使用 whoosh_search 和分页时出现 sqlalchemy 错误

Question

I am trying to paginate a text search result using sqlalchemy (I use flask-sqlalchemy) and whoosh. My simplified models.py looks like this

class User(db.Model):
    __searchable__ = ['username']

    id = db.Column(db.Integer, primary_key=True)
    username = db.Column(db.String(64), index=True, unique=True)

    def __repr__(self):
        return '<User %r>' % (self.username)

whooshalchemy.whoosh_index(app, User)

So I simply want to search my database for usernames. I thought I can do that with

search_result = models.User.query.whoosh_search(search_txt, MAX_SEARCH_RESULTS).paginate(1, MEMBERS_PER_PAGE, False)

where search_txt is my search text. This works if the result of the search is only one user. But if it is more than one user I get the following error

AttributeError: 'result' object has no attribute 'id'

I just started with sqlalchemy so it is probably some very simple mistake on my side? thanks for your help carl

edit: Ok figured out that the problem is connected to the variable MEMBERS_PER_PAGE. if MEMBERS_PER_PAGE is equal the number of search results, I get an error. Otherwise it works fine...

Answer 1

This seems to be a bug in Flask-WhooshAlchemy. There is a open pull request fixing the problem on the github page of Flask-WhooshAlchemy. I ended up using Flask-WhooshAlchemy-Redux , as suggested in the discussion on the pull request, and that fixed the pagination problem for me.