API Docs for: 3.18.1

LazyModelList Class

Extends ModelList
Defined in: app/js/lazy-model-list.js:10
Module: lazy-model-list
Parent Module: app

Available since 3.6.0

LazyModelList is a subclass of ModelList that maintains a list of plain JavaScript objects rather than a list of Model instances. This makes it well-suited for managing large amounts of data (on the order of thousands of items) that would tend to bog down a vanilla ModelList.

The API presented by LazyModelList is the same as that of ModelList, except that in every case where ModelList would provide a Model instance, LazyModelList provides a plain JavaScript object. LazyModelList also provides a revive() method that can convert the plain object at a given index into a full Model instance.

Since the items stored in a LazyModelList are plain objects and not full Model instances, there are a few caveats to be aware of:

  • Since items are plain objects and not Model instances, they contain properties rather than Model attributes. To retrieve a property, use item.foo rather than item.get('foo'). To set a property, use item.foo = 'bar' rather than item.set('foo', 'bar').

  • Model attribute getters and setters aren't supported, since items in the LazyModelList are stored and manipulated as plain objects with simple properties rather than YUI attributes.

  • Changes made to the plain object version of an item will not trigger or bubble up Model change events. However, once an item is revived into a full Model using the revive() method, changes to that Model instance will trigger and bubble change events as expected.

  • Custom idAttribute fields are not supported.

  • id and clientId properties are supported. If an item doesn't have a clientId property, one will be generated automatically when the item is added to a LazyModelList.

LazyModelList is generally much more memory efficient than ModelList when managing large numbers of items, and adding/removing items is significantly faster. However, the tradeoff is that LazyModelList is only well-suited for storing very simple items without complex attributes, and consumers must explicitly revive items into full Model instances as needed (this is not done transparently for performance reasons).

Constructor

LazyModelList

()

Defined in app/js/lazy-model-list.js:10

Available since 3.6.0

Methods

add

(
  • models
  • [options]
)
Model | Model[]

Inherited from ArrayList but overwritten in app/js/model-list.js:208

Adds the specified model or array of models to this list. You may also pass another ModelList instance, in which case all the models in that list will be added to this one as well.

Parameters:

  • models Model | Model[] | ModelList | Object | Object[]

    Model or array of models to add. May be existing model instances or hashes of model attributes, in which case new model instances will be created from the hashes. You may also pass a ModelList instance to add all the models it contains.

  • [options] Object optional

    Data to be mixed into the event facade of the add event(s) for the added models.

    • [index] Number optional

      Index at which to insert the added models. If not specified, the models will automatically be inserted in the appropriate place according to the current sort order as dictated by the comparator() method, if any.

    • [silent=false] Boolean optional

      If true, no add event(s) will be fired.

Returns:

Model | Model[]:

Added model or array of added models.

Example:

// Add a single model instance.
list.add(new Model({foo: 'bar'}));

// Add a single model, creating a new instance automatically.
list.add({foo: 'bar'});

// Add multiple models, creating new instances automatically.
list.add([
    {foo: 'bar'},
    {baz: 'quux'}
]);

// Add all the models in another ModelList instance.
list.add(otherList);

addAttr

(
  • name
  • config
  • lazy
)
Object chainable

Inherited from AttributeCore: attribute/js/AttributeCore.js:157

Adds an attribute with the provided configuration to the host object.

The config argument object supports the following properties:

value <Any>
The initial value to set on the attribute
valueFn <Function | String>

A function, which will return the initial value to set on the attribute. This is useful for cases where the attribute configuration is defined statically, but needs to reference the host instance ("this") to obtain an initial value. If both the value and valueFn properties are defined, the value returned by the valueFn has precedence over the value property, unless it returns undefined, in which case the value property is used.

valueFn can also be set to a string, representing the name of the instance method to be used to retrieve the value.

readOnly <boolean>
Whether or not the attribute is read only. Attributes having readOnly set to true cannot be modified by invoking the set method.
writeOnce <boolean> or <string>
Whether or not the attribute is "write once". Attributes having writeOnce set to true, can only have their values set once, be it through the default configuration, constructor configuration arguments, or by invoking set.

The writeOnce attribute can also be set to the string "initOnly", in which case the attribute can only be set during initialization (when used with Base, this means it can only be set during construction)

setter <Function | String>

The setter function used to massage or normalize the value passed to the set method for the attribute. The value returned by the setter will be the final stored value. Returning Attribute.INVALID_VALUE, from the setter will prevent the value from being stored.

setter can also be set to a string, representing the name of the instance method to be used as the setter function.

getter <Function | String>

The getter function used to massage or normalize the value returned by the get method for the attribute. The value returned by the getter function is the value which will be returned to the user when they invoke get.

getter can also be set to a string, representing the name of the instance method to be used as the getter function.

validator <Function | String>

The validator function invoked prior to setting the stored value. Returning false from the validator function will prevent the value from being stored.

validator can also be set to a string, representing the name of the instance method to be used as the validator function.

lazyAdd <boolean>
Whether or not to delay initialization of the attribute until the first call to get/set it. This flag can be used to over-ride lazy initialization on a per attribute basis, when adding multiple attributes through the addAttrs method.

