User
extends Component
in package
User is the class for the `user` application component that manages the user authentication status.
You may use [[isGuest]] to determine whether the current user is a guest or not.
If the user is a guest, the [[identity]] property would return null
. Otherwise, it would
be an instance of [[IdentityInterface]].
You may call various methods to change the user authentication status:
- [[login()]]: sets the specified identity and remembers the authentication status in session and cookie;
- [[logout()]]: marks the user as a guest and clears the relevant information from session and cookie;
- [[setIdentity()]]: changes the user identity without touching session or cookie (this is best used in stateless RESTful API implementation).
Note that User only maintains the user authentication status. It does NOT handle how to authenticate a user. The logic of how to authenticate a user should be done in the class implementing [[IdentityInterface]]. You are also required to set [[identityClass]] with the name of this class.
User is configured as an application component in [[\yii\web\Application]] by default.
You can access that instance via Yii::$app->user
.
You can modify its configuration by adding an array to your application config under components
as it is shown in the following example:
'user' => [
'identityClass' => 'app\models\User', // User must implement the IdentityInterface
'enableAutoLogin' => true,
// 'loginUrl' => ['user/login'],
// ...
]
Tags
Table of Contents
Constants
- EVENT_AFTER_LOGIN = 'afterLogin'
- EVENT_AFTER_LOGOUT = 'afterLogout'
- EVENT_BEFORE_LOGIN = 'beforeLogin'
- EVENT_BEFORE_LOGOUT = 'beforeLogout'
Properties
- $absoluteAuthTimeout : int|null
- $absoluteAuthTimeoutParam : string
- $acceptableRedirectTypes : array<string|int, mixed>
- $accessChecker : CheckAccessInterface|string|array<string|int, mixed>|null
- $authKeyParam : string
- $authTimeout : int|null
- $authTimeoutParam : string
- $autoRenewCookie : bool
- $behaviors : array<string|int, Behavior>
- $enableAutoLogin : bool
- $enableSession : bool
- $id : string|int|null
- $identity : IdentityInterface|null
- $identityClass : string
- $identityCookie : array<string|int, mixed>
- $idParam : string
- $isGuest : bool
- $loginUrl : string|array<string|int, mixed>|null
- $returnUrl : string
- $returnUrlParam : string
- $_access : mixed
- $_behaviors : array<string|int, Behavior>|null
- $_events : array<string|int, mixed>
- $_eventWildcards : array<string|int, mixed>
- $_identity : mixed
Methods
- __call() : mixed
- Calls the named method which is not a class method.
- __clone() : mixed
- This method is called after the object is created by cloning an existing one.
- __construct() : mixed
- Constructor.
- __get() : mixed
- Returns the value of a component property.
- __isset() : bool
- Checks if a property is set, i.e. defined and not null.
- __set() : mixed
- Sets the value of a component property.
- __unset() : mixed
- Sets a component property to be null.
- attachBehavior() : Behavior
- Attaches a behavior to this component.
- attachBehaviors() : mixed
- Attaches a list of behaviors to the component.
- behaviors() : array<string|int, mixed>
- Returns a list of behaviors that this component should behave as.
- can() : bool
- Checks if the user can perform the operation as specified by the given permission.
- canGetProperty() : bool
- Returns a value indicating whether a property can be read.
- canSetProperty() : bool
- Returns a value indicating whether a property can be set.
- checkRedirectAcceptable() : bool
- Checks if the `Accept` header contains a content type that allows redirection to the login page.
- className() : string
- Returns the fully qualified name of this class.
- detachBehavior() : Behavior|null
- Detaches a behavior from the component.
- detachBehaviors() : mixed
- Detaches all behaviors from the component.
- ensureBehaviors() : mixed
- Makes sure that the behaviors declared in [[behaviors()]] are attached to this component.
- getBehavior() : Behavior|null
- Returns the named behavior object.
- getBehaviors() : array<string|int, Behavior>
- Returns all behaviors attached to this component.
- getId() : string|int|null
- Returns a value that uniquely represents the user.
- getIdentity() : IdentityInterface|null
- Returns the identity object associated with the currently logged-in user.
- getIsGuest() : bool
- Returns a value indicating whether the user is a guest (not authenticated).
