
fullBaseUrl() public static
Sets 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 static
Gets the named route patterns for use in config/routes.php
-
getRequest() public static
Get the current request object, or the first one.
-
mapResources() public static deprecated
Generate REST resource routes for the given controller(s).
-
normalize() public static
Normalizes a URL for purposes of comparison.
-
parse() public static deprecated
Parses given URL string. Returns 'routing' parameters for that URL.
-
parseNamedParams() public static deprecated
Provides legacy support for named parameters on incoming URLs.
-
parseRequest() public static
Get the routing parameters for the request is possible.
-
plugin() public static
Add plugin routes.
-
popRequest() public static
Pops a request off of the request stack. Used when doing requestAction
-
prefix() public static
Create prefixed routes.
-
pushRequest() public static
Push a request onto the request stack. Pushing a request sets the request context used when generating URLs.
-
redirect() public static deprecated
Connects a new redirection Route in the router.
-
reload() public static
Reloads default Router settings. Resets all class variables and removes all connected routes.
-
reverse() public static
Reverses a parsed parameter array into a string.
-
routes() public static
Get the route scopes and their connected routes.
-
scope() public static
Create a routing scope.
-
setRequestContext() public static
Store the request context for a given request.
-
setRequestInfo() public static
Takes 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 static
Finds URL for specified action.
Method Detail
_applyUrlFilters() ¶ protected static
_applyUrlFilters(array $url): array
Applies all the connected URL filters to the URL.
Parameters
-
array
$url The URL array being modified.
Returns
array
See Also
\Cake\Routing\Router::addUrlFilter()
addUrlFilter() ¶ public static
addUrlFilter(callable $function): void
Add 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:
$params
The URL params being processed.$request
The 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, $request) {
if ($request->getParam('lang') && !isset($params['lang'])) {
$params['lang'] = $request->getParam('lang');
}
return $params;
});
Parameters
-
callable
$function The function to add
Returns
void
connect() ¶ public static
connect(string $route, array $defaults = [], array $options = []): void
Connects 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
void
Throws
Cake\Core\Exception\Exception
See Also
\Cake\Routing\Router::scope()
defaultRouteClass() ¶ public static
defaultRouteClass(string|null $routeClass = null): string|null
Get or set default route class.
Parameters
-
string|null
$routeClass optional Class name.
Returns
string|null
extensions() ¶ public static
extensions(array|string|null $extensions = null, bool $merge = true): array
Get 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->getParam('_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\Http\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
array
fullBaseUrl() ¶ public static
fullBaseUrl(string|null $base = null): string
Sets 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
string
getNamedExpressions() ¶ public static
getNamedExpressions(): array
Gets the named route patterns for use in config/routes.php
Returns
array
See Also
getRequest() ¶ public static
getRequest(bool $current = false): Cake\Http\ServerRequest|null
Get 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\Http\ServerRequest|null
mapResources() ¶ public static
mapResources(string|array $controller, array $options = []): void
Generate 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
void
See Also
normalize() ¶ public static
normalize(array|string $url = '/'): string
Normalizes a 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
string
parse() ¶ public static
parse(string $url, string $method = ''): array
Parses 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
array
Throws
Cake\Routing\Exception\MissingRouteException
When a route cannot be handled
parseNamedParams() ¶ public static
parseNamedParams(Cake\Http\ServerRequest $request, array $options = []): Cake\Http\ServerRequest
Provides 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
separator
The string to use as a separator. Defaults to:
.
Parameters
-
Cake\Http\ServerRequest
$request The request object to modify.
-
array
$options optional The array of options.
Returns
Cake\Http\ServerRequest
parseRequest() ¶ public static
parseRequest(Psr\Http\Message\ServerRequestInterface $request): array
Get the routing parameters for the request is possible.
Parameters
-
Psr\Http\Message\ServerRequestInterface
$request The request to parse request data from.
Returns
array
Throws
Cake\Routing\Exception\MissingRouteException
When a route cannot be handled
plugin() ¶ public static
plugin(string $name, array|callable $options = [], callable|null $callback = null): void
Add 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
void
popRequest() ¶ public static
popRequest(): Cake\Http\ServerRequest
Pops a request off of the request stack. Used when doing requestAction
Returns
Cake\Http\ServerRequest
See Also
\Cake\Routing\RequestActionTrait::requestAction()
prefix() ¶ public static
prefix(string $name, array|callable $params = [], callable|null $callback = null): void
Create 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.
The prefix name will be inflected to the underscore version to create
the routing path. If you want a custom path name, use the path
option.
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
void
pushRequest() ¶ public static
pushRequest(Cake\Http\ServerRequest $request): void
Push a request onto the request stack. Pushing a request sets the request context used when generating URLs.
Parameters
-
Cake\Http\ServerRequest
$request Request instance.
Returns
void
redirect() ¶ public static
redirect(string $route, array $url, array $options = []): void
Connects 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 A 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
void
See Also
reload() ¶ public static
reload(): void
Reloads default Router settings. Resets all class variables and removes all connected routes.
Returns
void
reverse() ¶ public static
reverse(Cake\Http\ServerRequest|array $params, bool $full = false): string
Reverses 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\Http\ServerRequest|array
$params The params array or Cake\Http\ServerRequest 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
string
routes() ¶ public static
routes(): Cake\Routing\Route\Route[]
Get the route scopes and their connected routes.
Returns
Cake\Routing\Route\Route[]
scope() ¶ public static
scope(string $path, array|callable $params = [], callable|null $callback = null): void
Create 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.
Options
The $params
array allows you to define options for the routing scope.
The options listed below are not available to be used as routing defaults
routeClass
The route class to use in this scope. Defaults toRouter::defaultRouteClass()
extensions
The extensions to enable in this scope. Defaults to the globally enabled extensions set withRouter::extensions()
Example
Router::scope('/blog', ['plugin' => 'Blog'], function ($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.
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
void
Throws
InvalidArgumentException
When an invalid callable is provided.
setRequestContext() ¶ public static
setRequestContext(Cake\Http\ServerRequestPsr\Http\Message\ServerRequestInterface $request): void
Store the request context for a given request.
Parameters
-
Cake\Http\ServerRequestPsr\Http\Message\ServerRequestInterface
$request The request instance.
Returns
void
Throws
InvalidArgumentException
When parameter is an incorrect type.
setRequestInfo() ¶ public static
setRequestInfo(Cake\Http\ServerRequest|array $request): void
Takes 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\Http\ServerRequest object or an array of arrays. Support for accepting arrays may be removed in the future.
Parameters
-
Cake\Http\ServerRequest|array
$request Parameters and path information or a Cake\Http\ServerRequest object.
Returns
void
url() ¶ public static
url(string|array|null $url = null, bool $full = false): string
Finds URL for specified action.
Returns a 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 likewebcal
orftp
. 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 ofRouter::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
string
Throws
Cake\Core\Exception\Exception
When 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
callable[]