"Django UpdateView无法获取对象的值，而是显示为空白"

Question

所以我创建了一个django网站，我有一个编辑按钮。 编辑显示一个弹出窗口，其中包含一些要编辑的表单。问题是要编辑的表单是空白的！而不是以前的数据。e、 g- ServerName=“Yossi”当我单击“编辑”而不是表单中的“Yossi”时，我什么都没有。在

我需要添加什么到索引.html或者PostEdit的类，这样我就可以在表单中保留以前的数据，而不是空白表单？在

在模型.py-在

from django.db import models
# Create your models here.
class serverlist(models.Model):
        ServerName = models.CharField(max_length = 30)
        Owner = models.CharField(max_length = 50)
        Project = models.CharField(max_length = 30)
        Description = models.CharField(max_length = 255)
        IP = models.CharField(max_length = 30)
        ILO = models.CharField(max_length = 30)
        Rack = models.CharField(max_length = 30)
        Status = models.CharField(max_length = 30)
        #date = models.DateTimeField(auto_now=True)

在视图.py-在

^{pr2}$

在服务器列表.html-在

                       <button type="button" class="btn btn-outline-primary" data-toggle="modal" href="#edit-server-{{server.id}}"
                         data-target="#Edit{{server.id}}"> &nbsp&nbspEdit&nbsp                   <i class="fa fa-pencil"></i></button>
&nbsp


                                                <div id ="Del{{server.id}}" class="modal fade" role="document">
                                                        <div class="modal-dialog" id="delete-server-{{server.id}}">
                                                                        <div class="modal-content">
                                                                                <div class="modal-header">
                                                                                        <h5 class="modal-title">Delete Confirmation</h5>
                                                                                        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                                                        <span aria-hidden="true">&times;</span>
                                                                </button>
                                                                                </div>
                                                                                <div class="modal-body">
                                                                                <form action="{% url 'delete_post' server.id %}" method="post">{% csrf_token %}
                                                                                    <h6>Are you sure you want to delete {{ server.ServerName }}?</h6>
                                                                                                <br>
                                                                                    <center><input type="submit" class="btn btn-danger btn-md" value="Confirm"/>
                                                                                                <button type="submit" class="btn btn-secondary" data-dismiss="modal">Cancel</button></center>

                                                                                </form>
                                                                        </div>
                                                                        </div>


                                                </div>
                        </div>


                        <div class="modal fade bd-example-modal-sm" id="Edit{{server.id}}" tabindex="-1" role="dialog" aria-labelledby="mySmallModalLabel" aria-hidden="true">
  <div class="modal-dialog modal-sm">
    <div class="modal-content">
                        <div class="modal-header">
                                <h5 class="modal-title">Edit Server</h5>
                                <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                                        <span aria-hidden="true">&times;</span>
                                </button>
                        </div>
                                <div class="modal-body">
                                        <form action="{% url 'edit_post' server.id %}" method="post"> {% csrf_token %}
                                <!--<center>    {{ form.as_p }} </center> -->
                                                        {% for field in form %}
                                                                <div class="fieldWrapper">
                                                {{ field.errors }}
                                                                        <!-- {{ field.label_tag }} -->

                                <small><b>{{ field.html_name }}<p align="left"></b> {{ field }}</small> </p>

                                                {% if field.help_text %}
                                                <p class="help">{{ field.help_text|safe }}</p>
                                                {% endif %}

                                                        </div>


                                {% endfor %}
                                <center><h2> <button type="submit" class="save btn btn-success btn-lg">Confirm</button></h2>
                                <h2><button type="submit" class="btn btn-secondary" data-dismiss="modal">Cancel</button></h2></center>
                                </form>
                        </td>
                        </div>
                </tr>
                        {% endfor %}