Disable/Enable cells on Ext.grid.Panel and cellediting

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Hello,

Here comes again the question how to enable/disable a cell inside a Ext.grid.Panel and cellediting...
I see that many forum threads were opened with this question, but I found no valid example/mechanism for ExtJS 4.2

Lets consider the following panel:

Ext.create('Ext.grid.Panel', {
    title: 'Cell editor',
    store: store,
    columns: [ {
        text: 'Jan',
        dataIndex: 'Jan',
        width: 50,
        editor: {
            xtype: 'numberfield',
            disabled: true, //Only on creating this panel I see this option of disable/enable!!!
            allowBlank: false
        }
    }, {
        text: 'Feb',
        dataIndex: 'Feb',
        width: 50,
        editor: {
            xtype: 'numberfield',
            allowBlank: true
        }
    }]
}

As you can see, there is the disable property, but I need to set the enable/disable dynamically, based on some configurations and not on column level (some cells from a column can be enabled others can be disabled)!

It's possible on a panel listener to manipulate the panel cell such that those cells are disable/enable?

listeners : {
        afterrender: function (panel) {
            // I need here to update the cells such that some are enabled/disabled, based on config....
            // ??????

        }
    }

Or, the listener is not option, are there other ways to enable/disable cells?

Regards,
Alex

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Hi there- I have shared this issue with the support team and asked that they reach out to you to provide some assistance. Your patience is greatly appreciated!

Michele