Skip to main content

Whoosh extension to SQLAlchemy

Project description

Supports the easy text-indexing of SQLAlchemy model fields.

BSD license.

Written by Stefane Fermigier (http://www.fermigier.com/) based on Flask-WhooshAlchemy written by Karl Gyllstromk.

Quick-start example

Import this library:

>>> from whooshalchemy import IndexService

Standard SQLAlchemy imports:

>>> from sqlalchemy.ext.declarative import declarative_base
>>> from sqlalchemy.schema import Column
>>> from sqlalchemy.types import Integer, Text, DateTime
>>> from sqlalchemy.engine import create_engine
>>> from sqlalchemy.orm.session import sessionmaker

Setup SQLAlchemy:

>>> engine = create_engine('sqlite:///:memory:')
>>> Session = sessionmaker(bind=engine)
>>> session = Session()
>>> Base = declarative_base()

Our model:

>>> class BlogPost(Base):
...   __tablename__ = 'blogpost'
...   __searchable__ = ['title', 'content']  # these fields will be indexed by whoosh
...
...   id = Column(Integer, primary_key=True)
...   title = Column(Text)
...   content = Column(Text)
...
...   def __repr__(self):
...       return '{0}(title={1})'.format(self.__class__.__name__, self.title)
...
>>> Base.metadata.create_all(engine)

Create and init indexing service:

>>> config = {"WHOOSH_BASE": "/tmp/whoosh"}
>>> index_service = IndexService(config=config, session=session)
>>> index_service.register_class(BlogPost)
FileIndex(FileStorage('/tmp/whoosh/BlogPost'), 'MAIN')

Create a blog post:

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

Perform a few searches:

>>> list(BlogPost.search_query(u'cool'))
[BlogPost(title=My cool title)]
>>> list(BlogPost.search_query(u'first'))
[BlogPost(title=My cool title)]

Note: the response is a BaseQuery object, so you can append other SQL operations:

>>> list(BlogPost.search_query(u'first').filter(BlogPost.id >= 0))
[BlogPost(title=My cool title)]

Using with Flask

Setup you Flask app, create the db object (db = SQLAlchemy(app)), import your models.

Set WHOOSH_BASE to your Whoosh index directory in your Flask , then create the index service and register your models:

>>> index_service = IndexService(config=app.config)
>>> index_service.register_class(MyFirstModel)
>>> index_service.register_class(MySecondModel)

Etc.

CHANGES

Version 0.3.0 (2017/01/09)

  • Python 3 compatibility.
  • Use pytest instead of nose for tests

Project details


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Files for WhooshAlchemy, version 0.3.1
Filename, size File type Python version Upload date Hashes
Filename, size WhooshAlchemy-0.3.1.tar.gz (5.5 kB) File type Source Python version None Upload date Hashes View

Supported by

Pingdom Pingdom Monitoring Google Google Object Storage and Download Analytics Sentry Sentry Error logging AWS AWS Cloud computing DataDog DataDog Monitoring Fastly Fastly CDN DigiCert DigiCert EV certificate StatusPage StatusPage Status page