title: How to add button in Grid view column in extjs?
body: <p>When new row is created, then one field should contain a button created dynamically in Extended JS.</p>
  
  <p>Each button should contain different name and action listener.
  The column should like given in image.
  <img src="https://i.stack.imgur.com/gNqRh.png" alt="Grid view column with buttons."></p>