jquery ajax/django – 在bootstrap模式中显示当前表单并重新显示验证是否成功

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我的用例是:

a)在引导模态fancy overlay effect stuff..中呈现通过ajax加载的表单.我跟着这些instructions.

这很好用. (见下面的代码)

b)将此表单提交回我的Django应用程序,尝试验证它,如果它没有验证,重新显示带有奇特引导模式中的错误的表单.

我可以通过ajax重新加载表单,但我无法在模态中再次表示它.

注意:我没有包含视图,因为它没有什么特别之处.仅实例化和验证表单.

下面有很多东西要读,所以如果您认为用例听起来很有趣,请继续…

我的taskList.html看起来像这样:

<table id="listItemTable" class="table table-bordered">
        <thead>
            <tr>
                <th>Name</th>
                <th>Edit</th>
            </tr>
        </thead>
    <tbody>
        <tr>
            <td>Task 1</td>
            <td><a class="editItem" href="/update/item/1/">edit</a></td>
        </tr>
    </tbody>
</table>

<div class="modal hide" id="itemFormModal"></div>
<div id="modalExtraJsPlaceholder"></div>

.js用于将显示引导模式绑定表单的表单加载到.jquery提交调用

$(document).ready(function() {
   modalConnect();
});

<script type="text/javascript">
 //connects the modal load for each <a> with class editItem
 //Functionality 1
     //loads an item edit form from the server and replaces the itemFormModal with the form
     //presents the modal with $("#itemFormModal").modal('show');
 //Functionality 2
     //loads some extra js "modalExtraJsHtml"
     //calls the function "submitItemModalFormBind" which has been loaded via "modalExtraJsHtml"

 function modalConnect(){
    $(".editItem").click(function(ev) { // for each edit item <a>
    ev.preventDefault(); // prevent navigation
    url = ($(this)[0].href); //get the href from <a>
    $.get(url,function(results){
       var itemForm = $("#ajax_form_modal_result",results);
       var modalExtraJs = $("#modalExtraJs",results);
       //get the html content
       var modalExtraJsHtml = modalExtraJs.html();
       //update the dom with the received results
        $('#itemFormModal').html(itemForm);        
        $('#modalExtraJsPlaceholder').html(modalExtraJsHtml);
        $("#itemFormModal").modal('show');
        submitItemModalFormBind(); //bind loaded form to ajax call
     },"html");
     return false; // prevent the click propagation
   })
}
</script>

从视图返回的itemForm如下所示:

<form id="#ajax_form_modal_result" class="well" method="post" action="/update/item/{{ item.id }}">
 <div id="ajax_form_modal_result_div">
     <div class="modal-header">
      <button type="button" class="close" data-dismiss="modal">×</button>
      <h3>Edit Item</h3>
    </div>
    <div class="modal-body">
         {% csrf_token %}
         {{form.as_p}}
    </div>
    <div class="modal-footer">
         <input class="btn btn-primary" type="submit" value="Save" />
         <input name="cancel" class="btn" type="submit" value="Cancel"/>
     </div>
    </div>
</form>

加载和显示模态工作正常.
但现在第二部分没有达到预期的效果.问题如下.如果表单未验证,则视图将返回表单.返回的表单应该在bootstrap模式中再次显示.但结果是,只有表单在浏览器中显示,其他一切都丢失了.没有CSS,没有表,只有表格.相当丑陋..因此我没有实现更新ajax_form_modal_result_div.任何人都可以帮我解决我做错了什么..!?

该视图还返回js函数’submitItemModalFormBind’,它阻止表单默认行为并通过ajax发送表单.

<div id="modalExtraJs">
 //ajax bind for update item form visualized via modal
 function submitItemModalFormBind(){
     var url = "{% url updateItem item.pk %}";
     $('#ajax_form_modal_result').submit(function(){
 $.ajax({
    type: "POST",url: "{% url updateTask item.pk %}",data: $(this).serialize(),success:function(response){
        var div = $("ajax_form_modal_result_div",response);
        $('#ajax_form_modal_result_div').html(div);
     },error: function (request,status,error) {
         console.log("failure");
         console.log(request.responseText);
     }

           });
          });
        return false;
       }    
</div>

解决方法

找到了一种工作方法(基于这个 solution – 并通过处理无效形式对其进行了强化)并将其发布给任何想要使用django的令人惊叹的漂亮引导模态的人.上面代码的主要问题是我没有正确地禁用提交按钮的默认行为,并且加载其他js的方法不是一个好主意.所以我改变了策略.

