Ember.Route Class
The Ember.Route
class is used to define individual routes. Refer to
the routing guide for documentation.
Item Index
Methods
- _scheduledDestroy
- activate
- addObserver
- afterModel
- beforeModel
- beginPropertyChanges
- cacheFor
- contextDidChange
- controllerFor
- deactivate
- decrementProperty
- deserialize
- destroy
- disconnectOutlet
- eachComputedProperty
- endPropertyChanges
- enter
- events deprecated
- exit
- findModel
- generateController
- get
- getProperties
- getWithDefault
- hasObserverFor
- incrementProperty
- init
- intermediateTransitionTo
- metaForProperty
- model
- modelFor
- notifyPropertyChange
- propertyDidChange
- propertyWillChange
- redirect
- refresh
- removeObserver
- render
- renderTemplate
- reopen
- reopenClass
- replaceWith
- send
- serialize
- set
- setProperties
- setup
- setupController
- store
- teardownViews
- toggleProperty
- toString
- transitionTo
- willDestroy
- willMergeMixin
Properties
Events
Methods
_scheduledDestroy
()
private
destroy
method.
activate
()
This hook is executed when the router enters the route. It is not executed when the model for the route changes.
addObserver
-
key
-
target
-
method
context
parameter:
`
javascript
fooDidChange: function(sender, key, value, rev) { };
`
The sender is the object that changed. The key is the property that
changes. The value property is currently reserved and unused. The rev
is the last property revision of the object when it changed, which you can
use to detect if the key value has really changed or not.
If you pass a context
parameter, the context will be passed before the
revision like so:
`
javascript
fooDidChange: function(sender, key, value, context, rev) { };
`
Usually you will not need the value, context or revision parameters at
the end. In this case, it is common to write observer methods that take
only a sender and key value as parameters or, if you aren't interested in
any of these values, to write an observer that has no parameters at all.
afterModel
-
resolvedModel
-
transition
-
queryParams
This hook is called after this route's model has resolved.
It follows identical async/promise semantics to beforeModel
but is provided the route's resolved model in addition to
the transition
, and is therefore suited to performing
logic that can only take place after the model has already
resolved.
App.PostsRoute = Ember.Route.extend({
afterModel: function(posts, transition) {
if (posts.get('length') === 1) {
this.transitionTo('post.show', posts.get('firstObject'));
}
}
});
Refer to documentation for beforeModel
for a description
of transition-pausing semantics when a promise is returned
from this hook.
Parameters:
-
resolvedModel
Objectthe value returned from
model
, or its resolved value if it was a promise -
transition
Transition -
queryParams
Objectthe active query params for this handler
Returns:
if the value returned from this hook is a promise, the transition will pause until the transition resolves. Otherwise, non-promise return values are not utilized in any way.
beforeModel
-
transition
-
queryParams
This hook is the first of the route entry validation hooks
called when an attempt is made to transition into a route
or one of its children. It is called before model
and
afterModel
, and is appropriate for cases when:
- A decision can be made to redirect elsewhere without needing to resolve the model first.
- Any async operations need to occur first before the model is attempted to be resolved.
This hook is provided the current transition
attempt
as a parameter, which can be used to .abort()
the transition,
save it for a later .retry()
, or retrieve values set
on it from a previous hook. You can also just call
this.transitionTo
to another route to implicitly
abort the transition
.
You can return a promise from this hook to pause the transition until the promise resolves (or rejects). This could be useful, for instance, for retrieving async code from the server that is required to enter a route.
App.PostRoute = Ember.Route.extend({
beforeModel: function(transition) {
if (!App.Post) {
return Ember.$.getScript('/models/post.js');
}
}
});
If App.Post
doesn't exist in the above example,
beforeModel
will use jQuery's getScript
, which
returns a promise that resolves after the server has
successfully retrieved and executed the code from the
server. Note that if an error were to occur, it would
be passed to the error
hook on Ember.Route
, but
it's also possible to handle errors specific to
beforeModel
right from within the hook (to distinguish
from the shared error handling behavior of the error
hook):
App.PostRoute = Ember.Route.extend({
beforeModel: function(transition) {
if (!App.Post) {
var self = this;
return Ember.$.getScript('post.js').then(null, function(e) {
self.transitionTo('help');
// Note that the above transitionTo will implicitly
// halt the transition. If you were to return
// nothing from this promise reject handler,
// according to promise semantics, that would
// convert the reject into a resolve and the
// transition would continue. To propagate the
// error so that it'd be handled by the error
// hook, you would have to either
return Ember.RSVP.reject(e);
});
}
}
});
Parameters:
-
transition
Transition -
queryParams
Objectthe active query params for this route
Returns:
if the value returned from this hook is a promise, the transition will pause until the transition resolves. Otherwise, non-promise return values are not utilized in any way.
beginPropertyChanges
()
Ember.Observable
endPropertyChanges()
to deliver the deferred change notifications and end
deferring.
