How can we set a combobox value like this ?

[yagi]

Hi All..

Actually it is a basic question but I'm still a bit confused of this case.

Here I have data like this in my database:
id | rating
1 | A
2 | B
3 | C

If I try to set the combobox like this, it works..
Ex :

Ext.getCmp('combo_id').setValue('2');
// By the ID

My question is, How Can we set the combobox value based on the "rating" data like this?
Ex :

Ext.getCmp('combo_id').setValue('B');
// in the combo list, B should be selected and when I want to save it, the combo will send '2' as the value

I try the last code but it didn't work..


Could someone help me please?


Thanks in advance..

[Condor]

var combo = Ext.getCmp('combo_id');
var rec = combo.findRecord(combo.displayField, 'B');
combo.setValue(rec.get(combo.valueField));

[yagi]

Thanks a lot Condor for your reply.

But there is an error like this:

rec is undefined
combo_unit.setValue(rec.get(combo_unit.valueField));

On the other side, If I try it directly from firebug, it works.

is there something wrong?


Thanks..

[Condor]

I assume you forgot to wait for the combobox store to load.

[yagi]

Hmm.., I have loaded my combo store before I use the code.

// render the combo to a panel, and place it to window.
...
var combo_unit = Ext.getCmp('id_unit_value');
combo_unit.store.removeAll();
combo_unit.store.load({
	params: {
		'idunit': record.idunit
	}
})
	
var rec = combo_unit.findRecord(combo_unit.displayField, val2[2]);
console.log(combo_unit.findRecord());
combo_unit.setValue(rec.get(combo_unit.valueField));

is that a right way?

Thanks..

[Condor]

No, you have to wait for the server to respond (remember that the A in Ajax is from Asynchronous).

combo_unit.store.load({
  params: {
    idunit: record.idunit
  },
  callback: function(){
    var rec = combo_unit.findRecord(combo_unit.displayField, val2[2]);
    console.log(combo_unit.findRecord());
    combo_unit.setValue(rec.get(combo_unit.valueField));
  }
});

[yagi]

Oh ya..., I See...


it works now...


Thanks a lot Condor...