toggle columns editable or not

[ttbgwt]

I used to be able to do this in 3.4, but can't figure out how to do it in 4.1?

        var cm = grid.getColumnModel();
        cm.setEditable(cm.findColumnIndex('asset_class'), true);

[ttbgwt]

I've gotten this far, but I don't even want a cell's editor to appear. How can I turn off and on cell editing?

        var columns = me.getView().getHeaderCt().getGridColumns();
        var i;
        for (i = 0; i < columns.length; i++) {
            if (columns[i].getEditor() !== undefined) {
                columns[i].getEditor().setReadOnly(!state); //this only makes editor readonly, I want to disable editor
            }
        }

[ttbgwt]

Figured it out:

        //create cell editing plugin
        var cellEditing = Ext.create('Ext.grid.plugin.CellEditing', {
            clicksToEdit: 1,
            listeners: {
                beforeedit: function (e, editor) {
                    if (!me.cellEditingEnabled) {
                        return false;
                    }
                }
            }
        });