The setter, getter and validator are invoked with the value and name passed in as the first and second arguments, and with the context ("this") set to the host object.

Configuration properties outside of the list mentioned above are considered private properties used internally by attribute, and are not intended for public use.

Parameters:

  • name String

    The name of the attribute.

  • config Object

    An object with attribute configuration property/value pairs, specifying the configuration for the attribute.

    NOTE: The configuration object is modified when adding an attribute, so if you need to protect the original values, you will need to merge the object.

  • lazy Boolean

    (optional) Whether or not to add this attribute lazily (on the first call to get/set).

Returns:

Object:

A reference to the host object.

addAttrs

(
  • cfgs
  • values
  • lazy
)
Object chainable

Inherited from AttributeCore: attribute/js/AttributeCore.js:823

Configures a group of attributes, and sets initial values.

NOTE: This method does not isolate the configuration object by merging/cloning. The caller is responsible for merging/cloning the configuration object if required.

Parameters:

  • cfgs Object

    An object with attribute name/configuration pairs.

  • values Object

    An object with attribute name/value pairs, defining the initial values to apply. Values defined in the cfgs argument will be over-written by values in this argument unless defined as read only.

  • lazy Boolean

    Whether or not to delay the intialization of these attributes until the first call to get/set. Individual attributes can over-ride this behavior by defining a lazyAdd configuration property in their configuration. See addAttr.

Returns:

Object:

A reference to the host object.

addTarget

(
  • o
)
chainable

Inherited from EventTarget: event-custom/js/event-facade.js:496

Registers another EventTarget as a bubble target. Bubble order is determined by the order registered. Multiple targets can be specified.

Events can only bubble if emitFacade is true.

Included in the event-custom-complex submodule.

Parameters:

after

(
  • type
  • fn
  • [context]
  • [arg*]
)
EventHandle

Inherited from EventTarget: event-custom/js/event-target.js:812

Subscribe to a custom event hosted by this object. The supplied callback will execute after any listeners add via the subscribe method, and after the default function, if configured for the event, has executed.

Parameters:

  • type String

    The name of the event

  • fn Function

    The callback to execute in response to the event

  • [context] Object optional

    Override this object in callback

  • [arg*] Any optional

    0..n additional arguments to supply to the subscriber

Returns:

EventHandle:

A subscription handle capable of detaching the subscription

attrAdded

(
  • name
)
Boolean

Inherited from AttributeCore: attribute/js/AttributeCore.js:319

Checks if the given attribute has been added to the host

Parameters:

  • name String

    The name of the attribute to check.

Returns:

Boolean:

true if an attribute with the given name has been added, false if it hasn't. This method will return true for lazily added attributes.

before

()

Inherited from EventTarget: event-custom/js/event-target.js:849

Executes the callback before a DOM event, custom event or method. If the first argument is a function, it is assumed the target is a method. For DOM and custom events, this is an alias for Y.on.

For DOM and custom events: type, callback, context, 0-n arguments

For methods: callback, object (method host), methodName, context, 0-n arguments

Returns:

detach handle

bubble

(
  • evt
)
Boolean

Inherited from EventTarget: event-custom/js/event-facade.js:554

Propagate an event. Requires the event-custom-complex module.

Parameters:

Returns:

Boolean:

the aggregated return value from Event.Custom.fire

comparator

(
  • model
)
Number | String

Inherited from ModelList: app/js/model-list.js:271

Define this method to provide a function that takes a model as a parameter and returns a value by which that model should be sorted relative to other models in this list.

By default, no comparator is defined, meaning that models will not be sorted (they'll be stored in the order they're added).

Parameters:

  • model Model

    Model being sorted.

Returns:

Number | String:

Value by which the model should be sorted relative to other models in this list.

Example:

var list = new Y.ModelList({model: Y.Model});

list.comparator = function (model) {
    return model.get('id'); // Sort models by id.
};

create

(
  • model
  • [options]
  • [callback]
)
Model

Inherited from ModelList: app/js/model-list.js:294

Creates or updates the specified model on the server, then adds it to this list if the server indicates success.

Parameters:

  • model Model | Object

    Model to create. May be an existing model instance or a hash of model attributes, in which case a new model instance will be created from the hash.

  • [options] Object optional

    Options to be passed to the model's sync() and set() methods and mixed into the create and add event facades.

    • [silent=false] Boolean optional

      If true, no add event(s) will be fired.

