Ajax调用未更新模板Django [英] Ajax call not updating template django

问题描述

以下是详细信息。更改选择选项（即进行ajax调用）后，我能够在视图中获取更新的 questions_in_topic变量。 Ajax调用基于下拉列表中的选定值来更新 questions_in_topic变量。但是这些更改未反映在模板中。即在模板上，我仍然得到旧值。

urls.py

url(r'^interview/add/questions/library', recruiter_views.add_question_library, name='add_question_library'),

views.py

def add_question_library(request):
    question_topics = QuestionTopic.objects.values('question_id__description', 'topic_id__name','question_id','topic_id').order_by('topic_id__name','question_id__description')
    all_topics = Topic.objects.all()
    questions_in_topic = QuestionTopic.objects.values('question_id__description').order_by('question_id__description')

    if request.is_ajax():
        if 'topicId' in request.POST:
            print("xx")
            questions_in_topic = QuestionTopic.objects.filter(topic_id=request.POST['topicId']).values('question_id__description').order_by('question_id__description')
        else:
            print("yy")
            questions_in_topic = QuestionTopic.objects.values('question_id__description').order_by('question_id__description')

    print(questions_in_topic)
    context = { 'question_topics': question_topics, 'all_topics': all_topics,'questions_in_topic':questions_in_topic,}
    return render(request, 'recruiter/add_question_library.html', context)

add_question_library.html

<select id="topic" name="topic_list" class="form-control topic_select">
              {% for topic in all_topics %}
               <option data-topic="{{topic.id}}" value="{{topic.name}}">{{topic.name}}</option>
              {% endfor %}
            </select>    
<ul class="list-unstyled">
            {% for x in questions_in_topic %}
            <li class="list-unstyled">{{ x.question_id__description }}</li>
            {% endfor %}
            </ul>

ajax

var topicId = $(".topic_select option:selected").attr("data-topic");
    $(".topic_select").change(function(){
      var topicId = $(".topic_select option:selected").attr("data-topic");
      $.ajax({
          type: "POST",
          url: "{% url 'recruiter:add_question_library' %}",
          data: {
            topicId: topicId,
            'csrfmiddlewaretoken': '{{ csrf_token }}',
          },
          success: function(){
              // alert("Showing questions from topic " + topicId);
          }
      });
    });

推荐答案

在ajax调用之后，请求就从视图中发出了，您可以这样做：

With the request coming from view after the ajax call, you can do this:

// stuff
success: function(response){
   // $("taget").replaceWith($("target",response));
   $("ul.list-unstyled").replaceWith($("ul.list-unstyled",response));
}

您可能有多个 ul.list-unstyled 在您的项目中，建议您在列表中添加一个唯一ID。

You may have multiple ul.list-unstyled in your project, I suggest that you add a unique ID to the list.

这篇关于Ajax调用未更新模板Django的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！