How to adding field's config on the fly?

Question

I want to adding allow Blanks \'s config when i click on a node in my Tree Panel ! if node is a leaf , i want to put name field\'s config : allowBlank : false and if not a

Answer 1

In general, this is how you "apply" changes to an Ext component that you have already created.

var combo = new Ext.form.ComboBox({some initial config});

Ext.apply(combo, {your config object});

How are you loading your Treenodes? You will probably do better by adding those properties from the back end if that's where it comes from.