Returns:
cacheFor
-
keyName
Parameters:
-
keyName
String
Returns:
contextDidChange
()
private
Called when the context is changed by router.js.
controllerFor
-
name
Returns the controller for a particular route or name.
The controller instance must already have been created, either through entering the
associated route or using generateController
.
App.PostRoute = Ember.Route.extend({
setupController: function(controller, post) {
this._super(controller, post);
this.controllerFor('posts').set('currentPost', post);
}
});
Parameters:
-
name
Stringthe name of the route or controller
Returns:
deactivate
()
This hook is executed when the router completely exits this route. It is not executed when the model for the route changes.
decrementProperty
-
keyName
-
decrement
`
javascript
player.decrementProperty('lives');
orc.decrementProperty('health', 5);
`
Parameters:
-
keyName
StringThe name of the property to decrement -
decrement
NumberThe amount to decrement by. Defaults to 1
Returns:
deserialize
-
params
-
transition
Parameters:
-
params
Objectthe parameters extracted from the URL
-
transition
Transition
Returns:
the model for this route.
Router.js hook.
destroy
()
Ember.Object
isDestroyed
flag and removing its
metadata, which effectively destroys observers and bindings.
If you try to set a property on a destroyed object, an exception will be
raised.
Note that destruction is scheduled for the end of the run loop and does not
happen immediately. It will set an isDestroying flag immediately.
Returns:
receiver
disconnectOutlet
-
options
Disconnects a view that has been rendered into an outlet.
You may pass any or all of the following options to disconnectOutlet
:
outlet
: the name of the outlet to clear (default: 'main')parentView
: the name of the view containing the outlet to clear (default: the view rendered by the parent route)
Example:
App.ApplicationRoute = App.Route.extend({
actions: {
showModal: function(evt) {
this.render(evt.modalName, {
outlet: 'modal',
into: 'application'
});
},
hideModal: function(evt) {
this.disconnectOutlet({
outlet: 'modal',
parentView: 'application'
});
}
}
});
Alternatively, you can pass the outlet
name directly as a string.
Example:
hideModal: function(evt) {
this.disconnectOutlet('modal');
}
Parameters:
-
options
Object | Stringthe options hash or outlet name
eachComputedProperty
-
callback
-
binding
metaForProperty
) to the callback.
Parameters:
-
callback
Function -
binding
Object
endPropertyChanges
()
Ember.Observable
beginPropertyChanges()
at the beginning of the changes to defer change
notifications. When you are done making changes, call this method to
deliver the deferred change notifications and end deferring.
Returns:
enter
()
private
events
()
deprecated
exit
()
private
findModel
-
type
-
value
Parameters:
-
type
Stringthe model type
-
value
Objectthe value passed to find
generateController
-
name
-
model
Generates a controller for a route.
If the optional model is passed then the controller type is determined automatically, e.g., an ArrayController for arrays.
Example
App.PostRoute = Ember.Route.extend({
setupController: function(controller, post) {
this._super(controller, post);
this.generateController('posts', post);
}
});
Parameters:
-
name
Stringthe name of the controller
-
model
Objectthe model to infer the type of the controller (optional)
get
-
keyName
object[keyName]
or object.keyName
,
however it supports both computed properties and the unknownProperty
handler.
Because get
unifies the syntax for accessing all these kinds
of properties, it can make many refactorings easier, such as replacing a
simple property with a computed property, or vice versa.
### Computed Properties
Computed properties are methods defined with the property
modifier
declared at the end, such as:
`
javascript
fullName: function() {
return this.get('firstName') + ' ' + this.get('lastName');
}.property('firstName', 'lastName')
`
When you call get
on a computed property, the function will be
called and the return value will be returned instead of the function
itself.
### Unknown Properties
Likewise, if you try to call get
on a property whose value is
undefined
, the unknownProperty()
method will be called on the object.
If this method returns any value other than undefined
, it will be returned
instead. This allows you to implement "virtual" properties that are
not defined upfront.
Parameters:
-
keyName
StringThe property to retrieve
Returns:
getProperties
-
list
getProperties
with a list of strings or an array:
`
javascript
record.getProperties('firstName', 'lastName', 'zipCode'); // { firstName: 'John', lastName: 'Doe', zipCode: '10011' }
`
is equivalent to:
`
javascript
record.getProperties(['firstName', 'lastName', 'zipCode']); // { firstName: 'John', lastName: 'Doe', zipCode: '10011' }
`
Parameters:
-
list
String... | Arrayof keys to get
Returns:
getWithDefault
-
keyName
-
defaultValue
undefined
.