  • [callback] Function optional

    Called when the sync operation finishes.

    • err Error

      If an error occurred, this parameter will contain the error. If the sync operation succeeded, err will be falsy.

    • response Any

      The server's response.

Returns:

Model:

Created model.

destroy

() BaseCore chainable

Inherited from BaseObservable but overwritten in base/js/BaseCore.js:352

Destroy lifecycle method. Invokes destructors for the class hierarchy.

Returns:

BaseCore:

A reference to this object

detach

(
  • type
  • fn
  • context
)
EventTarget

Inherited from EventTarget: event-custom/js/event-target.js:356

Detach one or more listeners the from the specified event

Parameters:

  • type String | Object

    Either the handle to the subscriber or the type of event. If the type is not specified, it will attempt to remove the listener from all hosted events.

  • fn Function

    The subscribed function to unsubscribe, if not supplied, all subscribers will be removed.

  • context Object

    The custom object passed to subscribe. This is optional, but if supplied will be used to disambiguate multiple listeners that are the same (e.g., you subscribe many object using a function that lives on the prototype)

Returns:

EventTarget:

the host

detachAll

(
  • type
)

Inherited from EventTarget: event-custom/js/event-target.js:479

Removes all listeners from the specified event. If the event type is not specified, all listeners from all hosted custom events will be removed.

Parameters:

  • type String

    The type, or name of the event

each

(
  • callback
  • [thisObj]
)
chainable

Inherited from ArrayList but overwritten in app/js/model-list.js:343

Available since 3.6.0

Executes the supplied function on each model in this list.

By default, the callback function's this object will refer to the model currently being iterated. Specify a thisObj to override the this object if desired.

Note: Iteration is performed on a copy of the internal array of models, so it's safe to delete a model from the list during iteration.

Parameters:

  • callback Function

    Function to execute on each model.

    • model Model

      Model instance.

    • index Number

      Index of the current model.

    • list ModelList

      The ModelList being iterated.

  • [thisObj] Object optional

    Object to use as the this object when executing the callback.

filter

(
  • [options]
  • callback
)
Model[] | ModelList

Inherited from ArrayList but overwritten in app/js/model-list.js:375

Available since 3.5.0

Executes the supplied function on each model in this list. Returns an array containing the models for which the supplied function returned a truthy value.

The callback function's this object will refer to this ModelList. Use Y.bind() to bind the this object to another object if desired.

Parameters:

  • [options] Object optional

    Filter options.

    • [asList=false] Boolean optional

      If truthy, results will be returned as a new ModelList instance rather than as an array.

  • callback Function

    Function to execute on each model.

    • model Model

      Model instance.

    • index Number

      Index of the current model.

    • list ModelList

      The ModelList being filtered.

Returns:

Model[] | ModelList:

Array of models for which the callback function returned a truthy value (empty if it never returned a truthy value). If the options.asList option is truthy, a new ModelList instance will be returned instead of an array.

Example:

// Get an array containing only the models whose "enabled" attribute is
// truthy.
var filtered = list.filter(function (model) {
    return model.get('enabled');
});

// Get a new ModelList containing only the models whose "enabled"
// attribute is truthy.
var filteredList = list.filter({asList: true}, function (model) {
    return model.get('enabled');
});

fire

(
  • type
  • arguments
)
Boolean

Inherited from EventTarget: event-custom/js/event-target.js:673

Fire a custom event by name. The callback functions will be executed from the context specified when the event was created, and with the following parameters.

The first argument is the event type, and any additional arguments are passed to the listeners as parameters. If the first of these is an object literal, and the event is configured to emit an event facade, that object is mixed into the event facade and the facade is provided in place of the original object.

If the custom event object hasn't been created, then the event hasn't been published and it has no subscribers. For performance sake, we immediate exit in this case. This means the event won't bubble, so if the intention is that a bubble target be notified, the event must be published on this object first.

Parameters:

  • type String | Object

    The type of the event, or an object that contains a 'type' property.

  • arguments Object*

    an arbitrary set of parameters to pass to the handler. If the first of these is an object literal and the event is configured to emit an event facade, the event facade will replace that parameter after the properties the object literal contains are copied to the event facade.

Returns:

Boolean:

True if the whole lifecycle of the event went through, false if at any point the event propagation was halted.

free

(
  • [model]
)
chainable

Defined in app/js/lazy-model-list.js:75

Deletes the specified model from the model cache to release memory. The model won't be destroyed or removed from the list, just freed from the cache; it can still be instantiated again using revive().

If no model or model index is specified, all cached models in this list will be freed.

Note: Specifying an index is faster than specifying a model instance, since the latter requires an indexOf() call.