- getReturnUrl() : string
- Returns the URL that the browser should be redirected to after successful login.
- hasEventHandlers() : bool
- Returns a value indicating whether there is any handler attached to the named event.
- hasMethod() : bool
- Returns a value indicating whether a method is defined.
- hasProperty() : bool
- Returns a value indicating whether a property is defined for this component.
- init() : mixed
- Initializes the application component.
- login() : bool
- Logs in a user.
- loginByAccessToken() : IdentityInterface|null
- Logs in a user by the given access token.
- loginRequired() : Response
- Redirects the user browser to the login page.
- logout() : bool
- Logs out the current user.
- off() : bool
- Detaches an existing event handler from this component.
- on() : mixed
- Attaches an event handler to an event.
- setIdentity() : mixed
- Sets the user identity object.
- setReturnUrl() : mixed
- Remembers the URL in the session so that it can be retrieved back later by [[getReturnUrl()]].
- switchIdentity() : mixed
- Switches to a new identity for the current user.
- trigger() : mixed
- Triggers an event.
- afterLogin() : mixed
- This method is called after the user is successfully logged in.
- afterLogout() : mixed
- This method is invoked right after a user is logged out via [[logout()]].
- beforeLogin() : bool
- This method is called before logging in a user.
- beforeLogout() : bool
- This method is invoked when calling [[logout()]] to log out a user.
- getAccessChecker() : CheckAccessInterface
- Returns the access checker used for checking access.
- getAuthManager() : ManagerInterface
- Returns auth manager associated with the user component.
- getIdentityAndDurationFromCookie() : array<string|int, mixed>|null
- Determines if an identity cookie has a valid format and contains a valid auth key.
- loginByCookie() : mixed
- Logs in a user by cookie.
- regenerateCsrfToken() : mixed
- Regenerates CSRF token
- removeIdentityCookie() : mixed
- Removes the identity cookie.
- renewAuthStatus() : mixed
- Updates the authentication status using the information from session and cookie.
- renewIdentityCookie() : mixed
- Renews the identity cookie.
- sendIdentityCookie() : mixed
- Sends an identity cookie.
- attachBehaviorInternal() : Behavior
- Attaches a behavior to this component.
Constants
EVENT_AFTER_LOGIN
public
mixed
EVENT_AFTER_LOGIN
= 'afterLogin'
EVENT_AFTER_LOGOUT
public
mixed
EVENT_AFTER_LOGOUT
= 'afterLogout'
EVENT_BEFORE_LOGIN
public
mixed
EVENT_BEFORE_LOGIN
= 'beforeLogin'
EVENT_BEFORE_LOGOUT
public
mixed
EVENT_BEFORE_LOGOUT
= 'beforeLogout'
Properties
$absoluteAuthTimeout
public
int|null
$absoluteAuthTimeout
the number of seconds in which the user will be logged out automatically
regardless of activity.
Note that this will not work if [[enableAutoLogin]] is true
.
$absoluteAuthTimeoutParam
public
string
$absoluteAuthTimeoutParam
= '__absoluteExpire'
the session variable name used to store the value of absolute expiration timestamp of the authenticated state. This is used when [[absoluteAuthTimeout]] is set.
$acceptableRedirectTypes
public
array<string|int, mixed>
$acceptableRedirectTypes
= ['text/html', 'application/xhtml+xml']
MIME types for which this component should redirect to the [[loginUrl]].
Tags
$accessChecker
public
CheckAccessInterface|string|array<string|int, mixed>|null
$accessChecker
The access checker object to use for checking access or the application component ID of the access checker. If not set the application auth manager will be used.
Tags
$authKeyParam
public
string
$authKeyParam
= '__authKey'
the session variable name used to store authentication key.
Tags
$authTimeout
public
int|null
$authTimeout
the number of seconds in which the user will be logged out automatically if the user
remains inactive. If this property is not set, the user will be logged out after
the current session expires (c.f. [[Session::timeout]]).
Note that this will not work if [[enableAutoLogin]] is true
.
$authTimeoutParam
public
string
$authTimeoutParam
= '__expire'
the session variable name used to store the value of expiration timestamp of the authenticated state. This is used when [[authTimeout]] is set.
