how can i set extjs column in a function? - extjs

Question

I have an EditorGridPanel which includes some columns but i want to change its type one of them to editor according to some values.
My column is below:
header: dil('Fiyat'),
width: 30,
sortable: true,
renderer: Ext.util.Format.numberRenderer('$0.000,00/i'),
dataIndex: 'fiyat'
but after changes, i want to work like:
header: dil('Fiyat'),
width: 30,
sortable: true,
renderer: Ext.util.Format.numberRenderer('$0.000,00/i'),
dataIndex: 'fiyat'
editor: new Ext.form.NumberField({
enableKeyEvents : true,
allowBlank: false,
allowNegative: false,
style: 'text-align:left'
})
My entire code:
var po_combolu_toolbar2 = new Ext.Toolbar({
items: [
new Ext.form.ComboBox({
id: 'po_combo_id',
hiddenName: 'po_combo_hid',
name: 'po_combo_name',
store: PoTipStore,
valueField: 'id',
displayField: 'isim',
typeAhead: true,
triggerAction: 'all',
emptyText: dil('Tip Seçiniz'),
selectOnFocus: true,
anchor: '100%',
listeners: {
select: {
fn: function (combo, value) {
var modelCmp = Ext.getCmp('po_combo_id').getValue();
po_siparis_grid.store.setBaseParam("secim", modelCmp);
if (Ext.getCmp('po_combo_id').getValue() == 5) {
} else {
}
po_siparis_grid.store.load();
}
}
},
allowBlank: true
})]
});
var po_siparis_grid = new xg.EditorGridPanel({
sm: new Ext.grid.RowSelectionModel({
singleSelect: true
}),
ds: new Ext.data.GroupingStore({
reader: po_siparis_reader,
writer: po_siparis_writer,
autoSave: false,
baseParams: {
type: 'POSiparis'
},
proxy: new Ext.data.HttpProxy({
api: {
read: {
url: 'phps/POSiparisGetir.php?lang=dil(lang)',
method: 'POST'
},
create: 'app.php/users/create',
update: 'phps/POKayit.php?lang=dil(lang)',
destroy: {
url: 'app.php/users/destroy',
method: "DELETE"
}
}
}),
sortInfo: {
field: 'id',
direction: 'ASC'
},
listeners: {
save: function (store, batch, data) {
Ext.Msg.alert(dil('Mesaj'), dil('Kayıt Yapıldı.Teşekkürler.'));
window.bolgesel.siparisler.genel.mnt.dataStoreUpdate = 0;
},
update: function () {
window.bolgesel.siparisler.genel.mnt.dataStoreUpdate = 1;
}
},
groupField: 'grup'
}),
columns: [{
header: dil('Grup '),
width: 20,
sortable: true,
dataIndex: 'grup'
}, {
header: dil('Item No'),
width: 20,
sortable: true,
dataIndex: 'item_no'
}, {
header: dil('Kod'),
width: 40,
sortable: true,
dataIndex: 'code'
}, {
header: dil('Açıklama'),
sortable: true,
dataIndex: 'aciklama'
}, {
header: dil('Fiyat'),
id: "fiyat_column",
width: 30,
sortable: true,
renderer: Ext.util.Format.numberRenderer('$0.000,00/i'),
dataIndex: 'fiyat'
}, {
id: "tipikeadet",
header: dil('Adet'),
width: 30,
sortable: true,
dataIndex: 'adet',
editor: new Ext.form.NumberField({
enableKeyEvents: true,
allowBlank: false,
allowNegative: false,
style: 'text-align:left'
})
}, {
header: dil('Toplam'),
width: 30,
sortable: true,
renderer: function (v, params, record) {
return Ext.util.Format.number(record.data.fiyat * record.data.adet, '$0.000,00/i');
},
dataIndex: 'toplam',
summaryType: 'totalCost',
summaryRenderer: Ext.util.Format.numberRenderer('$0.000,00/i')
}],
view: new Ext.grid.GroupingView({
forceFit: true,
showGroupName: false,
enableNoGroups: false,
enableGroupingMenu: false,
hideGroupedColumn: true,
startCollapsed: true
}),
plugins: summary,
frame: true,
width: 800,
height: 250,
clicksToEdit: 1,
collapsible: false,
animCollapse: false,
trackMouseOver: false,
enableColumnMove: false,
iconCls: 'siparis'
});
I want to change the fiyat column speficitation in the po_combolu_toolbar2 select function.