Parameters:

  • [model] Model | Number optional

    Model or index of the model to free. If not specified, all instantiated models in this list will be freed.

get

(
  • name
)
String[]

Inherited from AttributeCore but overwritten in app/js/lazy-model-list.js:116

Overrides ModelList#get() to return a map of property values rather than performing attribute lookups.

Parameters:

Returns:

String[]:

Array of property values.

getAsHTML

(
  • name
)
String[]

Inherited from ModelList but overwritten in app/js/lazy-model-list.js:135

Overrides ModelList#getAsHTML() to return a map of HTML-escaped property values rather than performing attribute lookups.

Parameters:

Returns:

String[]:

Array of HTML-escaped property values.

getAsURL

(
  • name
)
String[]

Inherited from ModelList but overwritten in app/js/lazy-model-list.js:154

Overrides ModelList#getAsURL() to return a map of URL-encoded property values rather than performing attribute lookups.

Parameters:

Returns:

String[]:

Array of URL-encoded property values.

getAttrs

(
  • attrs
)
Object

Inherited from AttributeCore: attribute/js/AttributeCore.js:780

Gets multiple attribute values.

Parameters:

  • attrs String[] | Boolean

    Optional. An array of attribute names. If omitted, all attribute values are returned. If set to true, all attributes modified from their initial values are returned.

Returns:

Object:

An object with attribute name/value pairs.

getByClientId

(
  • clientId
)
Model

Inherited from ModelList: app/js/model-list.js:506

Returns the model with the specified clientId, or null if not found.

Parameters:

Returns:

Model:

Model, or null if not found.

getById

(
  • id
)
Model

Inherited from ModelList: app/js/model-list.js:517

Returns the model with the specified id, or null if not found.

Note that models aren't expected to have an id until they're saved, so if you're working with unsaved models, it may be safer to call getByClientId().

Parameters:

Returns:

Model:

Model, or null if not found.

getEvent

(
  • type
  • prefixed
)
CustomEvent

Inherited from EventTarget: event-custom/js/event-target.js:793

Returns the custom event of the provided type has been created, a falsy value otherwise

Parameters:

  • type String

    the type, or name of the event

  • prefixed String

    if true, the type is prefixed already

Returns:

CustomEvent:

the custom event or null

getTargets

()

Inherited from EventTarget: event-custom/js/event-facade.js:523

Returns an array of bubble targets for this object.

Returns:

EventTarget[]

indexOf

(
  • needle
)
Number

Inherited from ArrayList but overwritten in app/js/lazy-model-list.js:173

Returns the index of the given object or Model instance in this LazyModelList.

Parameters:

  • needle Model | Object

    The object or Model instance to search for.

Returns:

Number:

Item index, or -1 if not found.

init

(
  • cfg
)
BaseCore chainable

Inherited from BaseObservable but overwritten in base/js/BaseCore.js:319

Init lifecycle method, invoked during construction. Sets up attributes and invokes initializers for the class hierarchy.

Parameters:

  • cfg Object

    Object with configuration property name/value pairs

Returns:

BaseCore:

A reference to this object

invoke

(
  • name
  • [args*]
)
Any

Inherited from ModelList: app/js/model-list.js:532

Calls the named method on every model in the list. Any arguments provided after name will be passed on to the invoked method.

Parameters:

  • name String

    Name of the method to call on each model.

  • [args*] Any optional

    Zero or more arguments to pass to the invoked method.

Returns:

Any:

Array of return values, indexed according to the index of the model on which the method was called.

isEmpty

() Boolean

Inherited from ArrayList: collection/js/arraylist.js:116

Is this instance managing any items?

Returns:

Boolean:

true if 1 or more items are being managed

item

(
  • index
)
Model

Inherited from ArrayList but overwritten in app/js/model-list.js:547

Returns the model at the specified index.

Parameters:

  • index Number

    Index of the model to fetch.

Returns:

Model:

The model at the specified index, or undefined if there isn't a model there.

itemsAreEqual

(
  • a
  • b
)
Boolean deprecated

Inherited from ArrayList: collection/js/arraylist-add.js:68

Deprecated: Use ModelList or a custom ArrayList subclass

Default comparator for items stored in this list. Used by remove().

Parameters:

  • a Mixed

    item to test equivalence with.

  • b Mixed

    other item to test equivalance.

Returns:

Boolean:

true if items are deemed equivalent.

load

(
  • [options]
  • [callback]
)
chainable

Inherited from ModelList: app/js/model-list.js:558

Loads this list of models from the server.

This method delegates to the sync() method to perform the actual load operation, which is an asynchronous action. Specify a callback function to be notified of success or failure.

If the load operation succeeds, a reset event will be fired.

Parameters:

  • [options] Object optional

    Options to be passed to sync() and to reset() when adding the loaded models. It's up to the custom sync implementation to determine what options it supports or requires, if any.