$autoRenewCookie
public
bool
$autoRenewCookie
= true
whether to automatically renew the identity cookie each time a page is requested.
This property is effective only when [[enableAutoLogin]] is true
.
When this is false
, the identity cookie will expire after the specified duration since the user
is initially logged in. When this is true
, the identity cookie will expire after the specified duration
since the user visits the site the last time.
Tags
$behaviors read-only
public
array<string|int, Behavior>
$behaviors
List of behaviors attached to this component.
$enableAutoLogin
public
bool
$enableAutoLogin
= false
whether to enable cookie-based login. Defaults to false
.
Note that this property will be ignored if [[enableSession]] is false
.
$enableSession
public
bool
$enableSession
= true
whether to use session to persist authentication status across multiple requests.
You set this property to be false
if your application is stateless, which is often the case
for RESTful APIs.
$id read-only
public
string|int|null
$id
The unique identifier for the user. If null
, it means the user is a
guest.
$identity
public
IdentityInterface|null
$identity
The identity object associated with the currently logged-in
user. null
is returned if the user is not logged in (not authenticated).
$identityClass
public
string
$identityClass
the class name of the [[identity]] object.
$identityCookie
public
array<string|int, mixed>
$identityCookie
= ['name' => '_identity', 'httpOnly' => true]
the configuration of the identity cookie. This property is used only when [[enableAutoLogin]] is true
.
Tags
$idParam
public
string
$idParam
= '__id'
the session variable name used to store the value of [[id]].
$isGuest read-only
public
bool
$isGuest
Whether the current user is a guest.
$loginUrl
public
string|array<string|int, mixed>|null
$loginUrl
= ['site/login']
the URL for login when [[loginRequired()]] is called. If an array is given, [[UrlManager::createUrl()]] will be called to create the corresponding URL. The first element of the array should be the route to the login action, and the rest of the name-value pairs are GET parameters used to construct the login URL. For example,
['site/login', 'ref' => 1]
If this property is null
, a 403 HTTP exception will be raised when [[loginRequired()]] is called.
$returnUrl
public
string
$returnUrl
The URL that the user should be redirected to after login. Note that the type of this property differs in getter and setter. See [[getReturnUrl()]] and [[setReturnUrl()]] for details.
$returnUrlParam
public
string
$returnUrlParam
= '__returnUrl'
the session variable name used to store the value of [[returnUrl]].
$_access
private
mixed
$_access
= []
$_behaviors
private
array<string|int, Behavior>|null
$_behaviors
the attached behaviors (behavior name => behavior). This is null
when not initialized.
$_events
private
array<string|int, mixed>
$_events
= []
the attached event handlers (event name => handlers)
$_eventWildcards
private
array<string|int, mixed>
$_eventWildcards
= []
the event handlers attached for wildcard patterns (event name wildcard => handlers)
Tags
$_identity
private
mixed
$_identity
= false
Methods
__call()
Calls the named method which is not a class method.
public
__call(string $name, array<string|int, mixed> $params) : mixed
This method will check if any attached behavior has the named method and will execute it if available.
Do not call this method directly as it is a PHP magic method that will be implicitly called when an unknown method is being invoked.
Parameters
- $name : string
-
the method name
- $params : array<string|int, mixed>
-
method parameters
Tags
Return values
mixed —the method return value
__clone()
This method is called after the object is created by cloning an existing one.
public
__clone() : mixed
It removes all behaviors because they are attached to the old object.
__construct()
Constructor.
public
__construct([array<string|int, mixed> $config = [] ]) : mixed
The default implementation does two things:
- Initializes the object with the given configuration
$config
. - Call [[init()]].
If this method is overridden in a child class, it is recommended that
- the last parameter of the constructor is a configuration array, like
$config
here. - call the parent implementation at the end of the constructor.
Parameters
- $config : array<string|int, mixed> = []
-
name-value pairs that will be used to initialize the object properties
__get()
Returns the value of a component property.
public
__get(string $name) : mixed
This method will check in the following order and act accordingly:
- a property defined by a getter: return the getter result
- a property of a behavior: return the behavior property value
Do not call this method directly as it is a PHP magic method that
will be implicitly called when executing $value = $component->property;
.