在documentReady或ajaxStop事件上,将超链接的click事件绑定到modalConnect函数.请注意,如果你有某种更新表格内容的ajax(我有),你只需要ajaxStop函数

<script type="text/javascript">
    $(document).ready(function() {
        modalConnect();
    });
</script>

<script type="text/javascript">
$( document ).ajaxStop( function() {
    modalConnect();
});
</script>

modalConnect函数加载我们想要在模态中呈现的表单和formUpdateURLDiv:

<script type="text/javascript">
    function modalConnect()
        {
            //unbind the click event. If not done we will end up with multiple click event bindings,since binding is done after each ajax call.
            $(".editItem").unbind('click');
            //bind the click event
            $(".editItem").click(function(ev) { // for each edit item <a>
                ev.preventDefault(); // prevent navigation
                var url = this.href; //get the href from the <a> element
                $.get(url,function(results){
                  //get the form
                  var itemForm = $("#ajax_form_modal_result",results);
                  //get the update URL
                  var formUpdateURLDiv = $("#formUpdateURL",results);
                  //get the inner html of the div
                  var formUpdateURL = formUpdateURLDiv.html();
                  //update the dom with the received form
                  $('#itemFormModal').html(itemForm);
                  //show the bootstrap modal
                  $("#itemFormModal").modal('show');
                  $(document).ready(function () {
                     //bind the form to an ajax call. ajax call will be set to the received update url
                     submitItemModalFormBind(formUpdateURL);
                  });
                },"html");
                return false; // prevent the click propagation
            })
        }
</script>

formUpdateURL包括生成的服务器(参见下面的包含视图)url,加载的表单必须对其进行表单提交调用.我们使用这个url来“初始化”submitItemModalFormBind函数

<script type="text/javascript">
       function submitItemModalFormBind(url){
         //bind the form. prevent default behavior and submit form via ajax instead
         $('#ajax_form_modal_result').submit(function(ev){
             $.ajax({
                type: "POST",url: url,success:function(response,textStatus,jqXHR){
                     var form = $("#ajax_form_modal_result_div",response);
                     //form is returned if it is not valid. update modal with returned form
                     //change this "if" to check for a specific return code which should be set in the view
                     if (form.html()) {
                        console.log('Form was invalid and was returned');
                        //update modal div
                         $('#ajax_form_modal_result_div').html(form);
                         $("#itemFormModal").modal('show');
                      }
                      //form is not returned if form submission succeeded
                      else{
                        //update the entire document with the response received since we received a entire success page and we want to reload the entire page
                        document.open();
                        document.write(response);
                        document.close();
                        //sort by modified date descending

                        //var notificationDiv = $("#notification",response);
                        //$('#notification').html(notificationDiv.html());
                        console.log('Form was valid and was not returned');
                        $("#itemFormModal").modal('hide');
                        }
                },error) {
                            var div = $("ajax_form_modal_result_div",request.responseText);
                            $('#ajax_form_modal_result_div').html(div);
                            //implement proper error handling
                            console.log("failure");
                            console.log(request.responseText);
                        }
                    });
                    return false;
                });
              }
</script>

..并查看服务器上发生了什么,请参阅下面处理逻辑的视图:

class UpdateTaskModalView(LoginrequiredMixin,View):
template = 'list_management/crud/item/update_via_modal.html'

def get_logic(self,request,task_id,**kwargs):
    task = get_object_or_404(Task.objects,pk=task_id)
    task_form = TaskForm(instance=task)
    context = {
               'model_form': task_form,'item': task,}
    return context

def post_logic(self,pk=task_id)
    task_form = TaskForm(request.POST,instance=task)
    if task_form.is_valid():
        task = task_form.save(commit=False)
        task.modified_by = request.user
        task.save()
        messages.add_message(request,messages.INFO,'Item "%s" successfully updated' % (task.name))
        return ('redirect',HttpResponseRedirect(reverse('show_list_after_item_update',kwargs={'list_id':task.list.pk,'item_id':task.pk})))
    context = {
        'model_form' : task_form,'list': task.list,}
    return ('context',context)

def get(self,**kwargs):
    context = self.get_logic(request,**kwargs)
    return render_to_response(
        self.template,context,context_instance = RequestContext(request),)

def post(self,**kwargs):
    post_logic_return = self.post_logic(request,**kwargs)
    if post_logic_return[0] == 'redirect':
        return post_logic_return[1]
    if post_logic_return[0] == 'context':
        context = post_logic_return[1]
        return render_to_response(
            self.template,)

..表单模板已包含在我的问题中:ajax_form_modal_result_div,您只需要提供formUpdateURL.我是通过模板完成的,现在我写这篇文章似乎很奇怪.可以通过视图上下文轻松提供.

Voila – 带有Bootstrap模式的Django表单!增加你的UI!

我希望这有助于某人解决类似的问题.

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