What I have is a listview, to show list of contacts. There is one model for that listview, a search box and also a label. Whenever the user enters text in the search box, to filter the contacts based on the text typed in the search box.


Here is my code

Qt Code: 
  1. // import QtQuick 1.0 // to target S60 5th Edition or Maemo 5
  2. import QtQuick 1.1
  3. import Qt 4.7
  4. import QtMobility.contacts 1.1
  5.  
  6. Rectangle {
  7.     property QtObject blah: con
  8.     width: 360
  9.     height: 640
  10.  
  11.     ListView
  12.     {
  13.         anchors.top:searchbox.bottom
  14.  
  15. height: parent.height
  16. width: parent.width
  17.         id: _ListViews
  18.  
  19.         model:ContactModel{
  20.  
  21.            filter:  DetailFilter {
  22.  
  23.                id:filter
  24.  
  25.                detail:ContactDetail.Name
  26.  
  27.                field:Name.FirstName
  28.  
  29.                value:searchbox.searchtext
  30.                matchFlags:Filter.MatchStartsWith
  31.  
  32.             }
  33.            sortOrders: SortOrder{
  34.                detail: ContactDetail.Name
  35.                field:Name.FirstName
  36.                direction: Qt.AscendingOrder
  37.  
  38.            }
  39. }
  40.  
  41.         delegate: Rectangle{
  42.             width: parent.width
  43.             height:50
  44.             Item {
  45.                 Column{
  46.  
  47.                     Text {
  48.             id: name
  49.             text:  model.contact.displayLabel
  50.                     }
  51.                 }
  52.             }
  53.  
  54.         }
  55.     }
  56.    SearchBox{
  57.        id: searchbox
  58.  
  59.            visible: true
  60.  
  61.  
  62. }
  63.  
  64.  
  65. }
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whenever i type a letter i get the error
TypeError: Result of expression 'model.contact' [undefined] is not an object.
if there are no matches in the contact list the app crashes



Now I need to display nothing found in the list view, when there are no matches in the list. How to achieve that.?