Parameters
- $name : string
-
the property name
Tags
Return values
mixed —the property value or the value of a behavior's property
__isset()
Checks if a property is set, i.e. defined and not null.
public
__isset(string $name) : bool
This method will check in the following order and act accordingly:
- a property defined by a setter: return whether the property is set
- a property of a behavior: return whether the property is set
- return
false
for non existing properties
Do not call this method directly as it is a PHP magic method that
will be implicitly called when executing isset($component->property)
.
Parameters
- $name : string
-
the property name or the event name
Tags
Return values
bool —whether the named property is set
__set()
Sets the value of a component property.
public
__set(string $name, mixed $value) : mixed
This method will check in the following order and act accordingly:
- a property defined by a setter: set the property value
- an event in the format of "on xyz": attach the handler to the event "xyz"
- a behavior in the format of "as xyz": attach the behavior named as "xyz"
- a property of a behavior: set the behavior property value
Do not call this method directly as it is a PHP magic method that
will be implicitly called when executing $component->property = $value;
.
Parameters
- $name : string
-
the property name or the event name
- $value : mixed
-
the property value
Tags
__unset()
Sets a component property to be null.
public
__unset(string $name) : mixed
This method will check in the following order and act accordingly:
- a property defined by a setter: set the property value to be null
- a property of a behavior: set the property value to be null
Do not call this method directly as it is a PHP magic method that
will be implicitly called when executing unset($component->property)
.
Parameters
- $name : string
-
the property name
Tags
attachBehavior()
Attaches a behavior to this component.
public
attachBehavior(string $name, string|array<string|int, mixed>|Behavior $behavior) : Behavior
This method will create the behavior object based on the given configuration. After that, the behavior object will be attached to this component by calling the [[Behavior::attach()]] method.
Parameters
- $name : string
-
the name of the behavior.
- $behavior : string|array<string|int, mixed>|Behavior
-
the behavior configuration. This can be one of the following:
- a [[Behavior]] object
- a string specifying the behavior class
- an object configuration array that will be passed to [[Yii::createObject()]] to create the behavior object.
Tags
Return values
Behavior —the behavior object
attachBehaviors()
Attaches a list of behaviors to the component.
public
attachBehaviors(array<string|int, mixed> $behaviors) : mixed
Each behavior is indexed by its name and should be a [[Behavior]] object, a string specifying the behavior class, or an configuration array for creating the behavior.
Parameters
- $behaviors : array<string|int, mixed>
-
list of behaviors to be attached to the component
Tags
behaviors()
Returns a list of behaviors that this component should behave as.
public
behaviors() : array<string|int, mixed>
Child classes may override this method to specify the behaviors they want to behave as.
The return value of this method should be an array of behavior objects or configurations indexed by behavior names. A behavior configuration can be either a string specifying the behavior class or an array of the following structure:
'behaviorName' => [
'class' => 'BehaviorClass',
'property1' => 'value1',
'property2' => 'value2',
]
Note that a behavior class must extend from [[Behavior]]. Behaviors can be attached using a name or anonymously. When a name is used as the array key, using this name, the behavior can later be retrieved using [[getBehavior()]] or be detached using [[detachBehavior()]]. Anonymous behaviors can not be retrieved or detached.
Behaviors declared in this method will be attached to the component automatically (on demand).
Return values
array<string|int, mixed> —the behavior configurations.
can()
Checks if the user can perform the operation as specified by the given permission.
public
can(string $permissionName[, array<string|int, mixed> $params = [] ][, bool $allowCaching = true ]) : bool
Note that you must configure "authManager" application component in order to use this method. Otherwise it will always return false.
Parameters
- $permissionName : string
-
the name of the permission (e.g. "edit post") that needs access check.
- $params : array<string|int, mixed> = []
-
name-value pairs that would be passed to the rules associated with the roles and permissions assigned to the user.
- $allowCaching : bool = true
-
whether to allow caching the result of access check. When this parameter is true (default), if the access check of an operation was performed before, its result will be directly returned when calling this method to check the same operation. If this parameter is false, this method will always call [[\yii\rbac\CheckAccessInterface::checkAccess()]] to obtain the up-to-date access result. Note that this caching is effective only within the same request and only works when
$params = []
.
