如何更新 parse.com 中的用户对象而不是创建新的记录对象？

Question

使用 Parse.com 和 JavaScript SDK。

以下代码将数据保存为解析中的新用户对象。但我希望它真正更新当前登录的用户，而不是创建新的用户对象。

我已阅读此处的说明https://www.parse.com/docs/js_guide#objects-updating 但我仍然不确定我缺少什么。我有一种不好的预感，它可能很简单？

      <div class="container">
                        <!--Data is stored in these divs but not they are not displayed to the user!-->

                        <div id="div_uname" style="display:none;"></div>
                        <div id="div_email" style="display:none;"></div>
                        <div id="div_gender" style="display:none;"></div>
                        <div id="div_password" style="display:none;"></div>
                        <div id="profile_pic"></div>
                        <div id="profile_pic_url"></div>

                    </div>  

                    <!--This is what the user sees. The id calls JS that enables the input field to be edited!-->

                    <!--Displays user profile information on the page!-->

                    <div class="container">

                        <h4>General Features</h4>
                        <ul>

                            <li>
                                <input type="text" class="div_uname" id="username" value="" />
                            </li>
                            <li>
                                <input type="text" class="div_email" id="email" value="" />
                            </li>
                            <li>
                                <input type="text" class="div_gender" id="gender" value="" />
                            </li>
                            <li>
                                <input type="password" class="div_password" id="password" value="" />
                            </li>
                            <li>
                                <input type="file" class="div_profile_pic_url" id="profile_pic_url" value="" />
                            </li>

                            <li>
                                <button class="button button-blue" id="save">Save Name</button>

                            </li>

                        </ul>
                    </div>



                    <!--Footer stuff-->

                    <div class="container">

                        <div class="footer-socials">
                            <a href="#" class="facebook-footer"></a>
                            <a href="#" class="goup-footer"></a>
                            <a href="#" class="twitter-footer"></a>
                        </div>
                        <p class="copyright uppercase center-text no-bottom">Copyright 2014
                            <br>All rights reserved</p>

                        </div>
                        <div style="height:350px"></div>
                    </div>





                    <!--This script displays the user profile data on the page and allows the user to update the details -->
                    <script type="text/javascript">
                        Parse.initialize("xxx", "xxx");




        // Makes sure the current user is selected//

        // Pulls the user data from parse and stores in variables//

        var user = Parse.User.current();
        user.fetch().then(function(fetchedUser) {
            var username = fetchedUser.getUsername();
            var email = fetchedUser.getEmail();

            var password = user.get("password");
            var gender = user.get("gender");
            var imgPaht = user.get("pic");
            var profile_pic_url = user.get("pic");


            // Outputs the data to the users view//

            // Adds the contents of the variables into the html divs//

            document.getElementById("div_uname").innerHTML = username;
            $(".div_uname")
            .val($("#div_uname").text())

            document.getElementById("div_email").innerHTML = email;
            $(".div_email")
            .val($("#div_email").text())

            document.getElementById("div_gender").innerHTML = gender;
            $(".div_gender")
            .val($("#div_gender").text())

            document.getElementById("div_password").innerHTML = password;
            $(".div_password")
            .val($("#div_password").text())

            $('<img src="' + imgPaht + '">').load(function() {
                $(this).width(400).height(400).appendTo('#profile_pic');
            })


        }, function(error) {

        });




    // Saves the users profile information 
    $('#save').click(function (e) {
        ProfileSave();
    }); 
    ///

    function ProfileSave() {

    var User = Parse.Object.extend("_User");

    var profileSave = new User();

        var saveusername = $('#username').val();
        var saveemail = $('#email').val();
        var savegender = $('#gender').val();
        var savepassword = $('#password').val();

        profileSave.set("username", saveusername);
        profileSave.set("email", saveemail);
        profileSave.set("gender", savegender);
        profileSave.set("password", savepassword);

        profileSave.save(null, {
            success: function(profileSave) {
    profileSave.save()
    },
    error: function(profileSave, error) {
     // Fail

    }
    });         

    }
<script/>

Answer 1

看起来您需要在成功函数中再次调用profileSave.save()，但这次没有参数。

Answer 2

其实这很容易解决。下面现在更新了对象，唯一改变的部分是：

而不是使用 var profileSave = Parse.User.current();

我用过

var profileSave = Parse.User.current();

现在说得很有道理，一些有用的背景知识也可以在这里找到 Update user object in parse.com