Convert an array to Observable Object to normal array of object in Angular 4

Question

I found lot of references to convert array of object to observable array of object, but not reverse from observable array of object to normal array of object?

This code return :

myObjects: myObjects[] = this.myService.getMyObjects();

TS2322:Type 'Observable< myObjects[]>' is not assignable to type 'myObjects[]'. Property 'length' is missing in type 'Observable< myObjects[]>'.

How can I convert / cast ?

Thanks

Answer 1

You have to subscribe to it and store the value in a variable.

WARNING

This is an asynchronous call, meaning that your data will be empty until you loaded everything.

myObjects: myObjects[] = [];

ngOnInit(){
    this.myService.getMyObjects().subscribe( objects => {
        this.myObjects = objects;
    });
}

As it seems to be an http call, once the http call has finished, your data will be in the myObjects variable.