  • [callback] Function optional

    Called when the sync operation finishes.

    • err Error

      If an error occurred, this parameter will contain the error. If the sync operation succeeded, err will be falsy.

    • response Any

      The server's response. This value will be passed to the parse() method, which is expected to parse it and return an array of model attribute hashes.

map

(
  • fn
  • [thisObj]
)
Array

Inherited from ModelList: app/js/model-list.js:626

Executes the specified function on each model in this list and returns an array of the function's collected return values.

Parameters:

  • fn Function

    Function to execute on each model.

    • model Model

      Current model being iterated.

    • index Number

      Index of the current model in the list.

    • models Model[]

      Array of models being iterated.

  • [thisObj] Object optional

    this object to use when calling fn.

Returns:

Array:

Array of return values from fn.

modifyAttr

(
  • name
  • config
)

Inherited from AttributeExtras: attribute/js/AttributeExtras.js:40

Updates the configuration of an attribute which has already been added.

The properties which can be modified through this interface are limited to the following subset of attributes, which can be safely modified after a value has already been set on the attribute:

readOnly;
writeOnce;
broadcast; and
getter.

Note: New attributes cannot be added using this interface. New attributes must be added using addAttr, or an appropriate manner for a class which utilises Attributes (e.g. the ATTRS property in Base).

Parameters:

  • name String

    The name of the attribute whose configuration is to be updated.

  • config Object

    An object with configuration property/value pairs, specifying the configuration properties to modify.

on

(
  • type
  • fn
  • [context]
  • [arg*]
)
EventHandle

Inherited from EventTarget: event-custom/js/event-target.js:188

Subscribe a callback function to a custom event fired by this object or from an object that bubbles its events to this object.

 this.on("change", this._onChange, this);

Callback functions for events published with emitFacade = true will receive an EventFacade as the first argument (typically named "e"). These callbacks can then call e.preventDefault() to disable the behavior published to that event's defaultFn. See the EventFacade API for all available properties and methods. Subscribers to non-emitFacade events will receive the arguments passed to fire() after the event name.

To subscribe to multiple events at once, pass an object as the first argument, where the key:value pairs correspond to the eventName:callback.

 this.on({
     "attrChange" : this._onAttrChange,
     "change"     : this._onChange
 });

You can also pass an array of event names as the first argument to subscribe to all listed events with the same callback.

 this.on([ "change", "attrChange" ], this._onChange);

Returning false from a callback is supported as an alternative to calling e.preventDefault(); e.stopPropagation();. However, it is recommended to use the event methods whenever possible.

Parameters:

  • type String

    The name of the event

  • fn Function

    The callback to execute in response to the event

  • [context] Object optional

    Override this object in callback

  • [arg*] Any optional

    0..n additional arguments to supply to the subscriber

Returns:

EventHandle:

A subscription handle capable of detaching that subscription

once

(
  • type
  • fn
  • [context]
  • [arg*]
)
EventHandle

Inherited from EventTarget: event-custom/js/event-target.js:124

Listen to a custom event hosted by this object one time. This is the equivalent to on except the listener is immediatelly detached when it is executed.

Parameters:

  • type String

    The name of the event

  • fn Function

    The callback to execute in response to the event

  • [context] Object optional

    Override this object in callback

  • [arg*] Any optional

    0..n additional arguments to supply to the subscriber

Returns:

EventHandle:

A subscription handle capable of detaching the subscription

onceAfter

(
  • type
  • fn
  • [context]
  • [arg*]
)
EventHandle

Inherited from EventTarget: event-custom/js/event-target.js:146

Listen to a custom event hosted by this object one time. This is the equivalent to after except the listener is immediatelly detached when it is executed.

Parameters:

  • type String

    The name of the event

  • fn Function

    The callback to execute in response to the event

  • [context] Object optional

    Override this object in callback

  • [arg*] Any optional

    0..n additional arguments to supply to the subscriber

Returns:

EventHandle:

A subscription handle capable of detaching that subscription

parse

(
  • response
)
Object[]

Inherited from ModelList: app/js/model-list.js:642

Called to parse the response when the list is loaded from the server. This method receives a server response and is expected to return an array of model attribute hashes.

The default implementation assumes that response is either an array of attribute hashes or a JSON string that can be parsed into an array of attribute hashes. If response is a JSON string and either Y.JSON or the native JSON object are available, it will be parsed automatically. If a parse error occurs, an error event will be fired and the model will not be updated.

You may override this method to implement custom parsing logic if necessary.

Parameters:

  • response Any

    Server response.

Returns:

Object[]:

Array of model attribute hashes.

parseType

(
  • type
  • [pre]
)
Array

Inherited from EventTarget: event-custom/js/event-target.js:168

Available since 3.3.0

Takes the type parameter passed to 'on' and parses out the various pieces that could be included in the type. If the event type is passed without a prefix, it will be expanded to include the prefix one is supplied or the event target is configured with a default prefix.

