OrderByPipe in angular

@NgModule({

declarations: [

OrderByPipe

]

})

import { Pipe, PipeTransform } from '@angular/core';

@Pipe({

name: 'orderBy'

})

export class OrderByPipe implements PipeTransform {

transform(value: Array<any>, field: any): any {

if (value == null) {

return null;

}

let sortingtype: number = parseInt(field[0] + 1);

var crntfield = field.substring(1).split('.');

function compare(a, b) {

switch (crntfield.length) {

case 1: a = a[crntfield[0]]; b = b[crntfield[0]]; break;

case 2: a = a[crntfield[0]][crntfield[1]];

b = b[crntfield[0]][crntfield[1]]; break;

case 3: a = a[crntfield[0]][crntfield[1]][crntfield[2]];

b = b[crntfield[0]][crntfield[1]][crntfield[2]]; break;

case 4: a = a[crntfield[0]][crntfield[1]][crntfield[2]][crntfield[3]];

b = b[crntfield[0]][crntfield[1]][crntfield[2]][crntfield[3]]; break;

case 5: a = a[crntfield[0]][crntfield[1]][crntfield[2]][crntfield[3]][crntfield[4]]; b = b[crntfield[0]][crntfield[1]][crntfield[2]][crntfield[3]][crntfield[4]]; break;

}

if (a < b)

return sortingtype * 1;

if (a > b)

return sortingtype * -1;

return 0;

}

return value.sort(compare);

}

}