Django 使用Ajax进行前后台交互的示例讲解

<!--利用获取的数据进行表单内容的填充-->
<script>
$("#soft_id").change(function(){
var softtype=$("#soft_id").find("option:selected").text();
var soft={'type_id':softtype}
$.ajax( {
 type: 'GET',
 url:'/data/soft-filter/{{family}}',
 dataType: 'json',
 data:soft,
 success: function( data_get ){
 build_dropdown( data_get, $( '#min_version' ), '请选择最低版本' );//填充表单
 build_dropdown( data_get, $( '#max_version' ), '请选择最高版本' );
 build_div(data_get,$('#soft_affected'));
 }
 }); 
 });
 var build_dropdown = function( data, element, defaultText ){
 element.empty().append( '<option value="">' + defaultText + '</option>' );
 if( data ){
 $.each( data, function( key, value ){
 element.append( '<option value="' + key + '">' + value + '</option>' );
 } );
 }
 }
 var build_div = function( data, element){
 if( data ){
 element.empty();
 $.each( data, function( key, value ){
  element.append(' <li class="clearfix"> <div class="todo-check pull-left"><input name="chk" type="checkbox" value="'+value+'" /></div> <div class="todo-title">'+value+' </div><div class="todo-actions pull-right clearfix"><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="todo-complete"><i class="fa fa-check"></i></a><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="todo-edit"><i class="fa fa-edit"></i></a><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="todo-remove"><i class="fa fa-trash-o"></i></a></div> </li>');
 } );
 }
}
</script>

<!--选择并提交数据-->
<script>
//选择数据
function postselect (){
  var seleitem=new Array();
 $("input[name='chk']").each(function(i){
 if(!($(this).is( ":checked" )) ){
  seleitem[i]=$(this).val();
  // alert(seleitem[i]); 
}
});
//将排除后的数据提交到后台数据库
var soft={'type_id':seleitem}
$.ajax( {
 type: 'POST',
 url:'/data/soft-submit',
 dataType: 'json',
 data:soft,
 success: function( data_get ){
 }
 });
}
</script>

 <div style="overflow: hidden;" >
      <ul id='soft_affected' class="todo-list sortable">
      </ul>
 </div>

def soft_submit(request):
 if request.is_ajax():
  id=request.POST.get('type_id')
 return HttpResponse("success")
def soft_filter(request,fami):
 softtype=''
 ajax_release_version=[]
 release_version=[]
 if request.is_ajax():
  softtype=request.GET.get('type_id')
  soft_type=SoftTypeRef.objects.using('vul').filter(description=softtype)
  soft_tp_id=0
  for i in soft_type:
   soft_tp_id= i.soft_type_id
  web_soft=SoftWeb.objects.using('vul').filter(soft_type_id=soft_tp_id)
  for i in web_soft:
   ajax_release_ver=i.release_version
   ajax_release_version.append(ajax_release_ver)
  return HttpResponse(json.dumps(ajax_release_version), content_type='application/json')