Many classes have shortcut names used when creating (instantiating) a class with a
configuration object. The shortcut name is referred to as an alias (or xtype if the
class extends Ext.Component). The alias/xtype is listed next to the class name of
applicable classes for quick reference.
Framework classes or their members may be specified as private or protected. Else,
the class / member is public. Public, protected, and private are access
descriptors used to convey how and when the class or class member should be used.
Public classes and class members are available for use by any other class or application code and may be relied upon as a stable and persistent within major product versions. Public classes and members may safely be extended via a subclass.
Protected class members are stable public members intended to be used by the
owning class or its subclasses. Protected members may safely be extended via a subclass.
Private classes and class members are used internally by the framework and are not intended to be used by application developers. Private classes and members may change or be omitted from the framework at any time without notice and should not be relied upon in application logic.
static label next to the
method name. *See Static below.Below is an example class member that we can disect to show the syntax of a class member (the lookupComponent method as viewed from the Ext.button.Button class in this case).
Let's look at each part of the member row:
lookupComponent in this example)( item ) in this example)Ext.Component in this case). This may be omitted for methods that do not
return anything other than undefined or may display as multiple possible values
separated by a forward slash / signifying that what is returned may depend on the
results of the method call (i.e. a method may return a Component if a get method calls is
successful or false if unsuccessful which would be displayed as
Ext.Component/Boolean).PROTECTED in
this example - see the Flags section below)Ext.container.Container in this example). The source
class will be displayed as a blue link if the member originates from the current class
and gray if it is inherited from an ancestor or mixed-in class.view source in the example)item : Object in the example).undefined a "Returns" section
will note the type of class or object returned and a description (Ext.Component in the
example)Available since 3.4.0 - not pictured in
the example) just after the member descriptionDefaults to: false)The API documentation uses a number of flags to further commnicate the class member's function and intent. The label may be represented by a text label, an abbreviation, or an icon.
classInstance.method1().method2().etc();false is returned from
an event handler- Indicates a framework class
- A singleton framework class. *See the singleton flag for more information
- A component-type framework class (any class within the Ext JS framework that extends Ext.Component)
- Indicates that the class, member, or guide is new in the currently viewed version
- Indicates a class member of type config
- Indicates a class member of type property
- Indicates a class member of type
method
- Indicates a class member of type event
- Indicates a class member of type
theme variable
- Indicates a class member of type
theme mixin
- Indicates that the class, member, or guide is new in the currently viewed version
Just below the class name on an API doc page is a row of buttons corresponding to the types of members owned by the current class. Each button shows a count of members by type (this count is updated as filters are applied). Clicking the button will navigate you to that member section. Hovering over the member-type button will reveal a popup menu of all members of that type for quick navigation.
Getting and setter methods that correlate to a class config option will show up in the methods section as well as in the configs section of both the API doc and the member-type menus just beneath the config they work with. The getter and setter method documentation will be found in the config row for easy reference.
Your page history is kept in localstorage and displayed (using the available real estate) just below the top title bar. By default, the only search results shown are the pages matching the product / version you're currently viewing. You can expand what is displayed by clicking on the button on the right-hand side of the history bar and choosing the "All" radio option. This will show all recent pages in the history bar for all products / versions.
Within the history config menu you will also see a listing of your recent page visits. The results are filtered by the "Current Product / Version" and "All" radio options. Clicking on the button will clear the history bar as well as the history kept in local storage.
If "All" is selected in the history config menu the checkbox option for "Show product details in the history bar" will be enabled. When checked, the product/version for each historic page will show alongside the page name in the history bar. Hovering the cursor over the page names in the history bar will also show the product/version as a tooltip.
Both API docs and guides can be searched for using the search field at the top of the page.
On API doc pages there is also a filter input field that filters the member rows using the filter string. In addition to filtering by string you can filter the class members by access level, inheritance, and read only. This is done using the checkboxes at the top of the page.
The checkbox at the bottom of the API class navigation tree filters the class list to include or exclude private classes.
Clicking on an empty search field will show your last 10 searches for quick navigation.
Each API doc page (with the exception of Javascript primitives pages) has a menu view of metadata relating to that class. This metadata view will have one or more of the following:
Ext.button.Button class has an alternate class name of Ext.Button). Alternate class
names are commonly maintained for backward compatibility.Runnable examples (Fiddles) are expanded on a page by default. You can collapse and expand example code blocks individually using the arrow on the top-left of the code block. You can also toggle the collapse state of all examples using the toggle button on the top-right of the page. The toggle-all state will be remembered between page loads.
Class members are collapsed on a page by default. You can expand and collapse members using the arrow icon on the left of the member row or globally using the expand / collapse all toggle button top-right.
Viewing the docs on narrower screens or browsers will result in a view optimized for a smaller form factor. The primary differences between the desktop and "mobile" view are:
The class source can be viewed by clicking on the class name at the top of an API doc page. The source for class members can be viewed by clicking on the "view source" link on the right-hand side of the member row.
Ext.data.ErrorCollection
Ext.data.operation.*
Ext.data.field.*
Ext.data.validator.Validator
Ext.data.schema.Schema
Ext.data.identifier.Generator
Ext.data.identifier.Sequential
A Model or Entity represents some object that your application manages. For example, one might define a Model for Users, Products, Cars, or other real-world object that we want to model in the system. Models are used by Ext.data.Store, which are in turn used by many of the data-bound components in Ext.
Models are defined as a set of fields and any arbitrary methods and properties relevant to the model. For example:
Ext.define('User', {
extend: 'Ext.data.Model',
fields: [
{name: 'name', type: 'string'},
{name: 'age', type: 'int', convert: null},
{name: 'phone', type: 'string'},
{name: 'alive', type: 'boolean', defaultValue: true, convert: null}
],
changeName: function() {
var oldName = this.get('name'),
newName = oldName + " The Barbarian";
this.set('name', newName);
}
});
Now we can create instances of our User model and call any model logic we defined:
var user = Ext.create('User', {
id : 'ABCD12345',
name : 'Conan',
age : 24,
phone: '555-555-5555'
});
user.changeName();
user.get('name'); //returns "Conan The Barbarian"
By default, the built in field types such as number and boolean coerce string values
in the raw data by virtue of their Ext.data.field.Field#method-convert method.
