I am in the process of developing a file upload feature for my application. Once the files are successfully uploaded, I want to clear the list of uploaded files. To achieve this, I have created the following function in the file uploader component:
clearFileList(){
this.uploadedFiles=[]
}
Now, I would like to invoke this function from a service so that I can reuse it in other components. How can I accomplish this?
Using a service to call a component function may not be the best practice. I recommend a different approach where the service contains a public subject that the component can subscribe to:
class DataService {
public dataStream$ = new Subject<any>();
sendData() {
this.dataStream$.next(...);
}
}
class DisplayComponent {
constructor(private dataService: DataService) {}
ngOnInit() {
this.dataService.dataStream$.subscribe(data => {
this.displayData(data);
}
}
displayData(data) {
// do something with the data
}
}
The service can trigger the sendData method, which will then invoke the component's method.
And don't forget to unsubscribe when necessary.
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