<!--发布评论-->
<div id="js-pub-container" class="issques clearfix js-form">
    <div class="wgt-ipt-wrap pub-editor-wrap " id="js-pl-input-fake">
        <textarea id="js-pl-textarea" class="" placeholder="扯淡、吐槽、表扬、鼓励……想说啥就说啥！" ></textarea>
    </div>
    <input type="button" id="js-pl-submit" class="pub-btn" data-cid="452" value="发表评论">
    <p class="global-errortip js-global-error"></p>
</div>


{% block custom_js %}
<script type="text/javascript">
    //添加评论
    $('#js-pl-submit').on('click', function(){
        var comments = $("#js-pl-textarea").text()
        if(comments == ""){
            alert("评论不能为空")
            return
        }
        $.ajax({
            cache: false,
            type: "POST",
            url:"{% url 'course:add_comment' course.id %}",
            data:{'course_id':{{ course.id }}, 'comments':comments},
            async: true,
            beforeSend:function(xhr, settings){
                xhr.setRequestHeader("X-CSRFToken", "{{ csrf_token }}");
            },
            success: function(data) {
                if(data.status == 'fail'){
                    if(data.msg == '用户未登录'){
                        window.location.href="login.html";
                    }else{
                        alert(data.msg)
                    }

                }else if(data.status == 'success'){
                    window.location.reload();//刷新当前页面.
                }
            },
        });
    });

</script>

{% endblock %}

class AddCommentsView(View):
    """
    用户添加课程评论
    """
    def post(self, request):

        if not request.user.is_authenticated():
            # 判断用户登录状态
            return HttpResponse('{"status":"fail", "msg":"用户未登录"}', content_type='application/json')

        course_id = request.POST.get("course_id", 0)
        comments = request.POST.get("comments", "")
        if course_id >0 and comments:
            course_comments = CourseComment()
            course = Course.objects.get(id=int(course_id))
            course_comments.course = course
            course_comments.comments = comments
            course_comments.user = request.user
            course_comments.save()
            return HttpResponse('{"status":"success", "msg":"添加成功"}', content_type='application/json')
        else:
            return HttpResponse('{"status":"fail", "msg":"添加失败"}', content_type='application/json')

urlpatterns = [
    # 课程列表页
    url(r'^list/$', CourseListView.as_view(), name="course_list"),
    #课程详情页
    url(r'^detail/(?P<course_id>\d+)/$', CourseDetailView.as_view(), name="course_detail"),
    url(r'^info/(?P<course_id>\d+)/$', CourseInfoView.as_view(), name="course_info"),
    #课程评论
    url(r'^comment/(?P<course_id>\d+)/$', CommentsView.as_view(), name="course_comments"),
    #添加课程评论
    url(r'^add_comment/(?P<course_id>\d+)/$', AddCommentsView.as_view(), name="add_comment"),
]        

请老师帮我看一下是哪边出现问题了，