Angular 2. How to apply orderBy?

Answer 1

Thank you for your answers. I have written workable code below:

@Pipe({name: 'orderBy'})

export class orderBy implements PipeTransform {
    transform(obj: any, orderFields: string): any {
        orderFields.forEach(function(currentField) {
            var orderType = 'ASC';

            if (currentField[0] === '-') {
                currentField = currentField.substring(1);
                orderType = 'DESC';
            }

            obj.sort(function(a, b) {
                if (orderType === 'ASC') {
                    if (a[currentField] < b[currentField]) return -1;
                    if (a[currentField] > b[currentField]) return 1;
                    return 0;
                } else {
                    if (a[currentField] < b[currentField]) return 1;
                    if (a[currentField] > b[currentField]) return -1;
                    return 0;
                }
            });

        });
        return obj;
    }
}

This code consider order direction DESC or ASC. The usage: