Question

I am quite new to extjs..and I installed ext js4 in my server. I get the following error. Not sure what it means:

Ext.grid.ColumnModel is not a constructor

here ‘s my link:
http://srikanthrajan.com/test/index.html

Now I get Ext.grid.RowSelectionModel is not a constructor

Basically I am trying the following tutorial:

http://www.sencha.com/learn/ext-js-grids-with-php-and-sql

Answer 1

I think the columns for PresidentsColumnModel should be Ext.grid.column.Column, not Ext.grid.ColumnModel