`
javascript
person.getWithDefault('lastName', 'Doe');
`
Parameters:
-
keyName
StringThe name of the property to retrieve -
defaultValue
ObjectThe value to return if the property value is undefined
Returns:
hasObserverFor
-
key
true
if the object currently has observers registered for a
particular key. You can use this method to potentially defer performing
an expensive action until someone begins observing a particular property
on the object.
Parameters:
-
key
StringKey to check
Returns:
incrementProperty
-
keyName
-
increment
`
javascript
person.incrementProperty('age');
team.incrementProperty('score', 2);
`
Parameters:
-
keyName
StringThe name of the property to increment -
increment
NumberThe amount to increment by. Defaults to 1
Returns:
init
()
`
javascript
App.Person = Ember.Object.extend({
init: function() {
alert('Name is ' + this.get('name'));
}
});
var steve = App.Person.create({
name: "Steve"
});
// alerts 'Name is Steve'.
`
NOTE: If you do override init
for a framework class like Ember.View
or
Ember.ArrayController
, be sure to call this._super()
in your
init
declaration! If you don't, Ember may not have an opportunity to
do important setup work, and you'll see strange behavior in your
application.
intermediateTransitionTo
-
name
-
models
Perform a synchronous transition into another route without attempting
to resolve promises, update the URL, or abort any currently active
asynchronous transitions (i.e. regular transitions caused by
transitionTo
or URL changes).
This method is handy for performing intermediate transitions on the
way to a final destination route, and is called internally by the
default implementations of the error
and loading
handlers.
Parameters:
-
name
Stringthe name of the route
-
models
...Objectthe model(s) to be used while transitioning to the route.
metaForProperty
-
key
`
javascript
person: function() {
var personId = this.get('personId');
return App.Person.create({ id: personId });
}.property().meta({ type: App.Person })
`
Once you've done this, you can retrieve the values saved to the computed
property from your class like this:
`
javascript
MyClass.metaForProperty('person');
`
This will return the original hash that was passed to meta()
.
Parameters:
-
key
Stringproperty name
model
-
params
-
transition
-
queryParams
A hook you can implement to convert the URL into the model for this route.
App.Router.map(function() {
this.resource('post', {path: '/posts/:post_id'});
});
The model for the post
route is App.Post.find(params.post_id)
.
By default, if your route has a dynamic segment ending in _id
:
- The model class is determined from the segment (
post_id
's class isApp.Post
) - The find method is called on the model class with the value of the dynamic segment.
Note that for routes with dynamic segments, this hook is only
executed when entered via the URL. If the route is entered
through a transition (e.g. when using the link-to
Handlebars
helper), then a model context is already provided and this hook
is not called. Routes without dynamic segments will always
execute the model hook.
This hook follows the asynchronous/promise semantics
described in the documentation for beforeModel
. In particular,
if a promise returned from model
fails, the error will be
handled by the error
hook on Ember.Route
.
Example
App.PostRoute = Ember.Route.extend({
model: function(params) {
return App.Post.find(params.post_id);
}
});
Parameters:
-
params
Objectthe parameters extracted from the URL
-
transition
Transition -
queryParams
Objectthe query params for this route
Returns:
the model for this route. If a promise is returned, the transition will pause until the promise resolves, and the resolved value of the promise will be used as the model for this route.
modelFor
-
name
Returns the model of a parent (or any ancestor) route
in a route hierarchy. During a transition, all routes
must resolve a model object, and if a route
needs access to a parent route's model in order to
resolve a model (or just reuse the model from a parent),
it can call this.modelFor(theNameOfParentRoute)
to
retrieve it.
Example
App.Router.map(function() {
this.resource('post', { path: '/post/:post_id' }, function() {
this.resource('comments');
});
});
App.CommentsRoute = Ember.Route.extend({
afterModel: function() {
this.set('post', this.modelFor('post'));
}
});
Parameters:
-
name
Stringthe name of the route
Returns:
the model object
notifyPropertyChange
-
keyName
propertyWillChange
and propertyDidChange
in
succession.
Parameters:
-
keyName
StringThe property key to be notified about.
Returns:
propertyDidChange
-
keyName
get()
or set()
on it. In this case, you can use this
method and propertyWillChange()
instead. Calling these two methods
together will notify all observers that the property has potentially
changed value.
Note that you must always call propertyWillChange
and propertyDidChange
as a pair. If you do not, it may get the property change groups out of
order and cause notifications to be delivered more often than you would
like.
Parameters:
-
keyName
StringThe property key that has just changed.
Returns:
propertyWillChange
-
keyName
get()
or set()
on it. In this case, you can use this
method and propertyDidChange()
instead. Calling these two methods
together will notify all observers that the property has potentially
changed value.
