如何在 update.js shopify 中使用动态变量

how to use dynamic variable in update.js shopify

我想让你在 update.js 中使用测试变量,但是当我用作变量时它显示错误但是当我直接传递这个值时它起作用了 谁能告诉我如何使用动态变量来更改购物车中现有产品的数量

我更新了我的代码它将允许用户仅添加 5 个项目超过 5 个项目将被删除它将创建如下所示的字符串 32082238341235:0,39470423048307:0,32164693278835:0,32164693835891:1

最后所有 ID 和数量将由 update.js

更新

我在最后一步显示错误 {"status":404,"message":"购物车错误","description":"找不到变体"}

当我尝试更新所有产品时

jQuery.getJSON('/cart.js', function(cart) {
  var items_new = cart.items;
  var count = 0;
  count = cart.item_count;
  var item_to_remove = count - 5;

  if (count > 5) {
    var item_to_remove = count - 5;
    var combine = ""
    if (item_to_remove > 0) {
      for (var i = 0; i < items_new.length; i++) {
        if (count > 5) {
          var c_id = items_new[i].variant_id;
          var c_quantity = items_new[i].quantity;

          if (c_quantity >= item_to_remove) {


            var q = c_quantity - item_to_remove
            var data_multiple = c_id + ":" + q + ",";


            debugger;



            count = count - item_to_remove;
            console.log(data_multiple);
            var combine = combine + data_multiple;

          } else {

            var data_single = c_id + ":" + 0 + ",";

            count = count - c_quantity;
            item_to_remove = item_to_remove - c_quantity
            console.log(data_single)

            var combine = combine + data_single;
          }

        }

      }


      console.log(combine.slice(0, -1));
      var test = combine.slice(0, -1);

      console.log({
        updates: {
          test
        }
      });
      jQuery.post('/cart/update.js', {
        updates: {
          test
        }
      });





    }
    t._rerenderCart()

  }
  t.sidebarDrawer.open()
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

您需要将 test 作为对象存储在括号 {} 中,然后使用扩展 ... 运算符传递给 updates

var test = {39470423048307 : 0, 32164693278835 : 0, 32164693835891 : 1};
console.log({updates: {...test}});
jQuery.post('/cart/update.js', {updates:{...test}});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

在更新后的代码中,您将字符串而不是对象传递给 updates。您应该从 for 循环内的数据创建一个对象并将该对象传递给 updates。查看带有 // CHANGE HERE:

的行
...
var combine = {};
if (item_to_remove > 0) {
  for (var i = 0; i < items_new.length; i++) {
    if (count > 5) {
      var c_id = items_new[i].variant_id;
      var c_quantity = items_new[i].quantity;

      if (c_quantity >= item_to_remove) {


        var q = c_quantity - item_to_remove;
        
        // CHANGE HERE
        combine[c_id] = q;
        
        count = count - item_to_remove;

      } else {
        // CHANGE HERE
        combine[c_id] = 0;

        count = count - c_quantity;
        item_to_remove = item_to_remove - c_quantity;
      }
      console.log(combine);
    }

  }

  // CHANGE HERE
  var test = combine;

  console.log({
    updates: test
  });
  jQuery.post('/cart/update.js', {
    updates: test
  });
...