When the server can be relied upon to send data in a format that does not need to be
converted, disabling this can improve performance. The Ext.data.reader.Json
and Ext.data.reader.Array readers are likely candidates for this
optimization. To disable field conversions you simply specify null for the field's
convert config.
idPropertyA Model definition always has an identifying field which should yield a unique key for each instance. By default, a field named "id" will be created with a mapping of "id". This happens because of the default idProperty provided in Model definitions.
To alter which field is the identifying field, use the idProperty config.
Models have built-in support for field validators. Validators are added to models as in the follow example:
Ext.define('User', {
extend: 'Ext.data.Model',
fields: [
{ name: 'name', type: 'string' },
{ name: 'age', type: 'int' },
{ name: 'phone', type: 'string' },
{ name: 'gender', type: 'string' },
{ name: 'username', type: 'string' },
{ name: 'alive', type: 'boolean', defaultValue: true }
],
validators: {
age: 'presence',
name: { type: 'length', min: 2 },
gender: { type: 'inclusion', list: ['Male', 'Female'] },
username: [
{ type: 'exclusion', list: ['Admin', 'Operator'] },
{ type: 'format', matcher: /([a-z]+)[0-9]{2,3}/i }
]
}
});
The derived type of Ext.data.field.Field can also provide validation. If validators
need to be duplicated on multiple fields, instead consider creating a custom field type.
The results of the validators can be retrieved via the "associated" validation record:
var instance = Ext.create('User', {
name: 'Ed',
gender: 'Male',
username: 'edspencer'
});
var validation = instance.getValidation();
The returned object is an instance of Ext.data.Validation and has as its fields the
result of the field validators. The validation object is "dirty" if there are one or
more validation errors present.
This record is also available when using data binding as a "pseudo-association" called "validation". This pseudo-association can be hidden by an explicitly declared association by the same name (for compatibility reasons), but doing so is not recommended.
The Ext.Component#modelValidation config can be used to enable automatic
binding from the "validation" of a record to the form fields that may be bound to its
values.
Models often have associations with other Models. These associations can be defined by fields (often called "foreign keys") or by other data such as a many-to-many (or "matrix"). See Ext.data.schema.Association for information about configuring and using associations.
Models are great for representing types of data and relationships, but sooner or later we're going to want to load or save that data somewhere. All loading and saving of data is handled via a Ext.data.proxy.Proxy, which can be set directly on the Model:
Ext.define('User', {
extend: 'Ext.data.Model',
fields: ['id', 'name', 'email'],
proxy: {
type: 'rest',
url : '/users'
}
});
Here we've set up a Ext.data.proxy.Rest, which knows how to load and save data to and from a RESTful backend. Let's see how this works:
var user = Ext.create('User', {name: 'Ed Spencer', email: 'ed@sencha.com'});
user.save(); //POST /users
Calling save on the new Model instance tells the configured RestProxy that we wish to persist this Model's data onto our server. RestProxy figures out that this Model hasn't been saved before because it doesn't have an id, and performs the appropriate action - in this case issuing a POST request to the url we configured (/users). We configure any Proxy on any Model and always follow this API - see Ext.data.proxy.Proxy for a full list.
Loading data via the Proxy is accomplished with the static load method:
//Uses the configured RestProxy to make a GET request to /users/123
User.load(123, {
success: function(user) {
console.log(user.getId()); //logs 123
}
});
Models can also be updated and destroyed easily:
//the user Model we loaded in the last snippet:
user.set('name', 'Edward Spencer');
//tells the Proxy to save the Model. In this case it will perform a PUT request to /users/123 as this Model already has an id
user.save({
success: function() {
console.log('The User was updated');
}
});
//tells the Proxy to destroy the Model. Performs a DELETE request to /users/123
user.erase({
success: function() {
console.log('The User was destroyed!');
}
});
By default, the model ID is specified in an HTTP parameter named id. To change the
name of this parameter use the Proxy's idParam
configuration.
Parameters for other commonly passed values such as page number or start row may also be configured.
It is very common to want to load a set of Model instances to be displayed and manipulated in the UI. We do this by creating a Ext.data.Store:
var store = Ext.create('Ext.data.Store', {
model: 'User'
});
//uses the Proxy we set up on Model to load the Store data
store.load();
A Store is just a collection of Model instances - usually loaded from a server somewhere. Store can also maintain a set of added, updated and removed Model instances to be synchronized with the server via the Proxy. See the Ext.data.Store for more information on Stores.
An array of Ext.data.schema.Association for this model.
For further documentation, see Ext.data.schema.Association.
Deprecated since version 6.2.0
Use `hasMany/hasOne/belongsTo`.
One or more Ext.data.schema.BelongsTo associations for this model.
The name of the property a server will use to send back a client-generated id in a
create or update Ext.data.operation.Operation.
If specified, this property cannot have the same name as any other field.
For example:
Ext.define('Person', {
idProperty: 'id', // this is the default value (for clarity)
clientIdProperty: 'clientId',
identifier: 'negative', // to generate -1, -2 etc on the client
fields: [ 'name' ]
});
var person = new Person({
// no id provided, so -1 is generated
name: 'Clark Kent'
});
The server is given this data during the create:
{
id: -1,
name: 'Clark Kent'
}
The server allocates a real id and responds like so:
{
id: 427,
clientId: -1
}
This property is most useful when creating multiple entities in a single call to
the server in a Ext.data.operation.Create. Alternatively,
the server could respond with records that correspond one-to-one to those sent in
the operation.
For example the client could send a create with this data:
[ { id: -1, name: 'Clark Kent' },
{ id: -2, name: 'Peter Parker' },
{ id: -3, name: 'Bruce Banner' } ]
And the server could respond in the same order:
[ { id: 427 }, // updates id = -1
{ id: 428 }, // updates id = -2
{ id: 429 } ] // updates id = -3
Or using clientIdProperty the server could respond in arbitrary order:
[ { id: 427, clientId: -3 },
{ id: 428, clientId: -1 },
{ id: 429, clientId: -2 } ]
IMPORTANT: When upgrading from previous versions be aware that this property
used to perform the role of Ext.data.writer.Writer#clientIdProperty as
well as that described above. To continue send a client-generated id as other than
the idProperty, set clientIdProperty on the writer. A better solution, however,
is most likely a properly configured identifier as that would work better with
associations.
Defaults to:
null
Set to false to prevent any converters from being called on fields specified in
a set operation.
