Router
in package
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().
Table of Contents
Constants
- ACTION = 'index|show|add|create|edit|update|remove|del|delete|view|item'
- Regular expression for action names
- DAY = '0[1-9]|[12][0-9]|3[01]'
- Regular expression for days
- ID = '[0-9]+'
- Regular expression for auto increment IDs
- MONTH = '0[1-9]|1[012]'
- Regular expression for months
- 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
- YEAR = '[12][0-9]{3}'
- Regular expression for years
Properties
- $_collection : RouteCollection
- The route collection routes would be added to.
- $_defaultExtensions : array<string|int, string>
- Default extensions defined with Router::extensions()
- $_defaultRouteClass : string
- Default route class.
- $_fullBaseUrl : string|null
- Contains the base string that will be applied to all generated URLs For example `https://example.com`
- $_initialState : array<string|int, mixed>
- 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 : array<string, string>
- Named expressions
- $_request : ServerRequest
- Maintains the request object reference.
- $_requestContext : array<string, mixed>
- A hash of request context data.
- $_routePaths : array<string, mixed>
- Cache of parsed route paths
- $_urlFilters : array<string|int, callable>
- The stack of URL filters to apply against routing URLs before passing the parameters to the route collection.
Methods
- addUrlFilter() : void
- Add a URL filter to Router.
- connect() : void
- Connects a new Route in the router.
- createRouteBuilder() : RouteBuilder
- Create a RouteBuilder for the provided path.
- defaultRouteClass() : string|null
- Get or set default route class.
- extensions() : array<string|int, string>
- Get or set valid extensions for all routes connected later.
- fullBaseUrl() : string
- Sets the full base URL that will be used as a prefix for generating fully qualified URLs for this application. If no parameters are passed, the currently configured value is returned.
- getNamedExpressions() : array<string, string>
- Gets the named route patterns for use in config/routes.php
- getRequest() : ServerRequest|null
- Get the current request object.
- getRouteCollection() : RouteCollection
- Get the RouteCollection inside the Router
- normalize() : string
- Normalizes a URL for purposes of comparison.
- parseRequest() : array<string|int, mixed>
- Get the routing parameters for the request if possible.
- parseRoutePath() : array<string, string>
- Parse a string route path
- pathUrl() : string
- Generate URL for route path.
- plugin() : void
- Add plugin routes.
- prefix() : void
- Create prefixed routes.
- reload() : void
- Reloads default Router settings. Resets all class variables and removes all connected routes.
- reverse() : string
- Reverses a parsed parameter array into a string.
- reverseToArray() : array<string|int, mixed>
- Reverses a parsed parameter array into an array.
- routeExists() : bool
- Finds URL for specified action.
- routes() : array<string|int, Route>
- Get the route scopes and their connected routes.
- scope() : void
- Create a routing scope.
- setRequest() : void
- Set current request instance.
- setRouteCollection() : void
- Set the RouteCollection inside the Router
- url() : string
- Finds URL for specified action.
- _applyUrlFilters() : array<string|int, mixed>
- Applies all the connected URL filters to the URL.
- unwrapShortString() : array<string|int, mixed>
- Inject route defaults from `_path` key
Constants
ACTION
Regular expression for action names
public
string
ACTION
= 'index|show|add|create|edit|update|remove|del|delete|view|item'
DAY
Regular expression for days
public
string
DAY
= '0[1-9]|[12][0-9]|3[01]'
ID
Regular expression for auto increment IDs
public
string
ID
= '[0-9]+'
MONTH
Regular expression for months
public
string
MONTH
= '0[1-9]|1[012]'
UUID
Regular expression for UUIDs
public
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}'
YEAR
Regular expression for years
public
string
YEAR
= '[12][0-9]{3}'
Properties
$_collection
The route collection routes would be added to.
protected
static RouteCollection
$_collection
$_defaultExtensions
Default extensions defined with Router::extensions()
protected
static array<string|int, string>
$_defaultExtensions
= []
$_defaultRouteClass
Default route class.
protected
static string
$_defaultRouteClass
= \Cake\Routing\Route\Route::class
$_fullBaseUrl
Contains the base string that will be applied to all generated URLs For example `https://example.com`
protected
static string|null
$_fullBaseUrl
$_initialState
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.
protected
static array<string|int, mixed>
$_initialState
= []
$_namedExpressions
Named expressions
protected
static array<string, string>
$_namedExpressions
= ['Action' => \Cake\Routing\Router::ACTION, 'Year' => \Cake\Routing\Router::YEAR, 'Month' => \Cake\Routing\Router::MONTH, 'Day' => \Cake\Routing\Router::DAY, 'ID' => \Cake\Routing\Router::ID, 'UUID' => \Cake\Routing\Router::UUID]
$_request
Maintains the request object reference.
