I'm looking to modify the following method to change the return type to a Promise or Observable:
basketItemNodes: TreeNode[] = [];
getBasketItems() {
this.basketService.getAllBasketItems()
.subscribe(
res => {
this.basketItemNodes = <TreeNode []> res;
},
err => {
console.log(err);
}
);
return this.basketItemNodes;
}
Any suggestions on how to achieve this?
To send back an Observable, avoid subscribing at this point. Instead, you can simply transform the response into <TreeNode []> and return it.
cartItemNodes: TreeNode[] = [];
fetchCartItems() {
return this.cartService.getAllCartItems()
.pipe(map(response => this.cartItemNodes = <TreeNode[]> response));
}
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