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import { Http, RequestOptionsArgs, URLSearchParams, } from '@angular/http';
import { ServerDataSource } from 'ng2-smart-table';
export class RestDataSource extends ServerDataSource {
constructor(http: Http, endpoint: string) {
const options = {
endPoint: endpoint,
sortFieldKey: 'sort',
dataKey: 'data'
}
super(http, options);
}
protected extractTotalFromResponse(res) {
const rawData = res.json();
return rawData ? parseInt(rawData.total): 0;
}
protected addSortRequestOptions(requestOptions: RequestOptionsArgs) {
let searchParams: URLSearchParams = <URLSearchParams> requestOptions.search;
if (this.sortConf) {
this.sortConf.forEach((fieldConf) => {
const sortPrefix = fieldConf.direction === 'desc' ? '-' : '';
searchParams.set(this.conf.sortFieldKey, sortPrefix + fieldConf.field);
});
}
return requestOptions;
}
protected addPagerRequestOptions(requestOptions: RequestOptionsArgs) {
let searchParams: URLSearchParams = <URLSearchParams> requestOptions.search;
if (this.pagingConf && this.pagingConf['page'] && this.pagingConf['perPage']) {
const perPage = this.pagingConf['perPage'];
const page = this.pagingConf['page'];
const start = (page - 1) * perPage;
const count = perPage;
searchParams.set('start', start.toString());
searchParams.set('count', count.toString());
}
return requestOptions;
}
}
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