Return values
bool —whether the user can perform the operation as specified by the given permission.
canGetProperty()
Returns a value indicating whether a property can be read.
public
canGetProperty(string $name[, bool $checkVars = true ][, bool $checkBehaviors = true ]) : bool
A property can be read if:
- the class has a getter method associated with the specified name (in this case, property name is case-insensitive);
- the class has a member variable with the specified name (when
$checkVars
is true); - an attached behavior has a readable property of the given name (when
$checkBehaviors
is true).
Parameters
- $name : string
-
the property name
- $checkVars : bool = true
-
whether to treat member variables as properties
- $checkBehaviors : bool = true
-
whether to treat behaviors' properties as properties of this component
Tags
Return values
bool —whether the property can be read
canSetProperty()
Returns a value indicating whether a property can be set.
public
canSetProperty(string $name[, bool $checkVars = true ][, bool $checkBehaviors = true ]) : bool
A property can be written if:
- the class has a setter method associated with the specified name (in this case, property name is case-insensitive);
- the class has a member variable with the specified name (when
$checkVars
is true); - an attached behavior has a writable property of the given name (when
$checkBehaviors
is true).
Parameters
- $name : string
-
the property name
- $checkVars : bool = true
-
whether to treat member variables as properties
- $checkBehaviors : bool = true
-
whether to treat behaviors' properties as properties of this component
Tags
Return values
bool —whether the property can be written
checkRedirectAcceptable()
Checks if the `Accept` header contains a content type that allows redirection to the login page.
public
checkRedirectAcceptable() : bool
The login page is assumed to serve text/html
or application/xhtml+xml
by default. You can change acceptable
content types by modifying [[acceptableRedirectTypes]] property.
Tags
Return values
bool —whether this request may be redirected to the login page.
className()
Returns the fully qualified name of this class.
public
static className() : string
Tags
Return values
string —the fully qualified name of this class.
detachBehavior()
Detaches a behavior from the component.
public
detachBehavior(string $name) : Behavior|null
The behavior's [[Behavior::detach()]] method will be invoked.
Parameters
- $name : string
-
the behavior's name.
Return values
Behavior|null —the detached behavior. Null if the behavior does not exist.
detachBehaviors()
Detaches all behaviors from the component.
public
detachBehaviors() : mixed
ensureBehaviors()
Makes sure that the behaviors declared in [[behaviors()]] are attached to this component.
public
ensureBehaviors() : mixed
getBehavior()
Returns the named behavior object.
public
getBehavior(string $name) : Behavior|null
Parameters
- $name : string
-
the behavior name
Return values
Behavior|null —the behavior object, or null if the behavior does not exist
getBehaviors()
Returns all behaviors attached to this component.
public
getBehaviors() : array<string|int, Behavior>
Return values
array<string|int, Behavior> —list of behaviors attached to this component
getId()
Returns a value that uniquely represents the user.
public
getId() : string|int|null
Tags
Return values
string|int|null —the unique identifier for the user. If null
, it means the user is a guest.
getIdentity()
Returns the identity object associated with the currently logged-in user.
public
getIdentity([bool $autoRenew = true ]) : IdentityInterface|null
When [[enableSession]] is true, this method may attempt to read the user's authentication data stored in session and reconstruct the corresponding identity object, if it has not done so before.
Parameters
- $autoRenew : bool = true
-
whether to automatically renew authentication status if it has not been done so before. This is only useful when [[enableSession]] is true.
Tags
Return values
IdentityInterface|null —the identity object associated with the currently logged-in user.
null
is returned if the user is not logged in (not authenticated).
getIsGuest()
Returns a value indicating whether the user is a guest (not authenticated).
public
getIsGuest() : bool
Tags
Return values
bool —whether the current user is a guest.
getReturnUrl()
Returns the URL that the browser should be redirected to after successful login.
public
getReturnUrl([string|array<string|int, mixed>|null $defaultUrl = null ]) : string
This method reads the return URL from the session. It is usually used by the login action which may call this method to redirect the browser to where it goes after successful authentication.
Parameters
- $defaultUrl : string|array<string|int, mixed>|null = null
-
the default return URL in case it was not set previously. If this is null and the return URL was not set previously, [[Application::homeUrl]] will be redirected to. Please refer to [[setReturnUrl()]] on accepted format of the URL.
