如何确定已登录的用户不是新用户？

Question

我已让用户使用Google登录名登录系统，但是每次用户使用Google登录名登录时，它总是重定向到同一位置，但是我想如果用户不是新用户，则应将其重定向到另一个页面。

直到现在，每次用户使用google登录名登录时，它将用户重定向到页面文件上传。 LOGIN_REDIRECT_URL = 'fileupload' 但是我无法将旧用户重定向到另一个位置。

登录重定向网址

LOGIN_REDIRECT_URL = 'fileupload'

html表单

{% load static %}

{% load crispy_forms_tags %}
{% block content %}
<div class="modal fade" id="Modal" aria-labelledby="ModalLabel" aria-hidden="true">
    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title" id="Label">User Profile</h5>
                <button type="button" class="close" data-dismiss="modal">&times;</button>
            </div>
            <div class="modal-body">
                <form action="{% url 'uploadprofile' %}" method="POST">
                    {%csrf_token%}
                    <div class="form-group">
                        <input type="hidden" name="username" class="form-control" id="username" value="{{user.username}}" style="font-family: 'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande', 'Lucida Sans Unicode', Geneva, Verdana, sans-serif" required>
                    </div>
                    <div class="form-group">
                        <label for="contact_no">Contact Number:</label>
                        <input type="tel" name="contact_no" class="form-control" id="contact_no" placeholder="Contact no." style="font-family: 'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande', 'Lucida Sans Unicode', Geneva, Verdana, sans-serif" required>
                    </div>
                    <div class="form-group">
                        <label for="dept_no">Department Number:</label>
                        <select id="dept_no" name="dept_no" class="form-control" style="font-family: 'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande', 'Lucida Sans Unicode', Geneva, Verdana, sans-serif" required>
                            <option value="1">Sales</option>
                            <option value="2">HR</option>
                            <option value="3">Business Dev.</option>
                            <option value="4">Engineering</option>
                            <option value="5">SCM</option>
                            <option value="6">CSIT</option>
                        </select>
                    </div>
                    <div class="form-group">
                        <label for="status">Status:</label>
                        <select id="status" name="status" class="form-control" style="font-family: 'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande', 'Lucida Sans Unicode', Geneva, Verdana, sans-serif" required>
                            <option value="0">Active</option>
                            <option value="1">Inactive</option>
                        </select>
                    </div>

                    <div class="form-group">
                        <label for="industry_seg">Industry Segment:</label>
                        <select id="industry_seg" name="industry_seg" class="form-control" style="font-family: 'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande', 'Lucida Sans Unicode', Geneva, Verdana, sans-serif" required>
                            <option value="software">Software</option>
                            <option value="programmer">Programmer</option>
                            <option value="testing">Testing</option>
                        </select>
                    </div>
                    <div class="form-group">
                        <label for="created_by">Created By:</label>
                        <input type="text" value="13" class="form-control" id="created_by" style="font-family: 'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande', 'Lucida Sans Unicode', Geneva, Verdana, sans-serif" required>
                    </div>
                    <div class="form-group">
                        <label for="updated_by">Updated By:</label>
                        <input type="text" value="13" class="form-control" id="updated_by" style="font-family: 'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande', 'Lucida Sans Unicode', Geneva, Verdana, sans-serif" required>
                    </div>
                    <div class="modal-footer">
                        <!--<button type="submit" id="btn-submit" class="btn btn-primary" onclick="saveTags()">Submit</button>-->
                        <input type="submit" class="btn btn-primary" value="Submit" id="upload">
                        <input type="reset" value="Reset" class="btn btn-secondary">
                    </div>
                </form>
            </div>
        </div>
    </div>
</div>
{% endblock %}