title: How get angular ng2-smart-table filtering and sorting external events?
body: <p>I have REST API backend so all sorting, filtering and pagination is manages by backend. On my Angular aplictation I want to display data at ng2 smart table. After clicking on table header column name (sorting asc, desc) is table content sorted only on frontend side. I need to get some event to call REST API to updated data ( Not only frontend sorting ), the same I need to filtering by headers input fields. After typing to filtering input I need to call rest api to get filtered data from backend.</p>
  
  <p>If I set table mode external I get events only for creating new item, deleting item and editing event. How could I get sorting and filtering events?</p>
  
  <p>I tried everithing from smart table doc but in docs are solution only for create delete and update external event not sorting and filtering</p>