Note: Setting the config to false will only prevent the convert / calculate
call when the set fieldName param matches the field's name. In the
following example the calls to set salary will not execute the convert method
on set while the calls to set vested will execute the convert method on the
initial read as well as on set.
Example model definition:
Ext.define('MyApp.model.Employee', {
extend: 'Ext.data.Model',
fields: ['yearsOfService', {
name: 'salary',
convert: function (val) {
var startingBonus = val * .1;
return val + startingBonus;
}
}, {
name: 'vested',
convert: function (val, record) {
return record.get('yearsOfService') >= 4;
},
depends: 'yearsOfService'
}],
convertOnSet: false
});
var tina = Ext.create('MyApp.model.Employee', {
salary: 50000,
yearsOfService: 3
});
console.log(tina.get('salary')); // logs 55000
console.log(tina.get('vested')); // logs false
tina.set({
salary: 60000,
yearsOfService: 4
});
console.log(tina.get('salary')); // logs 60000
console.log(tina.get('vested')); // logs true
Defaults to:
true
An Array of Ext.data.field.Field config objects, simply the field
name, or a mix of config objects and strings.
If just a name is given, the field type defaults to auto.
In a Ext.data.field.Field config object you may pass the alias of
the Ext.data.field.* type using the type config option.
// two fields are set:
// - an 'auto' field with a name of 'firstName'
// - and an Ext.data.field.Integer field with a name of 'age'
fields: ['firstName', {
type: 'int',
name: 'age'
}]
Fields will automatically be created at read time for any for any keys in the
data passed to the Model's proxy's
Ext.data.reader.Reader whose name is not explicitly configured in
the fields config.
Extending a Model class will inherit all the fields from the superclass /
ancestor classes.
Get the fields array for this model.
The fields array
One or more Ext.data.schema.HasMany associations for this model.
One or more Ext.data.schema.HasOne associations for this model.
The id generator to use for this model. The identifier generates values for the
idProperty when no value is given. Records with client-side generated
values for idProperty are called phantom records since they are
not yet known to the server.
This can be overridden at the model level to provide a custom generator for a model. The simplest form of this would be:
Ext.define('MyApp.data.MyModel', {
extend: 'Ext.data.Model',
requires: ['Ext.data.identifier.Sequential'],
identifier: 'sequential',
...
});
The above would generate Ext.data.identifier.Sequential id's such as 1, 2, 3 etc..
Another useful id generator is Ext.data.identifier.Uuid:
Ext.define('MyApp.data.MyModel', {
extend: 'Ext.data.Model',
requires: ['Ext.data.identifier.Uuid'],
identifier: 'uuid',
...
});
An id generator can also be further configured:
Ext.define('MyApp.data.MyModel', {
extend: 'Ext.data.Model',
identifier: {
type: 'sequential',
seed: 1000,
prefix: 'ID_'
}
});
The above would generate id's such as ID_1000, ID_1001, ID_1002 etc..
If multiple models share an id space, a single generator can be shared:
Ext.define('MyApp.data.MyModelX', {
extend: 'Ext.data.Model',
identifier: {
type: 'sequential',
id: 'xy'
}
});
Ext.define('MyApp.data.MyModelY', {
extend: 'Ext.data.Model',
identifier: {
type: 'sequential',
id: 'xy'
}
});
For more complex, shared id generators, a custom generator is the best approach. See Ext.data.identifier.Generator for details on creating custom id generators.
Defaults to:
null
The name of the field treated as this Model's unique id.
If changing the idProperty in a subclass, the generated id field will replace the one generated by the superclass, for example;
Ext.define('Super', {
extend: 'Ext.data.Model',
fields: ['name']
});
Ext.define('Sub', {
extend: 'Super',
idProperty: 'customId'
});
var fields = Super.getFields();
// Has 2 fields, "name" & "id"
console.log(fields[0].name, fields[1].name, fields.length);
fields = Sub.getFields();
// Has 2 fields, "name" & "customId", "id" is replaced
console.log(fields[0].name, fields[1].name, fields.length);
The data values for this field must be unique or there will be id value collisions in the Ext.data.Store.
Defaults to:
'id'
A config object for a Ext.data.schema.ManyToMany association. See the class description for Ext.data.schema.ManyToMany for configuration examples.
Defaults to:
null
The Ext.data.proxy.Proxy to use for this class.
Defaults to:
undefined
Returns the configured Proxy for this Model.
The proxy
The name of the Ext.data.schema.Schema to which this entity and its
associations belong. For details on custom schemas see Ext.data.schema.Schema.
Defaults to:
'default'
If specified this property is used to concatenate multiple errors for each field
as reported by the validators.
Defaults to:
null
If specified, this is the name of the property that contains the entity "version". The version property is used to manage a long-running transaction and allows the detection of simultaneous modification.
The way a version property is used is that the client receives the version as it would any other entity property. When saving an entity, this property is always included in the request and the server uses the value in a "conditional update". If the current version of the entity on the server matches the version property sent by the client, the update is allowed. Otherwise, the update fails.
On successful update, both the client and server increment the version. This is done on the server in the conditional update and on the client when it receives a success on its update request.
Defaults to:
null
The value true causes config values to be stored on instances using a
property name prefixed with an underscore ("_") character. A value of false
stores config values as properties using their exact name (no prefix).
Defaults to:
true
Available since: 5.0.0
The value true instructs the initConfig method to only honor values for
properties declared in the config block of a class. When false, properties
that are not declared in a config block will be placed on the instance.
Defaults to:
true
Available since: 5.0.0
Setting this property to false will prevent nulling object references
on a Class instance after destruction. Setting this to "async" will delay
the clearing for approx 50ms.
Defaults to:
true
Available since: 6.2.0
Setting this property to true will result in setting the object's
prototype to null after the destruction sequence is fully completed.
After that, most attempts at calling methods on the object instance
will result in "method not defined" exception. This can be very helpful
with tracking down otherwise hard to find bugs like runaway Ajax requests,
timed functions not cleared on destruction, etc.
Note that this option can only work in browsers that support Object.setPrototypeOf
method, and is only available in debugging mode.
Defaults to:
false
Available since: 6.2.0
This value is initially "R" or "C" indicating the initial CRUD state. As the
record changes and the various joined parties (stores, sessions, etc.) are notified
this value is updated prior to these calls. In other words, the joined parties
are notified after the crudState is updated. This means that the crudState
property may be briefly out of sync with underlying changes if this state is used
outside of these notifications.