Tags
Return values
string —the URL that the user should be redirected to after login.
hasEventHandlers()
Returns a value indicating whether there is any handler attached to the named event.
public
hasEventHandlers(string $name) : bool
Parameters
- $name : string
-
the event name
Return values
bool —whether there is any handler attached to the event.
hasMethod()
Returns a value indicating whether a method is defined.
public
hasMethod(string $name[, bool $checkBehaviors = true ]) : bool
A method is defined if:
- the class has a method with the specified name
- an attached behavior has a method with the given name (when
$checkBehaviors
is true).
Parameters
- $name : string
-
the property name
- $checkBehaviors : bool = true
-
whether to treat behaviors' methods as methods of this component
Return values
bool —whether the method is defined
hasProperty()
Returns a value indicating whether a property is defined for this component.
public
hasProperty(string $name[, bool $checkVars = true ][, bool $checkBehaviors = true ]) : bool
A property is defined if:
- the class has a getter or setter method associated with the specified name (in this case, property name is case-insensitive);
- the class has a member variable with the specified name (when
$checkVars
is true); - an attached behavior has a property of the given name (when
$checkBehaviors
is true).
Parameters
- $name : string
-
the property name
- $checkVars : bool = true
-
whether to treat member variables as properties
- $checkBehaviors : bool = true
-
whether to treat behaviors' properties as properties of this component
Tags
Return values
bool —whether the property is defined
init()
Initializes the application component.
public
init() : mixed
login()
Logs in a user.
public
login(IdentityInterface $identity[, int $duration = 0 ]) : bool
After logging in a user:
- the user's identity information is obtainable from the [[identity]] property
If [[enableSession]] is true
:
- the identity information will be stored in session and be available in the next requests
- in case of
$duration == 0
: as long as the session remains active or till the user closes the browser - in case of
$duration > 0
: as long as the session remains active or as long as the cookie remains valid by it's$duration
in seconds when [[enableAutoLogin]] is settrue
.
If [[enableSession]] is false
:
- the
$duration
parameter will be ignored
Parameters
- $identity : IdentityInterface
-
the user identity (which should already be authenticated)
- $duration : int = 0
-
number of seconds that the user can remain in logged-in status, defaults to
0
Return values
bool —whether the user is logged in
loginByAccessToken()
Logs in a user by the given access token.
public
loginByAccessToken(string $token[, mixed $type = null ]) : IdentityInterface|null
This method will first authenticate the user by calling [[IdentityInterface::findIdentityByAccessToken()]] with the provided access token. If successful, it will call [[login()]] to log in the authenticated user. If authentication fails or [[login()]] is unsuccessful, it will return null.
Parameters
- $token : string
-
the access token
- $type : mixed = null
-
the type of the token. The value of this parameter depends on the implementation. For example, [[\yii\filters\auth\HttpBearerAuth]] will set this parameter to be
yii\filters\auth\HttpBearerAuth
.
Return values
IdentityInterface|null —the identity associated with the given access token. Null is returned if the access token is invalid or [[login()]] is unsuccessful.
loginRequired()
Redirects the user browser to the login page.
public
loginRequired([bool $checkAjax = true ][, bool $checkAcceptHeader = true ]) : Response
Before the redirection, the current URL (if it's not an AJAX url) will be kept as [[returnUrl]] so that the user browser may be redirected back to the current page after successful login.
Make sure you set [[loginUrl]] so that the user browser can be redirected to the specified login URL after calling this method.
Note that when [[loginUrl]] is set, calling this method will NOT terminate the application execution.
Parameters
- $checkAjax : bool = true
-
whether to check if the request is an AJAX request. When this is true and the request is an AJAX request, the current URL (for AJAX request) will NOT be set as the return URL.
- $checkAcceptHeader : bool = true
-
whether to check if the request accepts HTML responses. Defaults to
true
. When this is true and the request does not accept HTML responses the current URL will not be SET as the return URL. Also instead of redirecting the user an ForbiddenHttpException is thrown. This parameter is available since version 2.0.8.
Tags
Return values
Response —the redirection response if [[loginUrl]] is set
logout()
Logs out the current user.
public
logout([bool $destroySession = true ]) : bool
This will remove authentication-related session data.
