“查询在Flask + Whoosh + SQLAlchemy中没有属性'whoosh_search”AttributeError

时间:2014-07-03 11:24:05

标签: python flask flask-sqlalchemy whoosh flask-whooshee

我对Flask-WhooshAlchemy以及类似这些问题的Flask-Whooshee有一个奇怪的问题:

我从Flask-WhooshAlchemy开始。我知道Whoosh只适用于新索引的项目,而不适用于预先存在的项目,因此我将所有内容重新导入到我的数据库中。这没有用,所以我从Stackoverflow问题中运行了gist代码:How flask-whooshalchemy index data imported manually?

我对他的代码做了一点改动。由于model.query对我不起作用(我假设不推荐使用查询的方式,但这只是猜测),我连接引擎并以这种方式调用它。在任何一种情况下,它似乎都有效,我生成了一个健康大小的飞快指数。

我已经完成了将其放在schema.py文件底部的步骤(有些人称之为models.py):

whooshalchemy.whoosh_index(app, Restaurant)

我输入了在类定义中可搜索的项目列表。我还发现这个链接描述了有关重载"查询"的一些缺点。开发人员的方式:http://blog.miguelgrinberg.com/post/the-flask-mega-tutorial-part-xvi-debugging-testing-and-profiling/page/3。他编写了一些代码修补了这个错误 - https://raw.githubusercontent.com/miguelgrinberg/Flask-WhooshAlchemy/1e17350ea600e247c0094cfa4ae7145f08f4c4a3/flask_whooshalchemy.py - 我也尝试安装它,但是当它没有帮助时还原它。

这是追溯:

Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1836, in __call__
    return self.wsgi_app(environ, start_response)
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1820, in wsgi_app
    response = self.make_response(self.handle_exception(e))
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1403, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1817, in wsgi_app
    response = self.full_dispatch_request()
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1477, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1381, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1475, in full_dispatch_request
    rv = self.dispatch_request()
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1461, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/home/<omitted>/App/api/app/views.py", line 96, in instant
    result = q.whoosh_search(query).all()
AttributeError: 'Query' object has no attribute 'whoosh_search'

我尝试使用Flask-Whooshee,看起来非常非常相似,我也遇到了同样的错误。

以下是有问题的代码(切换到Flask-Whooshee之后,但我已经将Flask-WhooshAlchemy代码注释掉了):

views.py:

@app.route('/search')
def search():

    query = request.args.get('query', '', type=str)
    q = session.query()
    result = q.whooshee_search(query).all()
    #result = q.whoosh_search(query).all()

    return Response(json.dumps(result), mimetype='text/json')

schema.py:

from app import app
from flask.ext.whooshee import Whooshee
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy import Column, Integer, Float, String, Date
# import flask.ext.whooshalchemy as whooshalchemy

from settings import WHOOSH_BASE

Base = declarative_base()
whooshee = Whooshee(app)
@whooshee.register_model('db_name', 'db_addr', 'google_name', 'yelp_name',
        'yelp_address')
class Restaurant(Base):
    __tablename__ = 'restaurant_indexed'
    #__searchable__ = ['db_name', 'db_addr', 
    #        'google_name', 'yelp_name', 'yelp_address']
    restaurant_id = Column(Integer, primary_key=True)
    google_id = Column(String)
    db_name = Column(String)
    db_addr = Column(String)

# whooshalchemy.whoosh_index(app, Restaurant)

我注释了以前在Flask-WhooshAlchemy版本代码中使用的行。

我的 init .py看起来像这样:

from flask import Flask
app = Flask(__name__)
app.config['WHOOSH_BASE'] = '/home/me/path/to/whoosh/dir'
from app import views

2 个答案:

答案 0 :(得分:1)

我遇到了同样的错误,然后当我重新阅读文档时,我注意到创建帖子是能够进行whoosh_search的步骤之一:

例如,表格需要先由whoosh(docs)索引:

Let’s create a post:

db.session.add(
    BlogPost(title='My cool title', content='This is the first post.')
); db.session.commit()

会话提交后,我们的新BlogPost会被编入索引。同样,如果删除帖子,它将从Whoosh索引中删除。

有没有办法将现有的db.table添加到嗖嗖索引?一种解决方案是重新插入所有行;这post似乎给出了指示,但也声称没有维持whooshalchemy。

答案 1 :(得分:0)

我一直只使用Flask-SQLAlchemy,但不是直接使用SQLAlchemy。

使用Flask-SQLAlchemy,我会像这样查询Restaurant表:

  Restaurant.query.whoosh_search('foo')

SQLAlchemy docs开始,您需要执行以下操作:

  q = session.query(Restaurant)
  result = q.whooshee_search(query).all()