title: Ag-grid Custom Filter: filterParams - cellRenderer in Angular 1.x
body: <p>According to the documentation, <a href="https://www.ag-grid.com/best-angularjs-data-grid/index.php" rel="nofollow">https://www.ag-grid.com/best-angularjs-data-grid/index.php</a>, if I set the angularCompileFilters option to true in a grid's options object, the template in a cellRenderer will be taken as an Angular directive. </p>
  
  <p>However, I can only make the Angular compilation work for the cells - not the heading filters. Is it because it only works with the Ag-Grid-Enterprise version? Or is it simply a bug?</p>
  
  <p>Besides, I do not see any properly-documented sample snippets for that as well.</p>