The possible states have these meanings:
phantom) state.modified (dirty) state.dropped state.Defaults to:
'R'
Available since: 6.2.0
This value is initially null indicating there is no previous CRUD state. As the
record changes and the various joined parties (stores, sessions, etc.) are notified
this value is updated for the subsequent calls. In other words, the joined parties
are notified and then crudStateWas is modified for the next update.
The value of this property has the same meaning as crudState.
Defaults to:
null
Available since: 6.2.0
This property is set to true after the destroy method is called.
Defaults to:
false
True if this record is pending delete on the server. This is set by the drop
method and transmitted to the server by the save method.
Defaults to:
false
Internal flag used to track whether or not the model instance is currently being edited.
Defaults to:
false
The short name of this entity class. This name is derived from the namespace of
the associated schema and this class name. By default, a class is not given a
shortened name.
All entities in a given schema must have a unique entityName.
For more details see "Relative Naming" in Ext.data.schema.Schema.
True if this record has been erased on the server. This flag is set of the erase
method.
Defaults to:
false
This property is indexed by field name and contains the ordinal of that field. The
ordinal often has meaning to servers and is derived based on the position in the
fields array.
This can be used like so:
Ext.define('MyApp.models.User', {
extend: 'Ext.data.Model',
fields: [
{ name: 'name' }
]
});
var nameOrdinal = MyApp.models.User.fieldOrdinals.name;
// or, if you have an instance:
var user = new MyApp.models.User();
var nameOrdinal = user.fieldOrdinals.name;
An array fields defined for this Model (including fields defined in superclasses) in ordinal order; that is in declaration order.
This property is incremented on each modification of a record.
Defaults to:
1
Available since: 5.0.0
This property is set to true during the call to initConfig.
Defaults to:
false
Available since: 5.0.0
This property is set to true if this instance is the first of its class.
Defaults to:
false
Available since: 5.0.0
This value is true and is used to identify plain objects from instances of
a defined class.
Defaults to:
true
A hash of field values which holds the initial values of fields before a set of edits are committed.
Called when the model id is changed.
Defaults to:
Ext.privateFn
id : Object
The new id.
oldId : Object
The old id.
True when the record does not yet exist in a server-side database. Any record which
has a real database identity set as its idProperty is NOT a phantom -- it's real.
Defaults to:
false
This object is similar to the modified object except it holds the data values as
they were prior to the most recent change.
Defaults to:
undefined
The Ext.data.schema.Schema to which this entity and its associations belong.
Defaults to:
'default'
Get the reference to the current class from which this object was instantiated. Unlike Ext.Base#statics,
this.self is scope-dependent and it's meant to be used for dynamic inheritance. See Ext.Base#statics
for a detailed comparison
Ext.define('My.Cat', {
statics: {
speciesName: 'Cat' // My.Cat.speciesName = 'Cat'
},
constructor: function() {
alert(this.self.speciesName); // dependent on 'this'
},
clone: function() {
return new this.self();
}
});
Ext.define('My.SnowLeopard', {
extend: 'My.Cat',
statics: {
speciesName: 'Snow Leopard' // My.SnowLeopard.speciesName = 'Snow Leopard'
}
});
var cat = new My.Cat(); // alerts 'Cat'
var snowLeopard = new My.SnowLeopard(); // alerts 'Snow Leopard'
var clone = snowLeopard.clone();
alert(Ext.getClassName(clone)); // alerts 'My.SnowLeopard'
Defaults to:
Base
The Ext.data.Store to which this instance belongs.
Note: If this instance is bound to multiple stores, this property will reference only the first.
Defaults to:
owner
Defaults to:
'commit'
Deprecated since version 5.0
Use the string `"commit"` directly.
The update operation of type 'commit'. Used by the
Store.update event.
The default proxy to use for instances of this Model when no proxy is configured on the instance. When specified, the model will use this proxy instead of requesting one from the Ext.data.Session.
Can be a string "type", or a Ext.data.proxy.Proxy config object.
This proxy is not inherited by subclasses.
Defaults to:
'memory'
Defaults to:
'edit'
Deprecated since version 5.0
Use the string `"edit"` directly.
The update operation of type 'edit'. Used by the
Store.update event.
Defaults to:
'reject'
Deprecated since version 5.0
Use the string `"reject"` directly.
The update operation of type 'reject'. Used by the
Store.update event.
This method applies a versioned, deprecation declaration to this class. This
is typically called by the deprecated config.
deprecations : Object
Begins an edit. While in edit mode, no events (e.g.. the update event) are
relayed to the containing store. When an edit has begun, it must be followed by
either endEdit or cancelEdit.
Helper function used by afterEdit, afterReject and afterCommit. Calls the given
method on the Ext.data.Store that this instance has joined, if any.
The store function will always be called with the model instance as its single
argument. If this model is joined to a Ext.data.NodeStore, then this method calls
the given method on the NodeStore and the associated Ext.data.TreeStore.
funcName : String
The name function to call on each store.
args : Array (optional)
The arguments to pass to the method. This instance is always inserted as the first argument.
Call the original method that was previously overridden with Ext.Base#override
Ext.define('My.Cat', {
constructor: function() {
alert("I'm a cat!");
}
});
My.Cat.override({
constructor: function() {
alert("I'm going to be a cat!");
this.callOverridden();
alert("Meeeeoooowwww");
}
});
var kitty = new My.Cat(); // alerts "I'm going to be a cat!"
// alerts "I'm a cat!"
// alerts "Meeeeoooowwww"
args : Array/Arguments
The arguments, either an array or the arguments object
from the current method, for example: this.callOverridden(arguments)
Returns the result of calling the overridden method
Deprecated since version 4.1.0
Use method-callParent instead.
Call the "parent" method of the current method. That is the method previously overridden by derivation or by an override (see Ext#define).
Ext.define('My.Base', {
constructor: function (x) {
this.x = x;
},
statics: {
method: function (x) {
return x;
}
}
});
Ext.define('My.Derived', {
extend: 'My.Base',
constructor: function () {
this.callParent([21]);
}
});
var obj = new My.Derived();
alert(obj.x); // alerts 21
This can be used with an override as follows:
Ext.define('My.DerivedOverride', {
override: 'My.Derived',
constructor: function (x) {
this.callParent([x*2]); // calls original My.Derived constructor
}
});
var obj = new My.Derived();
alert(obj.x); // now alerts 42
This also works with static and private methods.