Parameters:

  • type String

    the type

  • [pre] String optional

    The prefix. Defaults to this._yuievt.config.prefix

Returns:

Array:

an array containing:

  • the detach category, if supplied,
  • the prefixed event type,
  • whether or not this is an after listener,
  • the supplied event type

publish

(
  • type
  • opts
)
CustomEvent

Inherited from EventTarget: event-custom/js/event-target.js:503

Creates a new custom event of the specified type. If a custom event by that name already exists, it will not be re-created. In either case the custom event is returned.

Parameters:

  • type String

    the type, or name of the event

  • opts Object

    optional config params. Valid properties are:

    • [broadcast=false] Boolean optional

      whether or not the YUI instance and YUI global are notified when the event is fired.

    • [bubbles=true] Boolean optional

      Whether or not this event bubbles. Events can only bubble if emitFacade is true.

    • [context=this] Object optional

      the default execution context for the listeners.

    • [defaultFn] Function optional

      the default function to execute when this event fires if preventDefault was not called.

    • [emitFacade=false] Boolean optional

      whether or not this event emits a facade.

    • [prefix] String optional

      the prefix for this targets events, e.g., 'menu' in 'menu:click'.

    • [fireOnce=false] Boolean optional

      if an event is configured to fire once, new subscribers after the fire will be notified immediately.

    • [async=false] Boolean optional

      fireOnce event listeners will fire synchronously if the event has already fired unless async is true.

    • [preventable=true] Boolean optional

      whether or not preventDefault() has an effect.

    • [preventedFn] Function optional

      a function that is executed when preventDefault() is called.

    • [queuable=false] Boolean optional

      whether or not this event can be queued during bubbling.

    • [silent] Boolean optional

      if silent is true, debug messages are not provided for this event.

    • [stoppedFn] Function optional

      a function that is executed when stopPropagation is called.

    • [monitored] Boolean optional

      specifies whether or not this event should send notifications about when the event has been attached, detached, or published.

    • [type] String optional

      the event type (valid option if not provided as the first parameter to publish).

Returns:

CustomEvent:

the custom event

remove

(
  • models
  • [options]
)
Model | Model[]

Inherited from ArrayList but overwritten in app/js/model-list.js:678

Removes the specified model or array of models from this list. You may also pass another ModelList instance to remove all the models that are in both that instance and this instance, or pass numerical indices to remove the models at those indices.

Parameters:

  • models Model | Model[] | ModelList | Number | Number[]

    Models or indices of models to remove.

  • [options] Object optional

    Data to be mixed into the event facade of the remove event(s) for the removed models.

    • [silent=false] Boolean optional

      If true, no remove event(s) will be fired.

Returns:

Model | Model[]:

Removed model or array of removed models.

removeAttr

(
  • name
)

Inherited from AttributeExtras: attribute/js/AttributeExtras.js:90

Removes an attribute from the host object

Parameters:

  • name String

    The name of the attribute to be removed.

removeTarget

(
  • o
)
chainable

Inherited from EventTarget: event-custom/js/event-facade.js:533

Removes a bubble target

Parameters:

reset

(
  • [models]
  • [options]
)
chainable

Inherited from AttributeExtras but overwritten in app/js/lazy-model-list.js:187

Overrides ModelList#reset() to work with plain objects.

Parameters:

revive

(
  • [item]
)
Model | Model[] | Null

Defined in app/js/lazy-model-list.js:223

Revives an item (or all items) into a full Model instance. The item argument may be the index of an object in this list, an actual object (which must exist in the list), or may be omitted to revive all items in the list.

Once revived, Model instances are attached to this list and cached so that reviving them in the future doesn't require another Model instantiation. Use the free() method to explicitly uncache and detach a previously revived Model instance.

Note: Specifying an index rather than an object will be faster, since objects require an indexOf() lookup in order to retrieve the index.

Parameters:

  • [item] Number | Object optional

    Index of the object to revive, or the object itself. If an object, that object must exist in this list. If not specified, all items in the list will be revived and an array of models will be returned.

Returns:

Model | Model[] | Null:

Revived Model instance, array of revived Model instances, or null if the given index or object was not found in this list.

set

(
  • name
  • value
  • [opts]
)
Object chainable

Inherited from AttributeObservable but overwritten in attribute/js/AttributeCore.js:388

Sets the value of an attribute.

Parameters:

  • name String

    The name of the attribute. If the current value of the attribute is an Object, dot notation can be used to set the value of a property within the object (e.g. set("x.y.z", 5)).

  • value Any

    The value to set the attribute to.

  • [opts] Object optional

    Optional data providing the circumstances for the change.

