javascript - 丹戈

我一直在尝试将数据从AJAX调用转换view.py为HTML并重新转换为HTML：

jQuery / JavaScript

    function getCookie(name) {
        var cookieValue = null;
        if (document.cookie && document.cookie !== '') {
            var cookies = document.cookie.split(';');
            for (var i = 0; i < cookies.length; i++) {
                var cookie = cookies[i].trim();
                // Does this cookie string begin with the name we want?
                if (cookie.substring(0, name.length + 1) === (name + '=')) {
                    cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
                    break;
                }
            }
        }
        return cookieValue;
    }

    function csrfSafeMethod(method) {
        // these HTTP methods do not require CSRF protection
        return (/^(GET|HEAD|OPTIONS|TRACE)$/.test(method));
    }

    $(document).ready(function(){ 

        var csrftoken = getCookie('csrftoken');

        $.ajaxSetup({
            beforeSend: function(xhr, settings) {
                if (!csrfSafeMethod(settings.type) && !this.crossDomain) {
                    xhr.setRequestHeader("X-CSRFToken", csrftoken);
                }
            }
        });

        // AJAX CALL TO VIEW
        $('a.play').click(function(e){
            e.preventDefault();
            var song_id = $(this).attr('id');
            alert(song_id);
            $.ajax({
                url: $(this).data('href'),
                type: 'POST',
                content: 'application/json; charset=utf-8',
                data: {
                    'song_id': song_id
                },
                dataType: 'json',
                success: function(html) {
                    alert(html);
                    $('.player').replaceWith(html);
                },
            });
        });
    });

views.py

    from django.shortcuts import render
    from django.http import Http404, JsonResponse
    from django.core import serializers
    from django.template.loader import render_to_string

    from .models import Song

    def change_song(request):
        if request.method == "POST":
            request.session['featured_song'] = request.POST.get('song_id', '')
            featured_song_id = request.session['featured_song']
            obj = Song.objects.get(pk=featured_song_id)
            song_list = Song.objects.all().order_by('-date') # list of objects
        context = {
            "featured_song": obj,
            "song_list": song_list,
        }
        return render_to_string("music/player.html", context)

因此，在收到AJAX调用的POST之后，我尝试将其返回以提醒其内容（调试）。第一个警报song_id按原样应返回ID，第二个警报甚至不会运行。当尝试调试时（我不记得确切的情况），当它运行时，第二个alert()仅返回整个html页面，而不仅仅是该部分。

注意： music/player.html在视图上基本上是.player容器。它没有包含，扩展或扩展其他模板的块。