Note that you must always call propertyWillChange
and propertyDidChange
as a pair. If you do not, it may get the property change groups out of
order and cause notifications to be delivered more often than you would
like.
Parameters:
-
keyName
StringThe property key that is about to change.
Returns:
redirect
-
model
A hook you can implement to optionally redirect to another route.
If you call this.transitionTo
from inside of this hook, this route
will not be entered in favor of the other hook.
redirect
and afterModel
behave very similarly and are
called almost at the same time, but they have an important
distinction in the case that, from one of these hooks, a
redirect into a child route of this route occurs: redirects
from afterModel
essentially invalidate the current attempt
to enter this route, and will result in this route's beforeModel
,
model
, and afterModel
hooks being fired again within
the new, redirecting transition. Redirects that occur within
the redirect
hook, on the other hand, will not cause
these hooks to be fired again the second time around; in
other words, by the time the redirect
hook has been called,
both the resolved model and attempted entry into this route
are considered to be fully validated.
Parameters:
-
model
Objectthe model for this route
refresh
()
Transition
Refresh the model on this route and any child routes, firing the
beforeModel
, model
, and afterModel
hooks in a similar fashion
to how routes are entered when transitioning in from other route.
The current route params (e.g. article_id
) will be passed in
to the respective model hooks, and if a different model is returned,
setupController
and associated route hooks will re-fire as well.
An example usage of this method is re-querying the server for the latest information using the same parameters as when the route was first entered.
Note that this will cause model
hooks to fire even on routes
that were provided a model object when the route was initially
entered.
Returns:
the transition object associated with this attempted transition
removeObserver
-
key
-
target
-
method
addObserver()
and your
target will no longer receive notifications.
render
-
name
-
options
Renders a template into an outlet.
This method has a number of defaults, based on the name of the route specified in the router.
For example:
App.Router.map(function() {
this.route('index');
this.resource('post', {path: '/posts/:post_id'});
});
App.PostRoute = App.Route.extend({
renderTemplate: function() {
this.render();
}
});
The name of the PostRoute
, as defined by the router, is post
.
By default, render will:
- render the
post
template - with the
post
view (PostView
) for event handling, if one exists - and the
post
controller (PostController
), if one exists - into the
main
outlet of theapplication
template
You can override this behavior:
App.PostRoute = App.Route.extend({
renderTemplate: function() {
this.render('myPost', { // the template to render
into: 'index', // the template to render into
outlet: 'detail', // the name of the outlet in that template
controller: 'blogPost' // the controller to use for the template
});
}
});
Remember that the controller's content
will be the route's model. In
this case, the default model will be App.Post.find(params.post_id)
.
Parameters:
-
name
Stringthe name of the template to render
-
options
Objectthe options
renderTemplate
-
controller
-
model
A hook you can use to render the template for the current route.
This method is called with the controller for the current route and the
model supplied by the model
hook. By default, it renders the route's
template, configured with the controller for the route.
This method can be overridden to set up and render additional or alternative templates.
App.PostsRoute = Ember.Route.extend({
renderTemplate: function(controller, model) {
var favController = this.controllerFor('favoritePost');
// Render the favoritePost
template into
// the outlet posts
, and display the favoritePost
// controller.
this.render('favoritePost', {
outlet: 'posts',
controller: favController
});
}
});
Parameters:
-
controller
Objectthe route's controller
-
model
Objectthe route's model
reopen
()
`
javascript
MyObject = Ember.Object.extend({
name: 'an object'
});
o = MyObject.create();
o.get('name'); // 'an object'
MyObject.reopen({
say: function(msg){
console.log(msg);
}
})
o2 = MyObject.create();
o2.say("hello"); // logs "hello"
o.say("goodbye"); // logs "goodbye"
`
To add functions and properties to the constructor itself,
see reopenClass
reopenClass
()
`
javascript
MyObject = Ember.Object.extend({
name: 'an object'
});
MyObject.reopenClass({
canBuild: false
});
MyObject.canBuild; // false
o = MyObject.create();
`
In other words, this creates static properties and functions for the class. These are only available on the class
and not on any instance of that class.
`
javascript
App.Person = Ember.Object.extend({
name : "",
sayHello : function(){
alert("Hello. My name is " + this.get('name'));
}
});
App.Person.reopenClass({
species : "Homo sapiens",
createPerson: function(newPersonsName){
return App.Person.create({
name:newPersonsName
});
}
});
var tom = App.Person.create({
name : "Tom Dale"
});
var yehuda = App.Person.createPerson("Yehuda Katz");
tom.sayHello(); // "Hello. My name is Tom Dale"
yehuda.sayHello(); // "Hello. My name is Yehuda Katz"
alert(App.Person.species); // "Homo sapiens"
`
Note that species
and createPerson
are *not* valid on the tom
and yehuda
variables. They are only valid on App.Person
.