protected
static ServerRequest
$_request
$_requestContext
A hash of request context data.
protected
static array<string, mixed>
$_requestContext
= []
$_routePaths
Cache of parsed route paths
protected
static array<string, mixed>
$_routePaths
= []
$_urlFilters
The stack of URL filters to apply against routing URLs before passing the parameters to the route collection.
protected
static array<string|int, callable>
$_urlFilters
= []
Methods
addUrlFilter()
Add a URL filter to Router.
public
static addUrlFilter(callable $function) : void
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
- $function : callable
-
The function to add
connect()
Connects a new Route in the router.
public
static connect(Route|string $route[, array<string|int, mixed>|string $defaults = [] ][, array<string, mixed> $options = [] ]) : void
Use the non-static method RouteBuilder::connect()
instead.
Compatibility proxy to \Cake\Routing\RouteBuilder::connect() in the /
scope.
Parameters
- $route : Route|string
-
A string describing the template of the route
- $defaults : array<string|int, mixed>|string = []
-
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.
- $options : array<string, mixed> = []
-
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.
Tags
createRouteBuilder()
Create a RouteBuilder for the provided path.
public
static createRouteBuilder(string $path[, array<string, mixed> $options = [] ]) : RouteBuilder
Parameters
- $path : string
-
The path to set the builder to.
- $options : array<string, mixed> = []
-
The options for the builder
Return values
RouteBuilderdefaultRouteClass()
Get or set default route class.
public
static defaultRouteClass([string|null $routeClass = null ]) : string|null
Parameters
- $routeClass : string|null = null
-
Class name.
Return values
string|nullextensions()
Get or set valid extensions for all routes connected later.
public
static extensions([array<string|int, string>|string|null $extensions = null ][, bool $merge = true ]) : array<string|int, string>
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
- $extensions : array<string|int, string>|string|null = null
-
List of extensions to be added.
- $merge : bool = true
-
Whether to merge with or override existing extensions. Defaults to
true
.
Return values
array<string|int, string> —Array of extensions Router is configured to parse.
fullBaseUrl()
Sets the full base URL that will be used as a prefix for generating fully qualified URLs for this application. If no parameters are passed, the currently configured value is returned.
public
static fullBaseUrl([string|null $base = null ]) : string
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
- $base : string|null = null
-
the prefix for URLs generated containing the domain. For example:
http://example.com
Return values
stringgetNamedExpressions()
Gets the named route patterns for use in config/routes.php
public
static getNamedExpressions() : array<string, string>
Tags
Return values
array<string, string> —Named route elements
getRequest()
Get the current request object.
public
static getRequest() : ServerRequest|null
Return values
ServerRequest|nullgetRouteCollection()
Get the RouteCollection inside the Router
public
static getRouteCollection() : RouteCollection
Return values
RouteCollectionnormalize()
Normalizes a URL for purposes of comparison.
public
static normalize([array<string|int, mixed>|string $url = '/' ]) : string
Will strip the base path off and replace any double /'s. It will not unify the casing and underscoring of the input value.
Parameters
- $url : array<string|int, mixed>|string = '/'
-
URL to normalize Either an array or a string URL.
Return values
string —Normalized URL
parseRequest()
Get the routing parameters for the request if possible.
public
static parseRequest(ServerRequest $request) : array<string|int, mixed>
Parameters
- $request : ServerRequest
-
The request to parse request data from.
Tags
Return values
array<string|int, mixed> —Parsed elements from URL.
parseRoutePath()
Parse a string route path
public
static parseRoutePath(string $url) : array<string, string>
String examples:
- Bookmarks::view
- Admin/Bookmarks::view
- Cms.Articles::edit
- Vendor/Cms.Management/Admin/Articles::view
Parameters
- $url : string
-
Route path in [Plugin.][Prefix/]Controller::action format
Return values
array<string, string>pathUrl()
Generate URL for route path.
public
static pathUrl(string $path[, array<string|int, mixed> $params = [] ][, bool $full = false ]) : string
Route path examples:
- Bookmarks::view
- Admin/Bookmarks::view
- Cms.Articles::edit
- Vendor/Cms.Management/Admin/Articles::view
Parameters
- $path : string
-
Route path specifying controller and action, optionally with plugin and prefix.
- $params : array<string|int, mixed> = []
-
An array specifying any additional parameters. Can be also any special parameters supported by
Router::url()
. - $full : bool = false
-
If true, the full base URL will be prepended to the result. Default is false.
