Container#lookup()

lookup (fullName, options) Anyprivate

Defined in packages/container/lib/container.js:71

Given a fullName return a corresponding instance.

The default behaviour is for lookup to return a singleton instance. The singleton is scoped to the container, allowing multiple containers to all have their own locally scoped singletons.

let registry = new Registry();
let container = registry.container();
 
registry.register('api:twitter', Twitter);
 
let twitter = container.lookup('api:twitter');
 
twitter instanceof Twitter; // => true
 
// by default the container will return singletons
let twitter2 = container.lookup('api:twitter');
twitter2 instanceof Twitter; // => true
 
twitter === twitter2; //=> true

If singletons are not wanted, an optional flag can be provided at lookup.

let registry = new Registry();
let container = registry.container();
 
registry.register('api:twitter', Twitter);
 
let twitter = container.lookup('api:twitter', { singleton: false });
let twitter2 = container.lookup('api:twitter', { singleton: false });
 
twitter === twitter2; //=> false

Parameters:

fullName String

options [Object]

source [String]: The fullname of the request source (used for local lookup)

Returns:

Any

Links:

http://emberjs.com/api/classes/Container.html#method_lookup

doc_EmberJs

2025-01-10 15:47:30

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