If $destroySession
is true, all session data will be removed.
Parameters
- $destroySession : bool = true
-
whether to destroy the whole session. Defaults to true. This parameter is ignored if [[enableSession]] is false.
Return values
bool —whether the user is logged out
off()
Detaches an existing event handler from this component.
public
off(string $name[, callable|null $handler = null ]) : bool
This method is the opposite of [[on()]].
Note: in case wildcard pattern is passed for event name, only the handlers registered with this wildcard will be removed, while handlers registered with plain names matching this wildcard will remain.
Parameters
- $name : string
-
event name
- $handler : callable|null = null
-
the event handler to be removed. If it is null, all handlers attached to the named event will be removed.
Tags
Return values
bool —if a handler is found and detached
on()
Attaches an event handler to an event.
public
on(string $name, callable $handler[, mixed $data = null ][, bool $append = true ]) : mixed
The event handler must be a valid PHP callback. The following are some examples:
function ($event) { ... } // anonymous function
[$object, 'handleClick'] // $object->handleClick()
['Page', 'handleClick'] // Page::handleClick()
'handleClick' // global function handleClick()
The event handler must be defined with the following signature,
function ($event)
where $event
is an [[Event]] object which includes parameters associated with the event.
Since 2.0.14 you can specify event name as a wildcard pattern:
$component->on('event.group.*', function ($event) {
Yii::trace($event->name . ' is triggered.');
});
Parameters
- $name : string
-
the event name
- $handler : callable
-
the event handler
- $data : mixed = null
-
the data to be passed to the event handler when the event is triggered. When the event handler is invoked, this data can be accessed via [[Event::data]].
- $append : bool = true
-
whether to append new event handler to the end of the existing handler list. If false, the new handler will be inserted at the beginning of the existing handler list.
Tags
setIdentity()
Sets the user identity object.
public
setIdentity(IdentityInterface|null $identity) : mixed
Note that this method does not deal with session or cookie. You should usually use [[switchIdentity()]] to change the identity of the current user.
Parameters
- $identity : IdentityInterface|null
-
the identity object associated with the currently logged user. If null, it means the current user will be a guest without any associated identity.
Tags
setReturnUrl()
Remembers the URL in the session so that it can be retrieved back later by [[getReturnUrl()]].
public
setReturnUrl(string|array<string|int, mixed> $url) : mixed
Parameters
- $url : string|array<string|int, mixed>
-
the URL that the user should be redirected to after login. If an array is given, [[UrlManager::createUrl()]] will be called to create the corresponding URL. The first element of the array should be the route, and the rest of the name-value pairs are GET parameters used to construct the URL. For example,
['admin/index', 'ref' => 1]
switchIdentity()
Switches to a new identity for the current user.
public
switchIdentity(IdentityInterface|null $identity[, int $duration = 0 ]) : mixed
When [[enableSession]] is true, this method may use session and/or cookie to store the user identity information,
according to the value of $duration
. Please refer to [[login()]] for more details.
This method is mainly called by [[login()]], [[logout()]] and [[loginByCookie()]] when the current user needs to be associated with the corresponding identity information.
Parameters
- $identity : IdentityInterface|null
-
the identity information to be associated with the current user. If null, it means switching the current user to be a guest.
- $duration : int = 0
-
number of seconds that the user can remain in logged-in status. This parameter is used only when
$identity
is not null.
trigger()
Triggers an event.
public
trigger(string $name[, Event|null $event = null ]) : mixed
This method represents the happening of an event. It invokes all attached handlers for the event including class-level handlers.
Parameters
- $name : string
-
the event name
- $event : Event|null = null
-
the event instance. If not set, a default [[Event]] object will be created.
afterLogin()
This method is called after the user is successfully logged in.
protected
afterLogin(IdentityInterface $identity, bool $cookieBased, int $duration) : mixed
The default implementation will trigger the [[EVENT_AFTER_LOGIN]] event. If you override this method, make sure you call the parent implementation so that the event is triggered.
