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1 | import { Http, RequestOptionsArgs, URLSearchParams, Response } from '@angular/http' | |
2 | ||
3 | import { ServerDataSource } from 'ng2-smart-table' | |
4 | ||
5 | export class RestDataSource extends ServerDataSource { | |
6 | constructor (http: Http, endpoint: string) { | |
7 | const options = { | |
8 | endPoint: endpoint, | |
9 | sortFieldKey: 'sort', | |
10 | dataKey: 'data' | |
11 | } | |
12 | ||
13 | super(http, options) | |
14 | } | |
15 | ||
16 | protected extractTotalFromResponse (res: Response) { | |
17 | const rawData = res.json() | |
18 | return rawData ? parseInt(rawData.total, 10) : 0 | |
19 | } | |
20 | ||
21 | protected addSortRequestOptions (requestOptions: RequestOptionsArgs) { | |
22 | const searchParams = requestOptions.params as URLSearchParams | |
23 | ||
24 | if (this.sortConf) { | |
25 | this.sortConf.forEach((fieldConf) => { | |
26 | const sortPrefix = fieldConf.direction === 'desc' ? '-' : '' | |
27 | ||
28 | searchParams.set(this.conf.sortFieldKey, sortPrefix + fieldConf.field) | |
29 | }) | |
30 | } | |
31 | ||
32 | return requestOptions | |
33 | } | |
34 | ||
35 | protected addPagerRequestOptions (requestOptions: RequestOptionsArgs) { | |
36 | const searchParams = requestOptions.params as URLSearchParams | |
37 | ||
38 | if (this.pagingConf && this.pagingConf['page'] && this.pagingConf['perPage']) { | |
39 | const perPage = this.pagingConf['perPage'] | |
40 | const page = this.pagingConf['page'] | |
41 | ||
42 | const start = (page - 1) * perPage | |
43 | const count = perPage | |
44 | ||
45 | searchParams.set('start', start.toString()) | |
46 | searchParams.set('count', count.toString()) | |
47 | } | |
48 | ||
49 | return requestOptions | |
50 | } | |
51 | } |