添加类别建议，Tango with django，第15.2章

Question

按照tango_with django教程，第15.2章，添加内联建议，但是当我在搜索框中输入代码时，代码无法按预期运行，即使我输入的名称是有效类别，它也不会返回任何类别 这是代码

views.py

<ul class = "nav nav-list">
<div class = "du">
{% if cat_list %}
    {% for cat in cat_list %}
        <li><a href = "/rango/category/{{cat.url}}">{{cat.name}}</a></li>
    {% endfor %}
{% else %}
    <li>No categories at present.<li>
{% endif %}
</div>

category_list.html

<div class = "well sidebar-nav">
        <ul class = "nav nav-list">

            <li class = "nav-header">Find a Category !</li>
            <form>
            <label></label>
            <li><input class = "search-query" type = "text" name="suggestion" value ="" id = "suggestion"/><li>
            </form>
        </ul>

    {% if cat_list %}
            <div id = "cats">
                {% include 'category_list.html' %}
            </div>
    {% endif %}

 </div>

表格

url(r'^suggest_category/$',suggest_category),

urls.py

$(document).ready(function(){
$('#likes').click(function(){
    var catid;
    catid = $(this).attr("data-catid");
    $.get('/rango/like_category/', {category_id:catid},function(data){
            $('#like_count').html(data);
            $('#likes').hide();
        });
});

$('#suggestion').keyup(function(){
    var query;
    query = $(this).val();
    $.get('/rango/suggest_category/',{suggestion:query}, function(data){
        $('#cats').html(data);
    });
});
});

rangoajax.js

[ $(git rev-parse --show-toplevel) == $(pwd) ]