3aa533f61b
The pipes example stopped working in beta.16; roll it back to the last known working version. See earlier commit for code changes necessary in support of beta.16: https://github.com/angular/angular.io/commit/0557c728d75e519bc6846b37492 414dff540c6ee
24 lines
562 B
Dart
24 lines
562 B
Dart
// #docregion
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import 'dart:html';
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import 'dart:async';
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import 'dart:convert';
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import 'package:angular2/angular2.dart';
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// #docregion pipe-metadata
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@Pipe(name: 'fetch', pure: false)
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// #enddocregion pipe-metadata
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class FetchJsonPipe extends PipeTransform {
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dynamic _fetchedValue;
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Future<dynamic> _fetchPromise;
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transform(dynamic url, [List<dynamic> args]) {
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if (_fetchPromise == null) {
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_fetchPromise = new Future(() async {
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_fetchedValue = JSON.decode(await HttpRequest.getString(url));
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});
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}
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return _fetchedValue;
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}
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}
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