利用pip一次安装安装包
haystack:全文检索的框架
whoosh:纯Python编写的全文搜索引擎
jieba:一款免费的中文分词包
pip install django-haystack pip install whoosh pip install jieba
创建文件夹whoosh_index
创建文件夹: templates/search、templates/search/indexes、templates/search/indexes/df_goods
被检索的模型对象的目录下创建文件(文件名称固定)
df_goods/search_indexes.py
# coding=utf-8 from haystack import indexes from .models import GoodsInfo class GoodsInfoIndex(indexes.SearchIndex, indexes.Indexable): text = indexes.CharField(document=True, use_template=True) def get_model(self): # 返回对象类即可 return GoodsInfo def index_queryset(self, using=None): return self.get_model().objects.all()
创建文件(固定格式: 模型类名_text.txt): templates/search/indexes/df_goods/goodsinfo_text.txt
文件内容: 对象的属性
{{ object.gtitle }} {{ object.gjianjie }} {{ object.gcontent }}
创建显示页面:
templates/search/indexes/search.html
manas/settings.py
# 添加搜索引擎 HAYSTACK_CONNECTIONS = { 'default': { # 指定使用的搜索引擎 'ENGINE': 'haystack.backends.whoosh_cn_backend.WhooshEngine', # 指定索引文件存放位置 'PATH': os.path.join(BASE_DIR, 'whoosh_index'), } }
#新增的数据自动生成索引 HAYSTACK_SIGNAL_PROCESSOR = 'haystack.signals.RealtimeSignalProcessor'
manas/urls.py
创建ChineseAnalyzer.py文件
- 保存在haystack的安装文件夹下,Linux路径如“/home/python/.virtualenvs/django_py2/lib/python2.7/site-packages/haystack/backends”
- 保存在haystack的安装文件,Window路径 C:\Users\Administrator\AppData\Roaming\Python\Python35\site-packages\haystack\backends.
import jieba from whoosh.analysis import Tokenizer, Token class ChineseTokenizer(Tokenizer): def __call__(self, value, positions=False, chars=False, keeporiginal=False, removestops=True, start_pos=0, start_char=0, mode='', **kwargs): t = Token(positions, chars, removestops=removestops, mode=mode, **kwargs) seglist = jieba.cut(value, cut_all=True) for w in seglist: t.original = t.text = w t.boost = 1.0 if positions: t.pos = start_pos + value.find(w) if chars: t.startchar = start_char + value.find(w) t.endchar = start_char + value.find(w) + len(w) yield t def ChineseAnalyzer(): return ChineseTokenizer()
生成索引
python manage.py rebuild_index
搜索栏实现搜索
<form method='get' action="/search/" target="_blank"> <input type="text" name="q"> <input type="submit" value="查询"> </form>
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