I have a combobox and now I want to create a dynamic textfields on change of this combo box in Extjs 4 and i am following the Mvc structure of Extjs . Mycombo is below
{
xtype : 'combo',
store : 'product.CategoryComboBox',
name: 'category',
id:'category',
displayField: 'name',
valueField: 'idProductCategory',
multiSelect : false,
fieldLabel: 'Category',
allowBlank: false,
allowQueryAll : false,
forceSelection : true,
typeAhead: true,
triggerAction: 'all',
delimiter : ',',
width: 300,
queryMode:'local',
listeners:{select:{fn:function(combo, value) {}
}