Return values
string —Full translated URL with base path.
plugin()
Add plugin routes.
public
static plugin(string $name[, callable|array<string|int, mixed> $options = [] ][, callable|null $callback = null ]) : void
Use the non-static method RouteBuilder::plugin()
instead.
This method creates a scoped route collection that includes relevant plugin information.
The plugin name will be inflected to the dasherized 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
- $name : string
-
The plugin name to build routes for
- $options : callable|array<string|int, mixed> = []
-
Either the options to use, or a callback
- $callback : callable|null = null
-
The callback to invoke that builds the plugin routes. Only required when $options is defined
prefix()
Create prefixed routes.
public
static prefix(string $name[, callable|array<string|int, mixed> $params = [] ][, callable|null $callback = null ]) : void
Use the non-static method RouteBuilder::prefix()
instead.
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 dasherized 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
- $name : string
-
The prefix name to use.
- $params : callable|array<string|int, mixed> = []
-
An array of routing defaults to add to each connected route. If you have no parameters, this argument can be a callable.
- $callback : callable|null = null
-
The callback to invoke that builds the prefixed routes.
reload()
Reloads default Router settings. Resets all class variables and removes all connected routes.
public
static reload() : void
reverse()
Reverses a parsed parameter array into a string.
public
static reverse(ServerRequest|array<string|int, mixed> $params[, bool $full = false ]) : string
Works similarly to Router::url(), but since parsed URL's contain additional keys like 'pass', '_matchedRoute' etc. those keys need to be specially handled in order to reverse a params array into a string URL.
Parameters
- $params : ServerRequest|array<string|int, mixed>
-
The params array or Cake\Http\ServerRequest object that needs to be reversed.
- $full : bool = false
-
Set to true to include the full URL including the protocol when reversing the URL.
Return values
string —The string that is the reversed result of the array
reverseToArray()
Reverses a parsed parameter array into an array.
public
static reverseToArray(ServerRequest|array<string|int, mixed> $params) : array<string|int, mixed>
Works similarly to Router::url(), but since parsed URL's contain additional keys like 'pass', '_matchedRoute' etc. those keys need to be specially handled in order to reverse a params array into a string URL.
Parameters
- $params : ServerRequest|array<string|int, mixed>
-
The params array or Cake\Http\ServerRequest object that needs to be reversed.
Return values
array<string|int, mixed> —The URL array ready to be used for redirect or HTML link.
routeExists()
Finds URL for specified action.
public
static routeExists([array<string|int, mixed>|string|null $url = null ][, bool $full = false ]) : bool
Returns a bool if the url exists
Usage
Parameters
- $url : array<string|int, mixed>|string|null = null
-
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.
- $full : bool = false
-
If true, the full base URL will be prepended to the result. Default is false.
Tags
Return values
boolroutes()
Get the route scopes and their connected routes.
public
static routes() : array<string|int, Route>
Return values
array<string|int, Route>scope()
Create a routing scope.
public
static scope(string $path[, callable|array<string|int, mixed> $params = [] ][, callable|null $callback = null ]) : void
Use the non-static method RouteBuilder::scope()
instead.
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
- $path : string
-
The path prefix for the scope. This path will be prepended to all routes connected in the scoped collection.
- $params : callable|array<string|int, mixed> = []
-
An array of routing defaults to add to each connected route. If you have no parameters, this argument can be a callable.
- $callback : callable|null = null
-
The callback to invoke with the scoped collection.
Tags
setRequest()
Set current request instance.
public
static setRequest(ServerRequest $request) : void
Parameters
- $request : ServerRequest
-
request object.
setRouteCollection()
Set the RouteCollection inside the Router
public
static setRouteCollection(RouteCollection $routeCollection) : void
Parameters
- $routeCollection : RouteCollection
-
route collection
url()
Finds URL for specified action.
public
static url([UriInterface|array<string|int, mixed>|string|null $url = null ][, bool $full = false ]) : string
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
- $url : UriInterface|array<string|int, mixed>|string|null = null
-
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 or it can be an UriInterface instance.
- $full : bool = false
-
If true, the full base URL will be prepended to the result. Default is false.
Tags
Return values
string —Full translated URL with base path.
_applyUrlFilters()
Applies all the connected URL filters to the URL.
protected
static _applyUrlFilters(array<string|int, mixed> $url) : array<string|int, mixed>
Parameters
- $url : array<string|int, mixed>
-
The URL array being modified.
Tags
Return values
array<string|int, mixed> —The modified URL.
unwrapShortString()
Inject route defaults from `_path` key
protected
static unwrapShortString(array<string|int, mixed> $url) : array<string|int, mixed>
Parameters
- $url : array<string|int, mixed>
-
Route array with
_path
key