Ext.define('My.Derived2', {
extend: 'My.Base',
// privates: {
statics: {
method: function (x) {
return this.callParent([x*2]); // calls My.Base.method
}
}
});
alert(My.Base.method(10)); // alerts 10
alert(My.Derived2.method(10)); // alerts 20
Lastly, it also works with overridden static methods.
Ext.define('My.Derived2Override', {
override: 'My.Derived2',
// privates: {
statics: {
method: function (x) {
return this.callParent([x*2]); // calls My.Derived2.method
}
}
});
alert(My.Derived2.method(10); // now alerts 40
To override a method and replace it and also call the superclass method, use method-callSuper. This is often done to patch a method to fix a bug.
args : Array/Arguments
The arguments, either an array or the arguments object
from the current method, for example: this.callParent(arguments)
Returns the result of calling the parent method
This method is used by an override to call the superclass method but bypass any overridden method. This is often done to "patch" a method that contains a bug but for whatever reason cannot be fixed directly.
Consider:
Ext.define('Ext.some.Class', {
method: function () {
console.log('Good');
}
});
Ext.define('Ext.some.DerivedClass', {
extend: 'Ext.some.Class',
method: function () {
console.log('Bad');
// ... logic but with a bug ...
this.callParent();
}
});
To patch the bug in Ext.some.DerivedClass.method, the typical solution is to create an
override:
Ext.define('App.patches.DerivedClass', {
override: 'Ext.some.DerivedClass',
method: function () {
console.log('Fixed');
// ... logic but with bug fixed ...
this.callSuper();
}
});
The patch method cannot use method-callParent to call the superclass
method since that would call the overridden method containing the bug. In
other words, the above patch would only produce "Fixed" then "Good" in the
console log, whereas, using callParent would produce "Fixed" then "Bad"
then "Good".
args : Array/Arguments
The arguments, either an array or the arguments object
from the current method, for example: this.callSuper(arguments)
Returns the result of calling the superclass method
Creates a clone of this record. States like dropped, phantom and dirty are
all preserved in the cloned record.
session : Ext.data.Session (optional)
The session to which the new record belongs.
The cloned record.
Usually called by the Ext.data.Store which owns the model instance. Commits all changes made to the instance since either creation or the last commit operation.
Developers should subscribe to the Ext.data.Store#event-update event to have their code notified of commit operations.
silent : Boolean (optional)
Pass true to skip notification of the owning store of the change.
Defaults to: false
modifiedFieldNames : String[] (optional)
Array of field names changed during sync with server if known.
Omit or pass null if unknown. An empty array means that it is known that no fields were modified
by the server's response.
Defaults to false.
Creates a clean copy of this record. The returned record will not consider any its fields as modified.
To generate a phantom instance with a new id pass null:
var rec = record.copy(null); // clone the record but no id (one is generated)
newId : String (optional)
A new id, defaults to the id of the instance being copied.
See idProperty.
session : Ext.data.Session (optional)
The session to which the new record belongs.
Copies data from the passed record into this record. If the passed record is undefined, does nothing.
If this is a phantom record (represented only in the client, with no corresponding database entry), and the source record is not a phantom, then this record acquires the id of the source record.
sourceRecord : Ext.data.Model
The record to copy data from.
The names of the fields which changed value.
This method is called to cleanup an object and its resources. After calling this method, the object should not be used any further in any way, including access to its methods and properties.
To prevent potential memory leaks, all object references will be nulled
at the end of destruction sequence, unless clearPropertiesOnDestroy
is set to false.
Marks this record as dropped and waiting to be deleted on the server. When a
record is dropped, it is automatically removed from all association stores and
any child records associated to this record are also dropped (a "cascade delete")
depending on the cascade parameter.
Available since: 5.0.0
cascade : Boolean (optional)
Pass false to disable the cascade to drop child
records.
Defaults to: true
Ends an edit. If any data was modified, the containing store is notified
(ie, the store's update event will fire).
silent : Boolean (optional)
True to not notify any stores of the change.
modifiedFieldNames : String[] (optional)
Array of field names changed during edit.
Destroys the model using the configured proxy. The erase action is asynchronous. Any processing of the erased record should be done in a callback.
Ext.define('MyApp.model.User', {
extend: 'Ext.data.Model',
fields: [
{name: 'id', type: 'int'},
{name: 'name', type: 'string'}
],
proxy: {
type: 'ajax',
url: 'server.url'
}
});
var user = new MyApp.model.User({
name: 'Foo'
});
// pass the phantom record data to the server to be saved
user.save({
success: function(record, operation) {
// do something if the save succeeded
// erase the created record
record.erase({
failure: function(record, operation) {
// do something if the erase failed
},
success: function(record, operation) {
// do something if the erase succeeded
},
callback: function(record, operation, success) {
// do something if the erase succeeded or failed
}
});
}
});
NOTE: If a phantom record is erased it will not be processed via the
proxy. However, any passed success or callback functions will be called.
The options param is an Ext.data.operation.Destroy config object containing success, failure and callback functions, plus optional scope.
options : Object
Options to pass to the proxy.
The destroy operation
Returns the value of the given field.
fieldName : String
The name of the field.
The value of the specified field.
Gets all of the data from this Models loaded associations. It does this recursively. For example if we have a User which hasMany Orders, and each Order hasMany OrderItems, it will return an object like this:
{
orders: [
{
id: 123,
status: 'shipped',
orderItems: [
...
]
}
]
}
result : Object (optional)
The object on to which the associations will be added. If no object is passed one is created. This object is then returned.
options : Boolean/Object (optional)
An object containing options describing the data desired.
associated : Boolean (optional)
Pass true to include associated data from
other associated records.
Defaults to:
true
changes : Boolean (optional)
Pass true to only include fields that
have been modified. Note that field modifications are only tracked for fields that
are not declared with persist set to false. In other words, only persistent
fields have changes tracked so passing true for this means options.persist is
redundant.
Defaults to:
false
critical : Boolean (optional)
Pass true to include fields set as critical.
This is only meaningful when options.changes is true since critical fields may
not have been modified.
persist : Boolean (optional)
Pass true to only return persistent fields.
This is implied when options.changes is set to true.
serialize : Boolean (optional)
Pass true to invoke the serialize
method on the returned fields.
