I'm currently working with TypeScript and Angular2. I've developed a custom pipe to filter a list of results, but now I need to figure out how to sort that list alphabetically or in some other specific way. Can anyone provide guidance on how to achieve this?
If you're looking to improve sorting functionality in Angular, consider creating a custom pipe that utilizes the sort method of arrays:
import { Pipe } from "angular2/core";
@Pipe({
name: "sort"
})
export class ArraySortPipe {
transform(array: Array<string>, args: string): Array<string> {
array.sort((a: any, b: any) => {
if (a < b) {
return -1;
} else if (a > b) {
return 1;
} else {
return 0;
}
});
return array;
}
}
You can then utilize this custom pipe by chaining it with other pipes like so:
<li *ngFor="list | filter | sort"> (...) </li>
This example focuses on sorting arrays with string values, but you can customize the sorting logic for more complex scenarios (such as sorting object arrays based on specific attributes or parameters).
Check out this plunkr demonstration for reference: https://plnkr.co/edit/WbzqDDOqN1oAhvqMkQRQ?p=preview.
I hope this explanation proves helpful to you. Regards, Thierry
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