To add functions and properties to instances of
a constructor by extending the constructor's prototype
see reopen
replaceWith
-
name
-
models
Transition into another route while replacing the current URL, if possible.
This will replace the current history entry instead of adding a new one.
Beside that, it is identical to transitionTo
in all other respects. See
'transitionTo' for additional information regarding multiple models.
Example
App.Router.map(function() {
this.route("index");
this.route("secret");
});
App.SecretRoute = Ember.Route.extend({
afterModel: function() {
if (!authorized()){
this.replaceWith('index');
}
}
});
Parameters:
-
name
Stringthe name of the route or a URL
-
models
...Objectthe model(s) or identifier(s) to be used while transitioning to the route.
Returns:
the transition object associated with this attempted transition
send
-
name
-
args
Sends an action to the router, which will delegate it to the currently
active route hierarchy per the bubbling rules explained under actions
.
Example
App.Router.map(function() {
this.route("index");
});
App.ApplicationRoute = Ember.Route.extend({
actions: {
track: function(arg) {
console.log(arg, 'was clicked');
}
}
});
App.IndexRoute = Ember.Route.extend({
actions: {
trackIfDebug: function(arg) {
if (debug) {
this.send('track', arg);
}
}
}
});
Parameters:
-
name
Stringthe name of the action to trigger
-
args
...
serialize
-
model
-
params
A hook you can implement to convert the route's model into parameters for the URL.
App.Router.map(function() {
this.resource('post', {path: '/posts/:post_id'});
});
App.PostRoute = Ember.Route.extend({
model: function(params) {
// the server returns { id: 12 }
return jQuery.getJSON("/posts/" + params.post_id);
},
serialize: function(model) {
// this will make the URL /posts/12
return { post_id: model.id };
}
});
The default serialize
method will insert the model's id
into the
route's dynamic segment (in this case, :post_id
) if the segment contains '_id'.
If the route has multiple dynamic segments or does not contain '_id', serialize
will return Ember.getProperties(model, params)
This method is called when transitionTo
is called with a context
in order to populate the URL.
Parameters:
-
model
Objectthe route's model
-
params
Arrayan Array of parameter names for the current route (in the example,
['post_id']
.
Returns:
the serialized parameters
set
-
keyName
-
value
object[key] = value
or
object.key = value
, except that it provides support for computed
properties, the setUnknownProperty()
method and property observers.
### Computed Properties
If you try to set a value on a key that has a computed property handler
defined (see the get()
method for an example), then set()
will call
that method, passing both the value and key instead of simply changing
the value itself. This is useful for those times when you need to
implement a property that is composed of one or more member
properties.
### Unknown Properties
If you try to set a value on a key that is undefined in the target
object, then the setUnknownProperty()
handler will be called instead. This
gives you an opportunity to implement complex "virtual" properties that
are not predefined on the object. If setUnknownProperty()
returns
undefined, then set()
will simply set the value on the object.
### Property Observers
In addition to changing the property, set()
will also register a property
change with the object. Unless you have placed this call inside of a
beginPropertyChanges()
and endPropertyChanges(),
any "local" observers
(i.e. observer methods declared on the same object), will be called
immediately. Any "remote" observers (i.e. observer methods declared on
another object) will be placed in a queue and called at a later time in a
coalesced manner.
### Chaining
In addition to property changes, set()
returns the value of the object
itself so you can do chaining like this:
`
javascript
record.set('firstName', 'Charles').set('lastName', 'Jolley');
`
Parameters:
-
keyName
StringThe property to set -
value
ObjectThe value to set ornull
.
Returns:
setProperties
-
hash
beginPropertyChanges
and endPropertyChanges
batch, so
observers will be buffered.
`
javascript
record.setProperties({ firstName: 'Charles', lastName: 'Jolley' });
`
Parameters:
-
hash
Hashthe hash of keys and values to set
Returns:
setup
()
private
This hook is the entry point for router.js
setupController
-
controller
-
model
A hook you can use to setup the controller for the current route.
This method is called with the controller for the current route and the
model supplied by the model
hook.
By default, the setupController
hook sets the content
property of
the controller to the model
.
If you implement the setupController
hook in your Route, it will
prevent this default behavior. If you want to preserve that behavior
when implementing your setupController
function, make sure to call
_super
:
App.PhotosRoute = Ember.Route.extend({
model: function() {
return App.Photo.find();
},
setupController: function (controller, model) {
// Call _super for default behavior
this._super(controller, model);
// Implement your custom setup after
this.controllerFor('application').set('showingPhotos', true);
}
});
This means that your template will get a proxy for the model as its context, and you can act as though the model itself was the context.