Defaults to:
false
The nested data set for the Model's loaded associations.
Gets an object of only the fields that have been modified since this record was
created or committed. Only persistent fields are tracked in the modified set so
this method will only return changes to persistent fields.
For more control over the returned data, see getData.
Returns a specified config property value. If the name parameter is not passed, all current configuration options will be returned as key value pairs.
name : String (optional)
The name of the config property to get.
peek : Boolean (optional)
true to peek at the raw value without calling the getter.
Defaults to: false
The config property value.
Returns the array of fields that are declared as critical (must always send).
Gets all values for each field in this model and returns an object containing the
current data. This can be tuned by passing an options object with various
properties describing the desired result. Passing true simply returns all fields
and all associated record data.
options : Boolean/Object (optional)
An object containing options describing the data
desired. If true is passed it is treated as an object with associated set to
true.
associated : Boolean (optional)
Pass true to include associated data.
This is equivalent to pass true as the only argument. See getAssociatedData.
Defaults to:
false
changes : Boolean (optional)
Pass true to only include fields that
have been modified. Note that field modifications are only tracked for fields that
are not declared with persist set to false. In other words, only persistent
fields have changes tracked so passing true for this means options.persist is
redundant.
Defaults to:
false
critical : Boolean (optional)
Pass true to include fields set as critical.
This is only meaningful when options.changes is true since critical fields may
not have been modified.
persist : Boolean (optional)
Pass true to only return persistent fields.
This is implied when options.changes is set to true.
serialize : Boolean (optional)
Pass true to invoke the serialize
method on the returned fields.
Defaults to:
false
An object containing all the values in this model.
Returns the unique ID allocated to this model instance as defined by idProperty.
The id
Returns the initial configuration passed to the constructor when instantiating this class.
Given this example Ext.button.Button definition and instance:
Ext.define('MyApp.view.Button', {
extend: 'Ext.button.Button',
xtype: 'mybutton',
scale: 'large',
enableToggle: true
});
var btn = Ext.create({
xtype: 'mybutton',
renderTo: Ext.getBody(),
text: 'Test Button'
});
Calling btn.getInitialConfig() would return an object including the config
options passed to the create method:
xtype: 'mybutton',
renderTo: // The document body itself
text: 'Test Button'
Calling btn.getInitialConfig('text')returns 'Test Button'.
name : String (optional)
Name of the config option to return.
The full config object or a single config value
when name parameter specified.
Returns the original value of a modified field. If there is no modified value,
undefined will be return. Also see isModified.
fieldName : String
The name of the field for which to return the original value.
modified
Gets the names of all the fields that were modified during an edit.
old : Object (optional)
The saved data from beginEdit.
The array of modified field names.
Return a unique observable ID. Model is not observable but tree nodes (Ext.data.NodeInterface) are, so
they must be globally unique within the observableType.
This method returns the value of a field given its name prior to its most recent change.
fieldName : String
The field's name.
The value of the given field prior to its current value. undefined
if there is no previous value;
Returns the array of fields that are declared as non-persist or "transient".
Available since: 5.0.0
Returns the Ext.data.Validation record holding the results of this record's
validators. This record is lazily created on first request and is then kept on
this record to be updated later.
See the class description for more about validators.
Available since: 5.0.0
refresh : Boolean (optional)
Pass false to not call the refresh method on the
validation instance prior to returning it. Pass true to force a refresh of the
validation instance. By default the returned record is only refreshed if changes
have been made to this record.
The Validation record for this record.
Initialize configuration for this class. a typical example:
Ext.define('My.awesome.Class', {
// The default config
config: {
name: 'Awesome',
isAwesome: true
},
constructor: function(config) {
this.initConfig(config);
}
});
var awesome = new My.awesome.Class({
name: 'Super Awesome'
});
alert(awesome.getName()); // 'Super Awesome'
instanceConfig : Object
this
Checks if two values are equal, taking into account certain special factors, for example dates.
lhs : Object
The first value.
rhs : Object
The second value.
field : String/Ext.data.field.Field (optional)
The field name or instance.
True if the values are equal.
Checks whether this model is loading data from the proxy.
true if in a loading state.
Returns true if the passed field name has been modified since the load or last commit.
fieldName : String
The field's name.
Checks if the model is valid. See getValidation.
True if the model is valid.
Tells this model instance that an observer is looking at it.
owner : Ext.data.Store
The store or other owner object to which this model has been added.
Adds a "destroyable" object to an internal list of objects that will be destroyed
when this instance is destroyed (via destroy).
name : String
value : Object
The value passed.
Loads the model instance using the configured proxy. The load action is asynchronous. Any processing of the loaded record should be done in a callback.
Ext.define('MyApp.model.User', {
extend: 'Ext.data.Model',
fields: [
{name: 'id', type: 'int'},
{name: 'name', type: 'string'}
],
proxy: {
type: 'ajax',
url: 'server.url'
}
});
var user = new MyApp.model.User();
user.load({
scope: this,
failure: function(record, operation) {
// do something if the load failed
},
success: function(record, operation) {
// do something if the load succeeded
},
callback: function(record, operation, success) {
// do something whether the load succeeded or failed
}
});
The options param is an Ext.data.operation.Read config object containing success, failure and callback functions, plus optional scope.
options : Object (optional)
Options to pass to the proxy.
success : Function
A function to be called when the model is processed by the proxy successfully. The callback is passed the following parameters:
record : Ext.data.Model
The record.
operation : Ext.data.operation.Operation
The operation.
failure : Function
A function to be called when the model is unable to be processed by the server. The callback is passed the following parameters:
record : Ext.data.Model
The record.
operation : Ext.data.operation.Operation
The operation.
callback : Function
A function to be called whether the proxy transaction was successful or not. The callback is passed the following parameters:
record : Ext.data.Model
The record.
operation : Ext.data.operation.Operation
The operation.
success : Boolean
true if the operation was successful.
scope : Object
The scope in which to execute the callback functions. Defaults to the model instance.
The read operation.
Called when an associated record instance has been set.
record : Ext.data.Model
The record.
role : Ext.data.schema.Role
The role.
This method is called by the Ext.data.reader.Reader after loading a model from the server. This is after processing any inline associations that are available.
This is a template method. a hook into the functionality of this class. Feel free to override it in child classes.
Usually called by the Ext.data.Store to which this model instance has been joined. Rejects all changes made to the model instance since either creation, or the last commit operation. Modified fields are reverted to their original values.