Parameters
- $identity : IdentityInterface
-
the user identity information
- $cookieBased : bool
-
whether the login is cookie-based
- $duration : int
-
number of seconds that the user can remain in logged-in status. If 0, it means login till the user closes the browser or the session is manually destroyed.
afterLogout()
This method is invoked right after a user is logged out via [[logout()]].
protected
afterLogout(IdentityInterface $identity) : mixed
The default implementation will trigger the [[EVENT_AFTER_LOGOUT]] event. If you override this method, make sure you call the parent implementation so that the event is triggered.
Parameters
- $identity : IdentityInterface
-
the user identity information
beforeLogin()
This method is called before logging in a user.
protected
beforeLogin(IdentityInterface $identity, bool $cookieBased, int $duration) : bool
The default implementation will trigger the [[EVENT_BEFORE_LOGIN]] event. If you override this method, make sure you call the parent implementation so that the event is triggered.
Parameters
- $identity : IdentityInterface
-
the user identity information
- $cookieBased : bool
-
whether the login is cookie-based
- $duration : int
-
number of seconds that the user can remain in logged-in status. If 0, it means login till the user closes the browser or the session is manually destroyed.
Return values
bool —whether the user should continue to be logged in
beforeLogout()
This method is invoked when calling [[logout()]] to log out a user.
protected
beforeLogout(IdentityInterface $identity) : bool
The default implementation will trigger the [[EVENT_BEFORE_LOGOUT]] event. If you override this method, make sure you call the parent implementation so that the event is triggered.
Parameters
- $identity : IdentityInterface
-
the user identity information
Return values
bool —whether the user should continue to be logged out
getAccessChecker()
Returns the access checker used for checking access.
protected
getAccessChecker() : CheckAccessInterface
Tags
Return values
CheckAccessInterfacegetAuthManager()
Returns auth manager associated with the user component.
protected
getAuthManager() : ManagerInterface
By default this is the authManager
application component.
You may override this method to return a different auth manager instance if needed.
Tags
Return values
ManagerInterfacegetIdentityAndDurationFromCookie()
Determines if an identity cookie has a valid format and contains a valid auth key.
protected
getIdentityAndDurationFromCookie() : array<string|int, mixed>|null
This method is used when [[enableAutoLogin]] is true. This method attempts to authenticate a user using the information in the identity cookie.
Tags
Return values
array<string|int, mixed>|null —Returns an array of 'identity' and 'duration' if valid, otherwise null.
loginByCookie()
Logs in a user by cookie.
protected
loginByCookie() : mixed
This method attempts to log in a user using the ID and authKey information provided by the [[identityCookie|identity cookie]].
regenerateCsrfToken()
Regenerates CSRF token
protected
regenerateCsrfToken() : mixed
Tags
removeIdentityCookie()
Removes the identity cookie.
protected
removeIdentityCookie() : mixed
This method is used when [[enableAutoLogin]] is true.
Tags
renewAuthStatus()
Updates the authentication status using the information from session and cookie.
protected
renewAuthStatus() : mixed
This method will try to determine the user identity using the [[idParam]] session variable.
If [[authTimeout]] is set, this method will refresh the timer.
If the user identity cannot be determined by session, this method will try to [[loginByCookie()|login by cookie]] if [[enableAutoLogin]] is true.
renewIdentityCookie()
Renews the identity cookie.
protected
renewIdentityCookie() : mixed
This method will set the expiration time of the identity cookie to be the current time plus the originally specified cookie duration.
sendIdentityCookie()
Sends an identity cookie.
protected
sendIdentityCookie(IdentityInterface $identity, int $duration) : mixed
This method is used when [[enableAutoLogin]] is true. It saves [[id]], [[IdentityInterface::getAuthKey()|auth key]], and the duration of cookie-based login information in the cookie.
Parameters
- $identity : IdentityInterface
- $duration : int
-
number of seconds that the user can remain in logged-in status.
Tags
attachBehaviorInternal()
Attaches a behavior to this component.
private
attachBehaviorInternal(string|int $name, string|array<string|int, mixed>|Behavior $behavior) : Behavior
Parameters
- $name : string|int
-
the name of the behavior. If this is an integer, it means the behavior is an anonymous one. Otherwise, the behavior is a named one and any existing behavior with the same name will be detached first.
- $behavior : string|array<string|int, mixed>|Behavior
-
the behavior to be attached
Return values
Behavior —the attached behavior.