我刚刚开始研究Angular 4,我试图将我从json格式的角度服务收到的一些数据呈现为angular-datatable,但无论哪种选择我尝试它都不适合我。 表即将到来,列即将到来,但列内的数据不会显示。
任何帮助都会很棒,
提前致谢.. !!!!
请在下面找到我的代码:
component.html
<table datatable [dtOptions]="dtOptions" class="row-border hover"></table>
component.ts
import { Component, OnInit } from '@angular/core';
import { FleetDataService } from '../../services/fleet-data.service';
import { Subject } from 'rxjs/Subject';
@Component({
selector: 'app-dashboard',
templateUrl: './dashboard.component.html',
styleUrls: ['./dashboard.component.scss']
})
export class DashboardComponent implements OnInit {
private fleetData: any;
dtOptions: DataTables.Settings = {};
dtTrigger: Subject<any> = new Subject();
constructor(private getFleetData:FleetDataService) { }
ngOnInit() {
this.getFleetData.getFleetData().subscribe(
fleetData => {
this.fleetData = fleetData;
console.log(this.fleetData);
this.dtTrigger.next();
},
err => {
console.log(err);
}
);
this.dtOptions = {
pagingType: 'full_numbers',
columns: [{
title: 'First Name',
data: this.fleetData
}, {
title: 'Last Name',
data: this.fleetData
}, {
title: 'Score',
data: this.fleetData
}]
};
}
}
component.service
import { Injectable } from '@angular/core';
import { HttpModule, Http, Response, Headers, RequestOptions } from
'@angular/http';
import { Observable } from 'rxjs/Rx';
@Injectable()
export class FleetDataService {
constructor(private http: Http) { }
getFleetData() {
return this.http.get("../../assets/data/test.json")
.map((res:Response) => res.json())
.catch((error:any) => Observable.throw(error.json().error || 'Server
Error'));
}
}
test.json
[{
"FirstName": "Jill",
"LastName": "Smith",
"Score": "disqualified"
}, {
"FirstName": "Eve",
"LastName": "Jackson",
"Score": "94"
}, {
"FirstName": "John",
"LastName": "Doe",
"Score": "80"
}, {
"FirstName": "Adam",
"LastName": "Johnson",
"Score": "67"
}]
答案 0 :(得分:1)
您可以在订阅之外设置dtOptions。
如果这样做,fleetData保持为空,因此dtOptions永远不会正确设置,因为Observable是异步的。我提出这个代码:
export class DashboardComponent implements OnInit {
dtOptions: DataTables.Settings = {};
dtTrigger: Subject<any> = new Subject();
constructor(private getFleetData:FleetDataService) { }
ngOnInit() {
this.getFleetData.getFleetData().subscribe(
fleetData => {
console.log(fleetData);
this.buildDtOptions(fleetData)
this.dtTrigger.next();
},
err => {
console.log(err);
});
}
private buildDtOptions(fleetData: any): void {
this.dtOptions = {
pagingType: 'full_numbers',
columns: [
{title: 'First Name', data: fleetData},
{title: 'Last Name', data: fleetData},
{title: 'Score', data: fleetData}
]
};
}
}
对于此错误:ERROR TypeError: Cannot read property 'aDataSort' of undefined
。您可以在视图中执行微调器(ngIf / else),并在加载数据时显示数据表