Developers should subscribe to the Ext.data.Store#event-update event to have their code notified of reject operations.
silent : Boolean (optional)
true to skip notification of the owning store of the change.
Defaults to: false
Saves the model instance using the configured proxy. The save action is asynchronous. Any processing of the saved record should be done in a callback.
Create example:
Ext.define('MyApp.model.User', {
extend: 'Ext.data.Model',
fields: [
{name: 'id', type: 'int'},
{name: 'name', type: 'string'}
],
proxy: {
type: 'ajax',
url: 'server.url'
}
});
var user = new MyApp.model.User({
name: 'Foo'
});
// pass the phantom record data to the server to be saved
user.save({
failure: function(record, operation) {
// do something if the save failed
},
success: function(record, operation) {
// do something if the save succeeded
},
callback: function(record, operation, success) {
// do something whether the save succeeded or failed
}
});
The response from a create operation should include the ID for the newly created record:
// sample response
{
success: true,
id: 1
}
// the id may be nested if the proxy's reader has a rootProperty config
Ext.define('MyApp.model.User', {
extend: 'Ext.data.Model',
proxy: {
type: 'ajax',
url: 'server.url',
reader: {
type: 'ajax',
rootProperty: 'data'
}
}
});
// sample nested response
{
success: true,
data: {
id: 1
}
}
(Create + ) Update example:
Ext.define('MyApp.model.User', {
extend: 'Ext.data.Model',
fields: [
{name: 'id', type: 'int'},
{name: 'name', type: 'string'}
],
proxy: {
type: 'ajax',
url: 'server.url'
}
});
var user = new MyApp.model.User({
name: 'Foo'
});
user.save({
success: function(record, operation) {
record.set('name', 'Bar');
// updates the remote record via the proxy
record.save();
}
});
(Create + ) Destroy example - see also erase:
Ext.define('MyApp.model.User', {
extend: 'Ext.data.Model',
fields: [
{name: 'id', type: 'int'},
{name: 'name', type: 'string'}
],
proxy: {
type: 'ajax',
url: 'server.url'
}
});
var user = new MyApp.model.User({
name: 'Foo'
});
user.save({
success: function(record, operation) {
record.drop();
// destroys the remote record via the proxy
record.save();
}
});
NOTE: If a phantom record is dropped and subsequently
saved it will not be processed via the proxy. However, any passed success
or callback functions will be called.
The options param is an Operation config object containing success, failure and callback functions, plus optional scope. The type of Operation depends on the state of the model being saved.
options : Object
Options to pass to the proxy.
The operation instance for saving this model. The type of operation returned depends on the model state at the time of the action.
Sets the given field to the given value. For example:
record.set('name', 'value');
This method can also be passed an object containing multiple values to set at once. For example:
record.set({
name: 'value',
age: 42
});
The following store events are fired when the modified record belongs to a store:
fieldName : String/Object
The field to set, or an object containing key/value pairs.
newValue : Object
The value for the field (if fieldName is a string).
options : Object (optional)
Options for governing this update.
convert : Boolean (optional)
Set to false to prevent any converters from
being called during the set operation. This may be useful when setting a large bunch of
raw values.
Defaults to:
true
dirty : Boolean (optional)
Pass false if the field values are to be
understood as non-dirty (fresh from the server). When true, this change will be
reflected in the modified collection.
Defaults to:
true
commit : Boolean (optional)
Pass true to call the commit method
after setting fields. If this option is passed, the usual after change processing will
be bypassed. Commit will be called even if there are no field changes.
Defaults to:
false
silent : Boolean (optional)
Pass true to suppress notification of any
changes made by this call. Use with caution.
Defaults to:
false
The array of modified field names or null if nothing was modified.
Sets a single/multiple configuration options.
name : String/Object
The name of the property to set, or a set of key value pairs to set.
value : Object (optional)
The value to set for the name parameter.
this
Sets the model instance's id field to the given id.
id : Number/String
The new id.
options : Object (optional)
See set.
Set the session for this record.
session : Ext.data.Session
The session
Get the reference to the class from which this object was instantiated. Note that unlike Ext.Base#self,
this.statics() is scope-independent and it always returns the class from which it was called, regardless of what
this points to during run-time
Ext.define('My.Cat', {
statics: {
totalCreated: 0,
speciesName: 'Cat' // My.Cat.speciesName = 'Cat'
},
constructor: function() {
var statics = this.statics();
alert(statics.speciesName); // always equals to 'Cat' no matter what 'this' refers to
// equivalent to: My.Cat.speciesName
alert(this.self.speciesName); // dependent on 'this'
statics.totalCreated++;
},
clone: function() {
var cloned = new this.self(); // dependent on 'this'
cloned.groupName = this.statics().speciesName; // equivalent to: My.Cat.speciesName
return cloned;
}
});
Ext.define('My.SnowLeopard', {
extend: 'My.Cat',
statics: {
speciesName: 'Snow Leopard' // My.SnowLeopard.speciesName = 'Snow Leopard'
},
constructor: function() {
this.callParent();
}
});
var cat = new My.Cat(); // alerts 'Cat', then alerts 'Cat'
var snowLeopard = new My.SnowLeopard(); // alerts 'Cat', then alerts 'Snow Leopard'
var clone = snowLeopard.clone();
alert(Ext.getClassName(clone)); // alerts 'My.SnowLeopard'
alert(clone.groupName); // alerts 'Cat'
alert(My.Cat.totalCreated); // alerts 3
Returns a url-suitable string for this model instance. By default this just returns the name of the Model class followed by the instance ID - for example an instance of MyApp.model.User with ID 123 will return 'user/123'.
The url string for this model instance.
Tells this model instance that it has been removed from the store.
owner : Ext.data.Store
The store or other owner object from which this model has been removed.
Destroys a given set of linked objects. This is only needed if
the linked object is being destroyed before this instance.
names : String[]
The names of the linked objects to destroy.
this
Validates the current data against all of its configured validators. The
returned collection holds an object for each reported problem from a validator.
The errors collection.
Deprecated since version 5.0
Use getValidation instead.
Adds new config properties to this class. This is called for classes when they are declared, then for any mixins that class may define and finally for any overrides defined that target the class.
config : Object
mixinClass : Ext.Class (optional)
The mixin class if the configs are from a mixin.
This method adds the given set of fields to this model class.
