Add component in Grid

Question

Hi i want add component in grid i try to do this Rendering a component into an ExtJS grid but i saw in cell and button under grid

I use ExtJs 4

    columns:[
      {header:"test", dataIndex:'registrationDate', width:30, renderer:function (value, id, r) {
            var id = Ext.id();
            new Ext.Button({
                text:"1", handler:function (btn, e) {
                    // do whatever you want here
                }
            }).render(document.body, id);

            return('<div id="' + id + '"></div>');
        }}
    ],

Answer 1

If you just need the buttons with click handler in the columns use the actioncolumn xtype.