How to properly sort data in ngTable columns?

Question

JavaScript

Yes, I prescribe
<td data-title="'name'" sortable="'firstName'">
But the firstName data can be stored in the table both with a small letter and with a capital letter, and then it sorts incorrectly. How to make it sort correctly regardless of the case of characters?

Answer 1

Add an additional field in which to put firstName.toLowerCase()
and sort by it.