The provided controller will be one resolved based on the name of this route.
If no explicit controller is defined, Ember will automatically create an appropriate controller for the model.
- if the model is an
Ember.Array
(including record arrays from Ember Data), the controller is anEmber.ArrayController
. - otherwise, the controller is an
Ember.ObjectController
.
As an example, consider the router:
App.Router.map(function() {
this.resource('post', {path: '/posts/:post_id'});
});
For the post
route, a controller named App.PostController
would
be used if it is defined. If it is not defined, an Ember.ObjectController
instance would be used.
Example
App.PostRoute = Ember.Route.extend({
setupController: function(controller, model) {
controller.set('model', model);
}
});
Parameters:
-
controller
Controllerinstance
-
model
Object
store
-
store
Store property provides a hook for data persistence libraries to inject themselves.
By default, this store property provides the exact same functionality previously in the model hook.
Currently, the required interface is:
store.find(modelName, findArguments)
Parameters:
-
store
Object
teardownViews
()
private
toggleProperty
-
keyName
`
javascript
starship.toggleProperty('warpDriveEngaged');
`
Parameters:
-
keyName
StringThe name of the property to toggle
Returns:
toString
()
String
toString
typically does, in a generic way for all Ember
objects.
`
javascript
App.Person = Em.Object.extend()
person = App.Person.create()
person.toString() //=> "`
If the object's class is not defined on an Ember namespace, it will
indicate it is a subclass of the registered superclass:
`
javascript
Student = App.Person.extend()
student = Student.create()
student.toString() //=> "<(subclass of App.Person):ember1025>"
`
If the method toStringExtension
is defined, its return value will be
included in the output.
`
javascript
App.Teacher = App.Person.extend({
toStringExtension: function() {
return this.get('fullName');
}
});
teacher = App.Teacher.create()
teacher.toString(); //=> "`
Returns:
transitionTo
-
name
-
models
Transition the application into another route. The route may be either a single route or route path:
this.transitionTo('blogPosts');
this.transitionTo('blogPosts.recentEntries');
Optionally supply a model for the route in question. The model
will be serialized into the URL using the serialize
hook of
the route:
this.transitionTo('blogPost', aPost);
If a literal is passed (such as a number or a string), it will
be treated as an identifier instead. In this case, the model
hook of the route will be triggered:
this.transitionTo('blogPost', 1);
Multiple models will be applied last to first recursively up the resource tree.
App.Router.map(function() {
this.resource('blogPost', {path:':blogPostId'}, function(){
this.resource('blogComment', {path: ':blogCommentId'});
});
});
this.transitionTo('blogComment', aPost, aComment);
this.transitionTo('blogComment', 1, 13);
It is also possible to pass a URL (a string that starts with a
/
). This is intended for testing and debugging purposes and
should rarely be used in production code.
this.transitionTo('/');
this.transitionTo('/blog/post/1/comment/13');
See also 'replaceWith'.
Simple Transition Example
App.Router.map(function() {
this.route("index");
this.route("secret");
this.route("fourOhFour", { path: "*:"});
});
App.IndexRoute = Ember.Route.extend({
actions: {
moveToSecret: function(context){
if (authorized()){
this.transitionTo('secret', context);
}
this.transitionTo('fourOhFour');
}
}
});
Transition to a nested route
App.Router.map(function() {
this.resource('articles', { path: '/articles' }, function() {
this.route('new');
});
});
App.IndexRoute = Ember.Route.extend({
actions: {
transitionToNewArticle: function() {
this.transitionTo('articles.new');
}
}
});
Multiple Models Example
App.Router.map(function() {
this.route("index");
this.resource('breakfast', {path:':breakfastId'}, function(){
this.resource('cereal', {path: ':cerealId'});
});
});
App.IndexRoute = Ember.Route.extend({
actions: {
moveToChocolateCereal: function(){
var cereal = { cerealId: "ChocolateYumminess"},
breakfast = {breakfastId: "CerealAndMilk"};
this.transitionTo('cereal', breakfast, cereal);
}
}
});
Parameters:
-
name
Stringthe name of the route or a URL
-
models
...Objectthe model(s) or identifier(s) to be used while transitioning to the route.
Returns:
the transition object associated with this attempted transition
willDestroy
()
willMergeMixin
()
private
actions
to _actions
at extend time. Note that this currently
modifies the mixin themselves, which is technically dubious but
is practically of little consequence. This may change in the future.
Properties
actions
Hash
ActionHandler
as action targets.
These functions will be invoked when a matching {{action}}
is triggered
from within a template and the application's current route is this route.
Actions can also be invoked from other parts of your application
via ActionHandler#send
.
