我使用angular cli 6,rxjs 6,angularfire2和firebase。我想在角度6中使用GoogleChart API。
我的代码可以正确地用组件中用硬文字编写的数据,但是我想将其与firebase中的数据一起使用。
这是有效的方法:
Component.html
<div>
<app-gantt [data]="data1" [config]="config1" [elementId]="elementId1"></app-gantt>
</div>
Component.ts
export class PpsComponent implements OnInit {
patientid: string;
ppssToDisplay;
data1: any[];
config1: GanttChartConfig;
elementId1: string;
constructor(
private route: ActivatedRoute,
private location: Location,
private ppssService: PPSsService,
private router: Router,
){ }
ngOnInit() {
this.route.params.forEach((urlParameters) => {
this.patientid = urlParameters['id'];});
this.ppssToDisplay = this.ppssService.getPPSByPatientid(this.patientid);
this.data1 = [[ 'treatement','dateA', 'dayeB'],
[ 'Chirurgie', new Date(2017, 3, 29), new Date(2017, 3, 30)],
[ 'Chimiothérapie', new Date(2017, 2, 4), new Date(2018, 2, 4)],
[ 'Radiothérapie', new Date(2017, 2, 4), new Date(2018, 2, 4)]];
this.config1 = new GanttChartConfig( '',new Date (),new Date ());
this.elementId1 = 'myGanttChart';
现在,我想将图形与来自Firebase的数据一起使用。这是我尝试过的:
Interface.model
export class PPS
{
constructor (
public Patientid : string,
public treatement: string,
public dateA = new Date (),
public dateB= new Date (),
public description: string,
public effetsind: string ) {}
}
Service.ts
getPPSByPatientid(Patientid: string) {
return this.database.list('/ppss', ref =>
ref.orderByChild("Patientid").equalTo(Patientid)).valueChanges();
}
Component.ts
export class PpsComponent implements OnInit {
patientid: string;
ppssToDisplay;
obj: any[];
data1: any[];
config1: GanttChartConfig;
elementId1: string;
constructor(
private route: ActivatedRoute,
private location: Location,
private ppssService: PPSsService,
private router: Router,
){ }
ngOnInit() {
this.route.params.forEach((urlParameters) => {
this.patientid = urlParameters['id'];});
this.ppssToDisplay =this.ppssService.getPPSByPatientid(this.patientid);
let interestingFields = [ 'treatement','dateA', 'dateB'];
this.ppssToDisplay.subscribe(obj => {
this.data1 = [
interestingFields,
interestingFields.map(field => obj[field]),
];
console.log(this.data1);
});
this.config1 = new GanttChartConfig( '',new Date (),new Date ());
this.elementId1 = 'myGanttChart';
console.log(this.data1);
(2) [Array(3), Array(3)]
0:(3) ["treatement", "dateA", "dateB"]
1:(3) [undefined, undefined, undefined]
length:2
__proto__:Array(0)
我的代码中是否存在任何错误? (当然)还是有一种更简单的方式来传输数据(例如ngfor循环)?
谢谢您的帮助
答案 0 :(得分:0)
您遇到与these(https://stackoverflow.com/a/51186182/8217812)相同的问题。
基本上,从您映射数据的角度来看,这是错误的。
this.ppssToDisplay.subscribe(ppsList => {
this.data1 = [
interestingFields,
...ppsList.map(pps => interestingFields.map(field => pps[field]))
];
});
那应该可以解决您的问题。