Django 1.5.4 专题21 haystack whoosh

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本文介绍如何在Django项目中使用Whoosh和haystack实现全文检索功能，包括安装配置、索引定义、视图处理及搜索结果展示等步骤。

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一.安装

pip install whoosh django-haystack

在django_test下创建whoosh文件夹

二.修改article/search_indexes.py的内容

import datetime
from haystack import indexes
from article.models import Article


class ArticleIndex(indexes.SearchIndex, indexes.Indexable):
    text = indexes.CharField(document=True, use_template=True)
    pub_date = indexes.DateTimeField(model_attr='pub_date')

    content_auto = indexes.EdgeNgramField(model_attr='title')
    
    def get_model(self):
        return Article

    def index_queryset(self, using=None):
        """Used when the entire index for model is updated."""
        return self.get_model().objects.all()

三.修改templates/search/indexes/article/article_text.txt

{{ object.title }}
{{ object.body }}

四.修改urls.py的内容

from django.conf.urls import patterns, include, url
#from django.contrib.auth.views import login, logout

# Uncomment the next two lines to enable the admin:
from django.contrib import admin
admin.autodiscover()

from django_test.forms import ContactForm1, ContactForm2, ContactForm3
from django_test.views import ContactWizard

import settings

urlpatterns = patterns('',
    (r'^articles/', include('article.urls')),
    (r'^accounts/', include('userprofile.urls')),

    # Uncomment the admin/doc line below to enable admin documentation:
    # url(r'^admin/doc/', include('django.contrib.admindocs.urls')),

    # Uncomment the next line to enable the admin:
    url(r'^admin/', include(admin.site.urls)),
    url(r'^facebook/', include('django_facebook.urls')),
    
    # user auth urls
    url(r'^accounts/login/$', 'django_test.views.login'),
    url(r'^accounts/auth/$', 'django_test.views.auth_view'),
    url(r'^accounts/logout/$', 'django_test.views.logout'),
    url(r'^accounts/loggedin/$', 'django_test.views.loggedin'),
    url(r'^accounts/invalid/$', 'django_test.views.invalid_login'),
    url(r'^accounts/register/$', 'django_test.views.register_user'),
    url(r'^accounts/register_success/$', 'django_test.views.register_success'),
    url(r'^contact/$', ContactWizard.as_view([ContactForm1, ContactForm2, ContactForm3])),
    url(r'^search/', include('haystack.urls')),
    url(r'^celery_test/', 'django_test.views.start_celery_task'),
    url(r'^celery_progress/', 'django_test.views.monitor_celery_task'),
)

if not settings.DEBUG:
    from django.contrib.staticfiles.urls import staticfiles_urlpatterns
   
    urlpatterns += staticfiles_urlpatterns()

五.修改article/views.py

from django.shortcuts import render_to_response, render
from article.models import Article, Comment
from django.http import HttpResponse
from forms import ArticleForm, CommentForm
from django.http import HttpResponseRedirect
from django.core.context_processors import csrf
from django.utils import timezone
from django.conf import settings
from haystack.query import SearchQuerySet

from django.template import RequestContext
from django.contrib import messages

import logging
    
logr = logging.getLogger(__name__)

def search_titles(request):
    articles = SearchQuerySet().autocomplete(content_auto=request.POST.get('search_text', ''))
    
    return render_to_response('ajax_search.html', {'articles' : articles})

六.修改ajax_search.html

{% if articles.count > 0 %}

{% for article in articles %}
    <li><a href="{{ article.object.get_absolute_url }}">{{ article.object.title }}</a></li>
{% endfor %}

{% else %}

<li>None to show!</li>

{% endif %}

七.运行

./manage.py rebuild_index