The actions
hash will inherit action handlers from
the actions
hash defined on extended parent classes
or mixins rather than just replace the entire hash, e.g.:
`
js
App.CanDisplayBanner = Ember.Mixin.create({
actions: {
displayBanner: function(msg) {
// ...
}
}
});
App.WelcomeRoute = Ember.Route.extend(App.CanDisplayBanner, {
actions: {
playMusic: function() {
// ...
}
}
});
// WelcomeRoute
, when active, will be able to respond
// to both actions, since the actions hash is merged rather
// then replaced when extending mixins / parent classes.
this.send('displayBanner');
this.send('playMusic');
`
Within a Controller, Route, View or Component's action handler,
the value of the this
context is the Controller, Route, View or
Component object:
`
js
App.SongRoute = Ember.Route.extend({
actions: {
myAction: function() {
this.controllerFor("song");
this.transitionTo("other.route");
...
}
}
});
`
It is also possible to call this._super()
from within an
action handler if it overrides a handler defined on a parent
class or mixin:
Take for example the following routes:
`
js
App.DebugRoute = Ember.Mixin.create({
actions: {
debugRouteInformation: function() {
console.debug("trololo");
}
}
});
App.AnnoyingDebugRoute = Ember.Route.extend(App.DebugRoute, {
actions: {
debugRouteInformation: function() {
// also call the debugRouteInformation of mixed in App.DebugRoute
this._super();
// show additional annoyance
window.alert(...);
}
}
});
`
## Bubbling
By default, an action will stop bubbling once a handler defined
on the actions
hash handles it. To continue bubbling the action,
you must return true
from the handler:
`
js
App.Router.map(function() {
this.resource("album", function() {
this.route("song");
});
});
App.AlbumRoute = Ember.Route.extend({
actions: {
startPlaying: function() {
}
}
});
App.AlbumSongRoute = Ember.Route.extend({
actions: {
startPlaying: function() {
// ...
if (actionShouldAlsoBeTriggeredOnParentRoute) {
return true;
}
}
}
});
`
Default: null
concatenatedProperties
Array
classNames
property of Ember.View
.
Here is some sample code showing the difference between a concatenated
property and a normal one:
`
javascript
App.BarView = Ember.View.extend({
someNonConcatenatedProperty: ['bar'],
classNames: ['bar']
});
App.FooBarView = App.BarView.extend({
someNonConcatenatedProperty: ['foo'],
classNames: ['foo'],
});
var fooBarView = App.FooBarView.create();
fooBarView.get('someNonConcatenatedProperty'); // ['foo']
fooBarView.get('classNames'); // ['ember-view', 'bar', 'foo']
`
This behavior extends to object creation as well. Continuing the
above example:
`
javascript
var view = App.FooBarView.create({
someNonConcatenatedProperty: ['baz'],
classNames: ['baz']
})
view.get('someNonConcatenatedProperty'); // ['baz']
view.get('classNames'); // ['ember-view', 'bar', 'foo', 'baz']
`
Adding a single property that is not an array will just add it in the array:
`
javascript
var view = App.FooBarView.create({
classNames: 'baz'
})
view.get('classNames'); // ['ember-view', 'bar', 'foo', 'baz']
`
Using the concatenatedProperties
property, we can tell to Ember that mix
the content of the properties.
In Ember.View
the classNameBindings
and attributeBindings
properties
are also concatenated, in addition to classNames
.
This feature is available for you to use throughout the Ember object model,
although typical app developers are likely to use it infrequently. Since
it changes expectations about behavior of properties, you should properly
document its usage in each individual concatenated property (to not
mislead your users to think they can override the property in a subclass).
Default: null
controller
Ember.Controller
The controller associated with this route.
Example
App.FormRoute = Ember.Route.extend({
actions: {
willTransition: function(transition) {
if (this.controller.get('userHasEnteredData') &&
!confirm("Are you sure you want to abandon progress?")) {
transition.abort();
} else {
// Bubble the willTransition
action so that
// parent routes can decide whether or not to abort.
return true;
}
}
}
});
controllerName
String
The name of the controller to associate with this route.
By default, Ember will lookup a route's controller that matches the name
of the route (i.e. App.PostController
for App.PostRoute
). However,
if you would like to define a specific controller to use, you can do so
using this property.
This is useful in many ways, as the controller specified will be:
- passed to the
setupController
method. - used as the controller for the view being rendered by the route.
- returned from a call to
controllerFor
for the route.
Default: null
isDestroyed
Unknown
true
the observers and bindings were already
removed by the effect of calling the destroy()
method.
Default: false
isDestroying
Unknown
destroy()
method has been called.
The object stays intact until the end of the run loop at which point
the isDestroyed
flag is set.