Returns:

Object:

A reference to the host object.

setAttrs

(
  • attrs
  • [opts]
)
Object chainable

Inherited from AttributeObservable but overwritten in attribute/js/AttributeCore.js:747

Sets multiple attribute values.

Parameters:

  • attrs Object

    An object with attributes name/value pairs.

  • [opts] Object optional

    Optional data providing the circumstances for the change.

Returns:

Object:

A reference to the host object.

size

() Integer

Inherited from ArrayList: collection/js/arraylist.js:106

How many items are in this list?

Returns:

Integer:

Number of items in the list

some

(
  • callback
  • [thisObj]
)
Boolean

Inherited from ArrayList but overwritten in app/js/model-list.js:770

Available since 3.6.0

Executes the supplied function on each model in this list, and stops iterating if the callback returns true.

By default, the callback function's this object will refer to the model currently being iterated. Specify a thisObj to override the this object if desired.

Note: Iteration is performed on a copy of the internal array of models, so it's safe to delete a model from the list during iteration.

Parameters:

  • callback Function

    Function to execute on each model.

    • model Model

      Model instance.

    • index Number

      Index of the current model.

    • list ModelList

      The ModelList being iterated.

  • [thisObj] Object optional

    Object to use as the this object when executing the callback.

Returns:

Boolean:

true if the callback returned true for any item, false otherwise.

sort

(
  • [options]
)
chainable

Inherited from ModelList: app/js/model-list.js:807

Forcibly re-sorts the list.

Usually it shouldn't be necessary to call this method since the list maintains its sort order when items are added and removed, but if you change the comparator function after items are already in the list, you'll need to re-sort.

Parameters:

  • [options] Object optional

    Data to be mixed into the event facade of the reset event.

    • [silent=false] Boolean optional

      If true, no reset event will be fired.

    • [descending=false] Boolean optional

      If true, the sort is performed in descending order.

subscribe

() deprecated

Inherited from EventTarget: event-custom/js/event-target.js:346

Deprecated: use on

subscribe to an event

sync

(
  • action
  • [options]
  • [callback]
)

Inherited from ModelList: app/js/model-list.js:850

Override this method to provide a custom persistence implementation for this list. The default method just calls the callback without actually doing anything.

This method is called internally by load() and its implementations relies on the callback being called. This effectively means that when a callback is provided, it must be called at some point for the class to operate correctly.

Parameters:

  • action String

    Sync action to perform. May be one of the following:

    • create: Store a list of newly-created models for the first time.
    • delete: Delete a list of existing models.
    • read : Load a list of existing models.

    • update: Update a list of existing models.

      Currently, model lists only make use of the read action, but other actions may be used in future versions.

  • [options] Object optional

    Sync options. It's up to the custom sync implementation to determine what options it supports or requires, if any.

  • [callback] Function optional

    Called when the sync operation finishes.

    • err Error

      If an error occurred, this parameter will contain the error. If the sync operation succeeded, err will be falsy.

    • [response] Any optional

      The server's response. This value will be passed to the parse() method, which is expected to parse it and return an array of model attribute hashes.

toArray

() Model[]

Inherited from ModelList: app/js/model-list.js:888

Returns an array containing the models in this list.

Returns:

Model[]:

Array containing the models in this list.

toJSON

() Object[]

Inherited from ArrayList but overwritten in app/js/lazy-model-list.js:263

Overrides ModelList#toJSON() to use toArray() instead, since it's more efficient for LazyModelList.

Returns:

Object[]:

Array of objects.

toString

() String

Inherited from BaseCore: base/js/BaseCore.js:815

Default toString implementation. Provides the constructor NAME and the instance guid, if set.

Returns:

String:

String representation for this object

unsubscribe

() deprecated

Inherited from EventTarget: event-custom/js/event-target.js:469

Deprecated: use detach

detach a listener

unsubscribeAll

(
  • type
)
deprecated

Inherited from EventTarget: event-custom/js/event-target.js:490

Deprecated: use detachAll

Removes all listeners from the specified event. If the event type is not specified, all listeners from all hosted custom events will be removed.

Parameters:

  • type String

    The type, or name of the event

Properties

model

Model | String

Inherited from ModelList: app/js/model-list.js:142

The Model class or subclass of the models in this list.

The class specified here will be used to create model instances automatically based on attribute hashes passed to the add(), create(), and reset() methods.

You may specify the class as an actual class reference or as a string that resolves to a class reference at runtime (the latter can be useful if the specified class will be loaded lazily).

Default: Y.Model

name

String deprecated

Inherited from BaseCore: base/js/BaseCore.js:297

Deprecated: Use this.constructor.NAME

The string used to identify the class of this object.

