Django-Haystack基于多个索引字段进行搜索

我是django-haystack的新手 . 根据文档和教程，我能够基于文档内容（DataBase SQLITE）创建搜索应用程序 . 下一步，我已更新我的HTML模板以请求更多信息（例如：模型，所需的数据库链接等）

我不知道如何处理这个问题 . 在我正在使用的文件下面 . 我的知识仍然很基础，所以任何帮助都会非常感激 .

谢谢 .

search.html

{% extends 'base.html' %}

{% block content %}


    <h2> Doc Search Interface</h2>

    <form method="get" action=".">
        <table>
            <P>Select Car Model:</P>
            <P><LABEL ACCESSKEY=5><INPUT TYPE=checkbox NAME="CarModel" VALUE="A5"> A5</LABEL><BR>
            <LABEL ACCESSKEY=8><INPUT TYPE=checkbox NAME="CarModel" VALUE="A8"> A8</LABEL><BR>
            <LABEL ACCESSKEY=3><INPUT TYPE=checkbox NAME="CarModel" VALUE="A3"> A3</LABEL></P> 

            <tr>
            <P>Type and click enter for Search!</P>
                <input type="search" id="id_q" name="q" placeholder="Search" >
            </tr>
        </table>

        {% if query %}
            <h3>Let´s see if we have got here the document you were looking for...</h3>

            {% for result in page.object_list %}
                <p>
                    <a href="{{ result.object.get_absolute_url }}">{{ result.object.title }}</a>
                </p>
            {% empty %}
                <p>No results found.</p>
            {% endfor %}

            {% if page.has_previous or page.has_next %}
                <div>
                    {% if page.has_previous %}<a href="?q={{ query }}&amp;page={{ page.previous_page_number }}">{% endif %}&laquo; Previous{% if page.has_previous %}</a>{% endif %}
                    |
                    {% if page.has_next %}<a href="?q={{ query }}&amp;page={{ page.next_page_number }}">{% endif %}Next &raquo;{% if page.has_next %}</a>{% endif %}
                </div>
            {% endif %}
        {% else %}
            {# Show some example queries to run, maybe query syntax, something else? #}
        {% endif %}
    </form>
{% endblock %}

models.py

from django.db import models
from django.contrib.auth.models import User
from django.template import RequestContext
from django.http import HttpResponse

class Document(models.Model):

user_id = models.CharField(max_length=6, default='admin')
pub_date = models.DateTimeField()
title = models.CharField(max_length=200)
Link= models.URLField()
content = models.TextField()
CarModel= models.TextField()

    def get_absolute_url(self):
        return self.Link
    def __unicode__(self):
        return self.title

search_indexes.py

from haystack import indexes
from test3.models import Document

class DocumentIndex(indexes.SearchIndex, indexes.Indexable):
    text = indexes.EdgeNgramField(document=True, use_template=True)
    content_auto=indexes.EdgeNgramField(model_attr='content')
    CarModel=indexes.EdgeNgramField(model_attr='CarModel')
    def get_model(self):
        return Document        
    def index_queryset(self, using=None):
        """Used when the entire index for model is updated. Typically to avoid some results showing when admin do not want to""" 
        return self.get_model().objects

在这篇文章之后Using django haystack search with global search bar in template我更新了以下文件

urls.py

from django.conf.urls import url
from test3.views import MySearchView


# urls.py

urlpatterns =  [url(r'^/search/?$', MySearchView.as_view(), name='My_search_view'),]

views.py

from haystack.forms import HighlightedSearchForm
from haystack.query import SearchQuerySet
from haystack.generic_views import SearchView
from haystack.views import search_view_factory

class MySearchView(SearchView):
    """My custom search view."""
    def search_posts(request):
        post_type = str(request.GET.get('CarModel')).lower()
        print (str(request.GET.get('CarModel')).lower())
        sqs = SearchQuerySet().filter(CarModel__contains=post_type)
        clean_query = sqs.query.clean(post_type)
        result = sqs.filter(content=clean_query)
        view = search_view_factory(
            view_class=SearchView,
            template='search/search.html',
            searchqueryset=result,
            form_class=HighlightedSearchForm
            )
        return view(request)

但是，我仍然没有使它工作...搜索结果仍未按“模型”字段过滤 . 我想我必须添加额外的代码，但我不知道在哪里......