Default: false
queryParams
Hash
Configuration hash for this route's queryParams. The possible
configuration options and their defaults are as follows
(assuming a query param whose URL key is page
):
queryParams: {
page: {
// By default, controller query param properties don't
// cause a full transition when they are changed, but
// rather only cause the URL to update. Setting
// refreshModel
to true will cause an "in-place"
// transition to occur, whereby the model hooks for
// this route (and any child routes) will re-fire, allowing
// you to reload models (e.g., from the server) using the
// updated query param values.
refreshModel: false,
// By default, changes to controller query param properties
// cause the URL to update via pushState
, which means an
// item will be added to the browser's history, allowing
// you to use the back button to restore the app to the
// previous state before the query param property was changed.
// Setting replace
to true will use replaceState
(or its
// hash location equivalent), which causes no browser history
// item to be added. This options name and default value are
// the same as the link-to
helper's replace
option.
replace: false
}
}
templateName
String
The name of the template to use by default when rendering this routes template.
This is similar with viewName
, but is useful when you just want a custom
template without a view.
var PostsList = Ember.Route.extend({
templateName: 'posts/list'
});
App.PostsIndexRoute = PostsList.extend();
App.PostsArchivedRoute = PostsList.extend();
Default: null
viewName
String
The name of the view to use by default when rendering this routes template.
When rendering a template, the route will, by default, determine the template and view to use from the name of the route itself. If you need to define a specific view, set this property.
This is useful when multiple routes would benefit from using the same view
because it doesn't require a custom renderTemplate
method. For example,
the following routes will all render using the App.PostsListView
view:
var PostsList = Ember.Route.extend({
viewName: 'postsList',
});
App.PostsIndexRoute = PostsList.extend();
App.PostsArchivedRoute = PostsList.extend();
Default: null
Events
didTransition
The didTransition
action is fired after a transition has
successfully been completed. This occurs after the normal model
hooks (beforeModel
, model
, afterModel
, setupController
)
have resolved. The didTransition
action has no arguments,
however, it can be useful for tracking page views or resetting
state on the controller.
App.LoginRoute = Ember.Route.extend({
actions: {
didTransition: function() {
this.controller.get('errors.base').clear();
return true; // Bubble the didTransition event
}
}
});
error
When attempting to transition into a route, any of the hooks
may return a promise that rejects, at which point an error
action will be fired on the partially-entered routes, allowing
for per-route error handling logic, or shared error handling
logic defined on a parent route.
Here is an example of an error handler that will be invoked for rejected promises from the various hooks on the route, as well as any unhandled errors from child routes:
App.AdminRoute = Ember.Route.extend({
beforeModel: function() {
return Ember.RSVP.reject("bad things!");
},
actions: {
error: function(error, transition) {
// Assuming we got here due to the error in beforeModel
,
// we can expect that error === "bad things!",
// but a promise model rejecting would also
// call this hook, as would any errors encountered
// in afterModel
.
// The error
hook is also provided the failed
// transition
, which can be stored and later
// .retry()
d if desired.
this.transitionTo('login');
}
}
});
error
actions that bubble up all the way to ApplicationRoute
will fire a default error handler that logs the error. You can
specify your own global default error handler by overriding the
error
handler on ApplicationRoute
:
App.ApplicationRoute = Ember.Route.extend({
actions: {
error: function(error, transition) {
this.controllerFor('banner').displayError(error.message);
}
}
});
Event Payload:
-
error
Error -
transition
Transition
loading
The loading
action is fired on the route when a route's model
hook returns a promise that is not already resolved. The current
Transition
object is the first parameter and the route that
triggered the loading event is the second parameter.
App.ApplicationRoute = Ember.Route.extend({
actions: {
loading: function(transition, route) {
var view = Ember.View.create({
classNames: ['app-loading']
})
.append();
this.router.one('didTransition', function () {
view.destroy();
});
return true; // Bubble the loading event
}
}
});
Event Payload:
-
transition
Transition -
route
Ember.RouteThe route that triggered the loading event
willTransition
The willTransition
action is fired at the beginning of any
attempted transition with a Transition
object as the sole
argument. This action can be used for aborting, redirecting,
or decorating the transition from the currently active routes.
A good example is preventing navigation when a form is half-filled out:
App.ContactFormRoute = Ember.Route.extend({
actions: {
willTransition: function(transition) {
if (this.controller.get('userHasEnteredData')) {
this.controller.displayNavigationConfirm();
transition.abort();
}
}
}
});
You can also redirect elsewhere by calling
this.transitionTo('elsewhere')
from within willTransition
.
Note that willTransition
will not be fired for the
redirecting transitionTo
, since willTransition
doesn't
fire when there is already a transition underway. If you want
subsequent willTransition
actions to fire for the redirecting
transition, you must first explicitly call
transition.abort()
.
Event Payload:
-
transition
Transition