how to find column index using dataIndex Extjs 4

Question

Well in ExtJS 3 i used the following code:

grid.getColumnModel().findColumnIndex(\"Tasks\")

I tried finding it on the api docs, but no luck...so how

Answer 1

Component Query can get a bit slow and wont guarantee only one result. Its a bit faster to just iterate over the array of columns that belong to the grid.

Here is a simple static util function that does the trick using ext framework.

 findColumnDataIndex: function(columns, dataIndex) {
   var column = null;
   Ext.Array.each(columns, function(c) {
     if (c.dataIndex === dataIndex) {
       column = c;
       return false;
     }
   }, this);
   return column;
 }

use this code to get the columns from your grid panels instance

var columns = grid.headerCt.items.items,