Attributes

destroyed

Boolean readonly

Inherited from BaseCore: base/js/BaseCore.js:212

Flag indicating whether or not this object has been through the destroy lifecycle phase.

Default: false

Fires event destroyedChange

Fires when the value for the configuration attribute destroyed is changed. You can listen for the event using the on method if you wish to be notified before the attribute's value has changed, or using the after method if you wish to be notified after the attribute's value has changed.

Parameters:

  • e EventFacade
    An Event Facade object with the following attribute-specific properties added:
    • prevVal Any
      The value of the attribute, prior to it being set.
    • newVal Any
      The value the attribute is to be set to.
    • attrName String
      The name of the attribute being set.
    • subAttrName String
      If setting a property within the attribute's value, the name of the sub-attribute property being set.

initialized

Boolean readonly

Inherited from BaseCore: base/js/BaseCore.js:198

Flag indicating whether or not this object has been through the init lifecycle phase.

Default: false

Fires event initializedChange

Fires when the value for the configuration attribute initialized is changed. You can listen for the event using the on method if you wish to be notified before the attribute's value has changed, or using the after method if you wish to be notified after the attribute's value has changed.

Parameters:

  • e EventFacade
    An Event Facade object with the following attribute-specific properties added:
    • prevVal Any
      The value of the attribute, prior to it being set.
    • newVal Any
      The value the attribute is to be set to.
    • attrName String
      The name of the attribute being set.
    • subAttrName String
      If setting a property within the attribute's value, the name of the sub-attribute property being set.

Events

add

Inherited from ModelList: app/js/model-list.js:37

Fired when a model is added to the list.

Listen to the on phase of this event to be notified before a model is added to the list. Calling e.preventDefault() during the on phase will prevent the model from being added.

Listen to the after phase of this event to be notified after a model has been added to the list.

Event Payload:

  • model Model

    The model being added.

  • index Number

    The index at which the model will be added.

create

Inherited from ModelList: app/js/model-list.js:54

Available since 3.5.0

Fired when a model is created or updated via the create() method, but before the model is actually saved or added to the list. The add event will be fired after the model has been saved and added to the list.

Event Payload:

  • model Model

    The model being created/updated.

destroy

Inherited from BaseObservable: base/js/BaseObservable.js:163

Lifecycle event for the destroy phase, fired prior to destruction. Invoking the preventDefault method on the event object provided to subscribers will prevent destruction from proceeding.

Subscribers to the "after" moment of this event, will be notified after destruction is complete (and as a result cannot prevent destruction).

Event Payload:

error

Inherited from ModelList: app/js/model-list.js:65

Fired when an error occurs, such as when an attempt is made to add a duplicate model to the list, or when a sync layer response can't be parsed.

Event Payload:

  • error Any

    Error message, object, or exception generated by the error. Calling toString() on this should result in a meaningful error message.

  • src String

    Source of the error. May be one of the following (or any custom error source defined by a ModelList subclass):

    • add: Error while adding a model (probably because it's already in the list and can't be added again). The model in question will be provided as the model property on the event facade.
    • parse: An error parsing a JSON response. The response in question will be provided as the response property on the event facade.
    • remove: Error while removing a model (probably because it isn't in the list and can't be removed). The model in question will be provided as the model property on the event facade.

init

Inherited from BaseObservable: base/js/BaseObservable.js:62

Lifecycle event for the init phase, fired prior to initialization. Invoking the preventDefault() method on the event object provided to subscribers will prevent initialization from occuring.

Subscribers to the "after" momemt of this event, will be notified after initialization of the object is complete (and therefore cannot prevent initialization).

Event Payload:

  • e EventFacade

    Event object, with a cfg property which refers to the configuration object passed to the constructor.

load

Inherited from ModelList: app/js/model-list.js:87

Available since 3.5.0

Fired after models are loaded from a sync layer.

Event Payload:

  • parsed Object

    The parsed version of the sync layer's response to the load request.

  • response Mixed

    The sync layer's raw, unparsed response to the load request.

remove

Inherited from ModelList: app/js/model-list.js:99

Fired when a model is removed from the list.

Listen to the on phase of this event to be notified before a model is removed from the list. Calling e.preventDefault() during the on phase will prevent the model from being removed.

Listen to the after phase of this event to be notified after a model has been removed from the list.

Event Payload:

  • model Model

    The model being removed.

  • index Number

    The index of the model being removed.

reset

Inherited from ModelList: app/js/model-list.js:116

Fired when the list is completely reset via the reset() method or sorted via the sort() method.

Listen to the on phase of this event to be notified before the list is reset. Calling e.preventDefault() during the on phase will prevent the list from being reset.

Listen to the after phase of this event to be notified after the list has been reset.

Event Payload:

  • models Model[]

    Array of the list's new models after the reset.

  • src String

    Source of the event. May be either 'reset' or 'sort'.