Ascending and Descending Sort in Angular 4

Question

Why is it that sort function is working :

Transaction Date 

        

Answer 1

The issue here is :

Nested property of object, orderBy must be providing the sorting on the basis of first level of properties

I am considering, inner should be look like this,

{
    transaction_date : '10/12/2014'
    user : {
        name : 'something',
        ...
    }
}

try to make this object like, take all sortable property on first level ( OR you must have to change the orderBy that way )

{
    transaction_date : '10/12/2014'
    user_name : 'something',
    user : {
        name : 'something',
        ...
    }
}

And try.

<th (click)="sort('user_name')">
    User <i class="fa" [ngClass]="{'fa-sort': column != 'user_name', 
                                    'fa-sort-asc': (column == 'user_name' && isDesc), 
                                    'fa-sort-desc': (column == 'user_name' && !isDesc) }" 
            aria-hidden="true"> 
        </i>
</th>

---

Add records.map(record => record['user_name'] = record.user.name); , to your transform function , like this :

This will make the object as I suggested :

export class OrderByPipe implements PipeTransform {

  transform(records: Array<any>, args?: any): any {
    if(records && records.length >0 ){

    records.map(record => record['user_name'] = record.user.name); // add here

    return records.sort(function(a, b){
        ....
      }
    };
}