Angular 在角坐标系中的组件之间共享数据
其他帖子没有帮助我解决这个问题 我想通过两个组件和一个服务共享从HTTP请求检索到的变量 为此,我意识到了这一点,但不幸的是,数据没有显示在我的组件(控制台中没有错误)或编译中。 sharedata.service.tsAngular 在角坐标系中的组件之间共享数据,angular,components,Angular,Components,其他帖子没有帮助我解决这个问题 我想通过两个组件和一个服务共享从HTTP请求检索到的变量 为此,我意识到了这一点,但不幸的是,数据没有显示在我的组件(控制台中没有错误)或编译中。 sharedata.service.ts @Injectable({ providedIn: 'root' }) export class SharedataService { private dataSourceMyContainers = new Subject<any>(); cons
@Injectable({
providedIn: 'root'
})
export class SharedataService {
private dataSourceMyContainers = new Subject<any>();
constructor(private dataService: RestApiService) {
this.getContainers();
}
getContainers(): any{
this.dataService.getAllContainers().subscribe((res)=>{
this.dataSourceMyContainers = res;
});
}
getList(){
return this.dataSourceMyContainers.asObservable();
}
updateApprovalMessage(message: any) {
this.dataSourceMyContainers.next(message)
}
}
谢谢你的帮助 您的代码有两个问题:
});
}
更改以BehaviorSubject@enno.void谢谢,刚刚测试过,但不太适用于公共数据源mycontainers=newbehaviorsubject(null);还有另一个问题:this.dataSourceMyContainers=res;->this.dataSourceMyContainers.next(res);谢谢!把它放在回答中,我会验证
@Injectable({
providedIn: 'root'
})
export class StatusCardComponent implements OnInit {
runningContainer?: number = 0;
pausedContainer?: number = 0;
stoppedContainer?: number = 0;
failedContainer?: number = 0;
dataSourceMyContainers: any = [];
constructor(private sharedataService: SharedataService, private notification: NotificationsService) {
}
ngOnInit(): any{
// it enters here
this.sharedataService.getList().subscribe((res)=>{
this.dataSourceMyContainers = res; // but not enter here
console.log("res"+ res); // nothing displayed
});
}
btnCountStatus(): void {
this.runningContainer = this.dataSourceMyContainers.filter((container: any) => container.status === 'RUNNING').length;
this.pausedContainer = this.dataSourceMyContainers.filter((container: any) => container.status === 'PAUSED').length;
this.stoppedContainer = this.dataSourceMyContainers.filter((container: any) => container.status === 'STOPPED').length;
this.failedContainer = this.dataSourceMyContainers.filter((container: any) => container.status === 'FAILED').length;
}
}