ComboBox : using select () to select the first item from the store.

[nikhilkrishnan]

Hi,

I need to set the first item from the store as the selected item in the combobox as soon as the form opens .

cro_store=new Ext.data.JsonStore({
                    url:base_root+"php/cce_target_achievement.php",
                    id:'cro_store',
                    totalProperty:'totalCount',
                    root:'qry',
                    fields:['user_id','name'],
                    baseParams:{task:'GET_CRO'}
                });
                cro_store.load();
                cro_combo=new Ext.form.ComboBox({
                    id:'cro_combo',
                    fieldLabel:'CROs',
                    store:cro_store,
                    mode:'remote',
                    typeAhead: true,
                    anchor:'100%',
                    triggerAction: 'all',
                    displayField:'name',
                    valueField:'user_id',
                    emptyText:'CROs'
                });
cro_combo.select(0);

But this shows an error in the firebug

this.view is undefined
Ext.form.ComboBox=Ext.extend(Ext.form....);Ext.reg("combo",Ext.form.ComboBox);

I cannot use setValue and selectByValue as the datas are dynamic.

[Condor]

No, don't use select() or selectByValue() (I don't even know why these methods are documented as public - you should never use them).

Instead, use setValue().

ps. Don't forget that you have to wait for the store to load before you can select the first entry!

[nikhilkrishnan]

No, don't use select() or selectByValue() (I don't even know why these methods are documented as public - you should never use them).

Instead, use setValue().

ps. Don't forget that you have to wait for the store to load before you can select the first entry!

Thank you for the reply Condor. To use the setValue() method i need to know the values that are currently loaded in the store. But what if the values are dynamic ? I mean what if the values keep changing.

I just want to select the first value which ever comes first in th store .

Thank you...

[Condor]

cro_store.load({
  callback: function(){
    cro_combo.setValue(cro_store.getAt(0).get('user_id'));
  }
});

[nikhilkrishnan]

Thank you. I think i need to read the docs a lot. Its working