Question

使用parse.com和JavaScript SDK。

我已经搜索过，但找不到合适的答案。

当我使用当前用户时，此功能有效。但它应该做的是使用存储在变量friendRequest中的值来查询已经存在于解析中的结果。一旦用户点击FriendRequest

内页面上显示的其中一个图像，就会填充div id container变量

我收到以下错误，我不确定如何修复它？是因为FriendRequest未定义吗？

未捕获错误：无法序列化未保存的Parse.Object

附加屏幕截图。

以下是返回错误的函数。

   function FriendProfile() {

    var FriendRequest = Parse.Object.extend("FriendRequest");
    var friendRequest = new FriendRequest();
    friendRequest.id = window.selectedFriendRequestId;


    var myBadges = Parse.Object.extend("myBadges");
    var query = new Parse.Query(myBadges);

    query.equalTo("SentTo", friendRequest);
    query.find({
        success: function (results) {
            // If the query is successful, store each image URL in an array of image URL's
            imageURLs = [];
            for (var i = 0; i < results.length; i++) {
                var object = results[i];
                imageURLs.push(object.get('BadgeName'));
            }
            // If the imageURLs array has items in it, set the src of an IMG element to the first URL in the array
            for (var j = 0; j < imageURLs.length; j++) {
                $('#imgs').append("<img src='" + imageURLs[j] + "'/>");
            }
        },
        error: function (error) {
            // If the query is unsuccessful, report any errors
            alert("Error: " + error.code + " " + error.message);
        }
    });
}

以下是如何填充friendRequest变量。

var currentUser = Parse.User.current();
        var FriendRequest = Parse.Object.extend("FriendRequest");

        var query = new Parse.Query(FriendRequest);
        query.include('toUser');
        query.include("myBadge");
        query.equalTo("fromUser", currentUser);
        query.equalTo("status", "Request sent");

        query.find({
            success: function (results) {
                var friends = [];
                for (var i = 0; i < results.length; i++) {
                    friends.push({
                        imageURL: results[i].get('toUser').get('pic'),
                        friendRequestId: results[i].id,
                        username: results[i].get('toUser').get('username')
                    });
                }

                // TW: replaced dynamic HTML generation with wrapper DIV that contains IMG and name DIV
                _.each(friends, function (item) {
                    // using a wrapper so the user can click the pic or the name
                    var wrapper = $('<div class="wrapper" data-friend-request-id="' + item.friendRequestId + '"></div>');
                    wrapper.append('<img class="images" src="' + item.imageURL + '" />');
                    wrapper.append('<div>' + item.username + '</div>');
                    $('#container').append(wrapper);
                });

            },
            error: function (error) {
                alert("Error: " + error.code + " " + error.message);
            }
        });


         ///SECTION 2 -Click/Select friend image to be captured and used with section 3//////////

         // set up event handler
        $('#container').on('click', '.wrapper', function () {
            console.log(this);
             FriendProfile();
            var wrapper = $(this);
            console.log(wrapper.data('friendRequestId'));
            // remove selected from all wrappers in case one was already selected
            $('#container .wrapper').removeClass('selected');
            // mark clicked wrapper as selected
            wrapper.addClass('selected');
            // save friendRequestId as a global that can be read by other code
            window.selectedFriendRequestId = wrapper.data('friendRequestId');
            // enabled button
            $('#simulateAddBadge').removeAttr('disabled');
        });

        $(document).ready(function () {

            $('.go').css('cursor', 'pointer');
            $('.go').click(function (e) { // Button which will activate our modal
                               $(this).width(100).height(100).appendTo('#badgeselect');

            });
            return false;

        });

enter image description here

Answer 1

如果在调用window.selectedFriendRequestId时未设置FriendProfile()，则会出现错误。在那里添加console.log(window.selectedFriendRequestId);以帮助您进行调试。

您需要检查您所遵循的逻辑，您可能希望将friendRequestId作为函数的参数，并在单击处理程序中提取值并将其作为参数传递。目前您的＆＃34;第2节＆＃34;代码调用函数然后设置值。

简化示例：

function FriendProfile(friendRequestId) {
    // query based on friendRequestId ...
}

// other code that calls function
$('#container').on('click', '.wrapper', function () {
    var wrapper = $(this);
    var friendRequestId = wrapper.data('friendRequestId');
    FriendProfile(friendRequestId);
    // other code ...
});

如何解决未捕获的错误：无法序列化未保存的Parse.Object错误消息？

1 个答案: