Extjs 4 How to get id of parent Component? - extjs4

Question

I have multiple fieldset. And have Button inside each fieldset in Extjs 4.
I want to get fieldset id on the button click event, so that i can know from which fieldset the button was clicked
How do i get this?
{
xtype:'fieldset',
id:'fs1',
items:[{
xtype:'button',
id:'b1',
handler:function(){
// here i want to get fieldset's id because because fieldset and button were added dynamically.
}
}]
}
Thanks,
Kunal
Actual Code:
Ext.define('My.Group',{
xtype : 'fieldset',
config: {
title:'Group' + i.toString(),
id : '_group' + i.toString()
},
constructor: function(config) {
this.initConfig(config);
return this;
},
collapsible : true,
frame : false,
boder : false,
items : [ {
xtype : 'button',
text : 'Add KeyWord',
id: 'btn',
width : 100,
handler : function(button,event) {
var fieldset = button.findParentByType('fieldset');
var fieldsetsID = fieldset.getId();
console.log(fieldset);
Ext.getCmp(fieldsetId).insert(2, rangeField);
Ext.getCmp(fieldsetsID).doLayout();
}
}, {
xtype : 'button',
text : 'Add Range Type',
width : 100
} ]
});
and i am calling this function on button click
handler : function() {
i=i+1;
var group = new My.Group({
title:'Group' + i.toString(),
id : '_group' + i.toString()
});
console.log(group);
Ext.getCmp('_aspanel').insert(i, group);
Ext.getCmp('_aspanel').doLayout();

Answer 1

I've implemented handler properly.
{
xtype:'fieldset',
id:'fs1',
items:[{
xtype:'button',
id:'b1',
handler:function(btn){
// Retrieve fieldset.
var fieldset = btn.up('fieldset');
// Retrieve Id of fieldset.
var fieldsetId = fieldset.getId();
}
}]
}
In that case try this:
button.up("[xtype='fieldset']")

Answer 2

Ext.onReady(function() {
var panel = Ext.create('Ext.panel.Panel', {
items: {
xtype:'fieldset',
id:'fs1',
items:[{
xtype:'button',
id:'b1',
handler:function(b,e){
var fieldset = b.findParentByType('fieldset');
var fieldsetID = fieldset.getId();
console.log(fieldsetID);
}
}]
},
renderTo: document.body
});
});
Notice, that once you have fieldset variable, you can actually add items to this container directly, without need to use its ID