Angular Material 2 DataTable Sorting with nested objects

Question

I have a normal Angular Material 2 DataTable with sort headers. All sort are headers work fine. Except for the one with an object as value. These doesn\'t sort at all.

Answer 1

I customized for multiple nested object level.

this.dataSource.sortingDataAccessor =
  (data: any, sortHeaderId: string): string | number => {
    let value = null;
    if (sortHeaderId.includes('.')) {
      const ids = sortHeaderId.split('.');
      value = data;
      ids.forEach(function (x) {
        value = value? value[x]: null;
      });
    } else {
      value = data[sortHeaderId];
    }
    return _isNumberValue(value) ? Number(value) : value;
  };