extjs checkbox data rendering issue - extjs

Question

php return data from server side but not extjs not render the value of fields
i'm using xtype: 'checkbox'
{"total":1,"success":true,"locks":[{"id":"1","record_id":"11","is_unreachable":"1","is_directory_Lock":"1","is_Internet_Lock":"0","is_partner_Lock":"1","is_home_business":"1","is_top_listing":"1","is_mole":"1","is_pre_call":"1","is_new_business":"1","is_free_adv":"1","is_verified":"1","is_reviewed":"1","is_idr":"1"}]}
json array return from server

Answer 1

you have to paste you code.
But why not go to the example:
http://docs.sencha.com/ext-js/4-0/#!/example/grid/array-grid.html

Answer 2

Ext.define('UserApp.view.uiTypes.LockFeature',{
extend: 'Ext.form.Panel',
collapsible: true,
flex: 1,
height: 200,
width: 600,
store: null,
itemId: 'lockfeature',
layout:{
type: 'table',
columns: 3
},
items:[{
xtype: 'checkbox',
boxLabel: 'Is Unreachable',
name: 'is_unreachable',
id: 'is_unreachable',
dataIndex: 'is_unreachable',
inputValue: 'true',
uncheckedValue: 'false',
value: true,
},{
xtype: 'textfield',
name: 'is_unreachable_update',
fieldLabel: 'Last Update',
},{
xtype: 'textfield',
name: 'update_by_user',
fieldLabel: 'By'
}],
initComponent: function(){
console.log(this.table);
console.log(this.record_id);
var table = this.table;
var parentTable = table.split('_');
console.log(parentTable[0]);
var store = Ext.create('UserApp.store.LockFeature');
store.getProxy().setExtraParam('table',parentTable[1]);
store.getProxy().setExtraParam('tab',parentTable[1]);
store.getProxy().setExtraParam('saving_table', table);
store.getProxy().setExtraParam('record_id',this.record_id);
this.store = store;
this.callParent(arguments);
store.load();
}
});