总计商品

app/Http/Controllers/Admin/OrderController.php

         $is_fx = env('IS_FX');
         $data = OrderGoodsSkus::where('order_id', $id)->where('is_del', 0)->get();
         if(empty($data)) exit('0');
+        $total = 0;
         foreach($data as $good){
             $good->goods_name = Goods::where('id', $good->goods_id)->pluck('name');
             $sku = GoodsSkus::select('code', 'propsName', 'referenceCost', 'outPrice')->where('id', $good->sku_id)->first();
             if($good->cost == null){
                 $good->cost = $is_fx == 0? $sku->referenceCost : $sku->outPrice;
             }
+            $total += $good->cost * $good->num;  
         }
-
-        exit(json_encode($data));
+        $total = round($total, 2);
+        $res = array();
+        $res['data'] = $data;
+        $res['total'] = $total;
+        exit(json_encode($res));
     }
 
 }

resources/views/order/orderlist.blade.php

                                 
                             </tbody>
                         </table>
+                        <div id='g_total'></div>
                         <div style="float:right">
                             <button class="btn" data-dismiss="modal" aria-hidden="true">关闭</button>
                         </div>
                 success:function(data){
                     if(data != '0'){
                         data = eval("("+data+")");
+                        var total = data.total;
+                        data = data.data;
                         var str = '';
                         for (var i = 0, l = data.length; i < l; i++) {
                             var item = data[i];
                             str += '</tr>';                                              
                         } 
                         $("#g_tr").html(str);                  
+                        $("#g_total").html('总计：'+total+'元');                  
                         $("#modal-demo3").modal("show");
                     }