Question

In my Django application, I have a delete button to delete a particular file instance.

 {% for file in file_list %}
    <tr>
        <td>{{ file.filename }}</td>
        <td>
            <!-- passing the file.pk argument to JS function -->
            <a data-toggle="modal" href="#fileConfirmDeleteModal" data-id="{% url 'delete_file' file.pk %}">
                <button class="btn btn-danger">Delete</button>
            </a>
        </td>
    </tr> 
 {% endfor %}

In my JavaScript function call I am displaying the modal confirmation box to delete the file:

  <script type="text/javascript">
     $(document).on("click", ".open-AddBookDialog", function () {
     var file_pk = $(this).data('id'); //the 'file.pk' instance is retrieved

     //how to pass 'file_pk' argument to the <a href> tag in the modal
     $(".modal-footer #delete_file_href").val( file_pk );

     $('#fileConfirmDeleteModal').modal('show');
    });
  </script>

Below is the Modal dialog which contains a 'Yes' and 'No' button; on clicking 'Yes', a specific URL pattern needs to be called i.e. 'delete_file' file.pk

     <!--Modal: fileConfirmDeleteModal-->
       <div class="modal fade" id="fileConfirmDeleteModal" tabindex="-1"   role="dialog" aria-labelledby="exampleModalLabel"
  aria-hidden="true">
           <div class="modal-dialog" role="document">
           <!--Content-->
             <div class="modal-content text-center">
             <!--Header-->
                <p class="heading">Are you sure?</p>
             <!--Body-->
                <div class="modal-footer flex-center">
                 <!--Here I need to append the file.pk value to the 'delete_file url name'-->
                  <a href="{% url 'delete_file' file.pk=file_pk %}" id="delete_file_href">
                    <button>Yes</button>
                  </a>
                   <button class="btn btn-danger" data-dismiss="modal">No</button>
               </div>
             </div>
          <!--/.Content-->
          </div>
      </div>

On attempting the above code, I encounter the following error:

 Exception Type: TemplateSyntaxError at /mysite/file_log/
 Exception Value: Could not parse the remainder: '=file_pk' from 'file.pk=file_pk'

The urlpattern being:

  path('delete_file/<int:pk>', views.FileDeleteView.as_view(), name='delete_file'),

I am unable to understand how to append that variable value 'file_pk' to inside the url name {% %} of href tag.

Answer 1

对于模板错误，应首先写出参数名称（file_pk），然后写值（file.pk）：

{% url 'delete_file' file_pk=file.pk %}

对于modale问题，您可以在第一个模板中将删除URL作为data-delete-url参数进行传递：

{% for file in file_list %}
    <tr>
        <td>{{ file.filename }}</td>
        <td>
            <!-- passing the file.pk argument to JS function -->
            <a data-toggle="modal" href="#fileConfirmDeleteModal"
               data-id="{{ file.pk }}" data-delete-url="{% url 'delete_file' file_pk=file.pk %}"> 
               <button>Delete</button>
            </a>
        </td>
    </tr> 
 {% endfor %}

然后使用以下值更新modale URL：

  <script type="text/javascript">
     $(document).on("click", ".open-AddBookDialog", function () {
     var delete_url = $(this).data('delete-url'); 
     $(".modal-footer #delete_file_href").prop( delete_url );

     $('#fileConfirmDeleteModal').modal('show');
    });
  </script>

如何将对象实例传递给<a href=""> tag within a Django modal dialog?

1 个答案: