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1 | import { Injectable } from '@angular/core' | |
2 | import { Response } from '@angular/http' | |
3 | import { Observable } from 'rxjs/Observable' | |
4 | ||
5 | export interface ResultList { | |
6 | data: any[] | |
7 | total: number | |
8 | } | |
9 | ||
10 | @Injectable() | |
11 | export class RestExtractor { | |
12 | ||
13 | extractDataBool (res: Response) { | |
14 | return true | |
15 | } | |
16 | ||
17 | extractDataList (res: Response) { | |
18 | const body = res.json() | |
19 | ||
20 | const ret: ResultList = { | |
21 | data: body.data, | |
22 | total: body.total | |
23 | } | |
24 | ||
25 | return ret | |
26 | } | |
27 | ||
28 | extractDataGet (res: Response) { | |
29 | return res.json() | |
30 | } | |
31 | ||
32 | handleError (res: Response) { | |
33 | let text = 'Server error: ' | |
34 | text += res.text() | |
35 | let json = '' | |
36 | ||
37 | try { | |
38 | json = res.json() | |
39 | } catch (err) { | |
40 | console.error('Cannot get JSON from response.') | |
41 | } | |
42 | ||
43 | const error = { | |
44 | json, | |
45 | text | |
46 | } | |
47 | ||
48 | console.error(error) | |
49 | ||
50 | return Observable.throw(error) | |
51 | } | |
52 | } |