Best way to load Form from Complex store

[Designworxz]

Is there any best way to load form from Comples store record?

Form

items:[
								{  xtype:'fieldset',
									 defaults: {
											required: true,	
											labelAlign: 'left',
											labelWidth: '27.5%'
										},
									items:[{
											xtype: 'textfield',
											name : 'firstname',
											label: 'Name',
											useClearIcon: true,
											autoCapitalize : false
										   },
										   {
											xtype: 'textfield',
											name : 'lastname',
											label: 'Surname',
											useClearIcon: true,
											autoCapitalize : false
										  },
{
											xtype: 'textfield',
											name : 'No',
											required: false,
											label: 'No',
											useClearIcon: true,
											autoCapitalize : false
										  },
										  {
											xtype: 'textfield',
											name : 'Street',
											required: false,
											label: 'Street',
											useClearIcon: true,
											autoCapitalize : false
										 },
										 {
											xtype: 'textfield',
											name : 'City',
											required: false,
											label: 'City',
											useClearIcon: true,
											autoCapitalize : false
										 }
]

Store data

[{"PersonDetail":{"Name":"Peter","Surname":"scott"},"PostalAddress":{"No":"1","Street":"Newland St","City":"AUS"}}]

[mitchellsimoens]

I would merge all values into one Object