Available since: 5.0.0
newFields : String[]/Object[]
The new fields to add. Based on the name
of a field this may replace a previous field definition.
Add methods / properties to the prototype of this class.
Ext.define('My.awesome.Cat', {
constructor: function() {
...
}
});
My.awesome.Cat.addMembers({
meow: function() {
alert('Meowww...');
}
});
var kitty = new My.awesome.Cat();
kitty.meow();
members : Object
The members to add to this class.
isStatic : Boolean (optional)
Pass true if the members are static.
Defaults to: false
privacy : Boolean (optional)
Pass true if the members are private. This
only has meaning in debug mode and only for methods.
Defaults to: false
Add / override static properties of this class.
Ext.define('My.cool.Class', {
...
});
My.cool.Class.addStatics({
someProperty: 'someValue', // My.cool.Class.someProperty = 'someValue'
method1: function() { ... }, // My.cool.Class.method1 = function() { ... };
method2: function() { ... } // My.cool.Class.method2 = function() { ... };
});
members : Object
this
Borrow another class' members to the prototype of this class.
Ext.define('Bank', {
money: '$$$',
printMoney: function() {
alert('$$$$$$$');
}
});
Ext.define('Thief', {
...
});
Thief.borrow(Bank, ['money', 'printMoney']);
var steve = new Thief();
alert(steve.money); // alerts '$$$'
steve.printMoney(); // alerts '$$$$$$$'
fromClass : Ext.Base
The class to borrow members from
members : Array/String
The names of the members to borrow
this
Create a new instance of this Class.
Ext.define('My.cool.Class', {
...
});
My.cool.Class.create({
someConfig: true
});
All parameters are passed to the constructor of the class.
the created instance.
Create aliases for existing prototype methods. Example:
Ext.define('My.cool.Class', {
method1: function() { ... },
method2: function() { ... }
});
var test = new My.cool.Class();
My.cool.Class.createAlias({
method3: 'method1',
method4: 'method2'
});
test.method3(); // test.method1()
My.cool.Class.createAlias('method5', 'method3');
test.method5(); // test.method3() -> test.method1()
alias : String/Object
The new method name, or an object to set multiple aliases. See flexSetter
origin : String/Object
The original method name
Returns the Ext.Configurator for this class.
Get the current class' name in string format.
Ext.define('My.cool.Class', {
constructor: function() {
alert(this.self.getName()); // alerts 'My.cool.Class'
}
});
My.cool.Class.getName(); // 'My.cool.Class'
className
Returns the configured Proxy for this Model.
The proxy
Asynchronously loads a model instance by id. Any processing of the loaded record should be done in a callback.
Sample usage:
Ext.define('MyApp.User', {
extend: 'Ext.data.Model',
fields: [
{name: 'id', type: 'int'},
{name: 'name', type: 'string'}
]
});
MyApp.User.load(10, {
scope: this,
failure: function(record, operation) {
//do something if the load failed
},
success: function(record, operation) {
//do something if the load succeeded
},
callback: function(record, operation, success) {
//do something whether the load succeeded or failed
}
});
id : Number/String
The ID of the model to load. NOTE: The model returned must have an ID matching the param in the load request.
options : Object (optional)
The options param is an Ext.data.operation.Read config object containing success, failure and callback functions, plus optional scope.
success : Function
A function to be called when the model is processed by the proxy successfully. The callback is passed the following parameters:
record : Ext.data.Model
The record.
operation : Ext.data.operation.Operation
The operation.
failure : Function
A function to be called when the model is unable to be processed by the server. The callback is passed the following parameters:
record : Ext.data.Model
The record.
operation : Ext.data.operation.Operation
The operation.
callback : Function
A function to be called whether the proxy transaction was successful or not. The callback is passed the following parameters:
record : Ext.data.Model
The record.
operation : Ext.data.operation.Operation
The operation.
success : Boolean
true if the operation was
successful.
scope : Object
The scope in which to execute the callback functions. Defaults to the model instance.
session : Ext.data.Session (optional)
The session for this record.
The newly created model. Note that the model will (probably) still be loading once it is returned from this method. To do any post-processing on the data, the appropriate place to do see is in the callback.
This method produces the initializeFn for this class. If there are no fields
requiring conversion and no fields requiring
a default value then this method will
return null.
cls : Object
The initializeFn for this class (or null).
Used internally by the mixins pre-processor
name : Object
mixinClass : Object
Override members of this class. Overridden methods can be invoked via Ext.Base#callParent.
Ext.define('My.Cat', {
constructor: function() {
alert("I'm a cat!");
}
});
My.Cat.override({
constructor: function() {
alert("I'm going to be a cat!");
this.callParent(arguments);
alert("Meeeeoooowwww");
}
});
var kitty = new My.Cat(); // alerts "I'm going to be a cat!"
// alerts "I'm a cat!"
// alerts "Meeeeoooowwww"
Direct use of this method should be rare. Use Ext.define instead:
Ext.define('My.CatOverride', {
override: 'My.Cat',
constructor: function() {
alert("I'm going to be a cat!");
this.callParent(arguments);
alert("Meeeeoooowwww");
}
});
The above accomplishes the same result but can be managed by the Ext.Loader which can properly order the override and its target class and the build process can determine whether the override is needed based on the required state of the target class (My.Cat).
members : Object
The properties to add to this class. This should be specified as an object literal containing one or more properties.
this class
Removes the given set of fields from this model.
Available since: 5.0.0
removeFields : Boolean/String[]
The names of fields to remove or true
to remove all existing fields. Removes are processed first followed by adds so
if a field name appears in newFields as well that field will effectively be
added (however, in that case there is no need to include the field in this
array).
This method replaces the specified set of fields with a given set of new fields. Fields should normally be considered immutable, but if the timing is right (that is, before derived classes are declared), it is permissible to change the fields collection.
Available since: 5.0.0
newFields : String[]/Object[]
The new fields to add. Based on the name
of a field this may replace a previous field definition.
removeFields : Boolean/String[]
The names of fields to remove or true
to remove all existing fields. Removes are processed first followed by adds so
if a field name appears in newFields as well that field will effectively be
added (however, in that case there is no need to include the field in this
array).
Sets the Proxy to use for this model. Accepts any options that can be accepted by Ext.createByAlias.
proxy : String/Object/Ext.data.proxy.Proxy
The proxy
Ext JS | Terms of Use