Question

我用laravel 5.2 ajax开发了简单的形式来增加或减少产品数量的价值

这是查看ajax_help.blade.php

<head>

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>

    </head>

    <body>


    <form name="cart_form">

          {{ csrf_field() }}
    <input type="hidden" class="item_id" value="1">

    <div class="cart_quantity_button">
        <button type="button" class="cart_quantity_up"  data-increase="1" > + </button>
        <input class="cart_quantity_input" type="text" name="quantity" value="1" autocomplete="off" size="2">
        <button class="cart_quantity_down"  data-increase="0"> - </button>
    </div>
</form>



    <script>


    $('.cart_quantity_up,.cart_quantity_down').on('click', function(e) {
    e.preventDefault();
    var $this = $(this),
       // url = $this.data('route'),
        increase = $this.data('increase');
    updateQty(increase);
});    
        function updateQty( increase){         
     var $qty = $('.cart_quantity_input'),
        itemId = $('.item_id').val();
    $.ajax({
        type: 'POST',
        url:'cartajax',
        dataType: 'json', 
        data: {
          '_token': $('input[name="_token"]').val(),
            'cart_qty': $qty.val(),
            'item_id': itemId,
            'increase': increase
        },

        success:function(data){
            $qty.val(data.qty);
        }
    });
}

    </script>

    </body>

这是控制器功能ajax

public function ajax(Request $request){


   if ($request->ajax()) {
              $id = $request->item_id;

             $rowId = Cart::search(array('id' => $id));
             $item = Cart::get($rowId[0]);

             if ($request->increase) {

                 $n_qty = $item->qty + 1;



             } else {

                 $n_qty = $item->qty - 1;
             }

             Cart::update($rowId[0], $n_qty);

             return response()->json(['nqty' => $n_qty]);
   }
        }

这是路线

Route::get('/ajax',function(){return view('ajax_help');});
Route::Post('/cartajax','front@ajax');

但我得到500内部服务器错误。这是我的日志控制台 **

POST cartajax 500内部服务器错误191ms
HeadersPostResponseHTML Parametersapplication / x-www-form-urlencoded _token dKPRqSCprsNYhdtvsVJvX25hKsXZGS384mriDRAr cart_qty 1增加1 item_id 1来源 _token = dKPRqSCprsNYhdtvsVJvX25hKsXZGS384mriDRAr＆安培; cart_qty = 1＆安培; ITEM_ID = 1＆安培;增加= 1

**

请有人帮助我

laravel ajax上的500内部服务器错误

0 个答案: