cargdev/angular
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

feat(NgFor): $last property support

Browse Source 
Makes a new `$last` property available during the loop with a boolean
showing if it's the last item in the iteration.

closes: #3102

Closes #3991
This commit is contained in:
Alfonso Presa
2015-09-04 16:59:04 +02:00
committed by Alfonso Presa
parent 2384082b5c
commit be954115f8
2 changed files with 25 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
modules/angular2/src/core/directives/ng_for.ts
View File

@ -9,7 +9,8 @@ import {isPresent, isBlank} from 'angular2/src/core/facade/lang';
* to the current item from the iterable.
*
* It is possible to alias the `index` to a local variable that will be set to the current loop
* iteration in the template context.
* iteration in the template context, and also to alias the 'last' to a local variable that will
* be set to a boolean indicating if the item is the last one in the iteration
*
* When the contents of the iterator changes, `NgFor` makes the corresponding changes to the DOM:
*
@ -76,6 +77,10 @@ export class NgFor {
for (var i = 0; i < insertTuples.length; i++) {
this._perViewChange(insertTuples[i].view, insertTuples[i].record);
}
for (var i = 0, ilen = this.viewContainer.length; i < ilen; i++) {
this.viewContainer.get(i).setLocal('last', i === ilen - 1);
}
}
private _perViewChange(view, record) {