我有一个sqlalchemy模型，我正在搜索flask-whooshalchemy。我希望在搜索字段中包含方法的输出，但无法弄清楚它是如何完成的，或者它是否可能。烧瓶 - whooshalchemy文件有点限制。
我正在尝试这样的事情：
class Trade(db.Model):
__searchable__ = [
'species', 'nature', 'ability', 'move1', 'move2', 'move3', 'move4', 'ivSpread']
id = db.Column(db.Integer, primary_key=True)
user_id = db.Column(db.Integer, db.ForeignKey('user.id'))
dex_no = db.Column(db.Integer)
species = db.Column(db.String(30))
male = db.Column(db.Boolean)
female = db.Column(db.Boolean)
nature = db.Column(db.String(30))
ability = db.Column(db.String(30))
iv_hp = db.Column(db.Integer)
iv_atk = db.Column(db.Integer)
iv_def = db.Column(db.Integer)
iv_spa = db.Column(db.Integer)
iv_spd = db.Column(db.Integer)
iv_spe = db.Column(db.Integer)
move1 = db.Column(db.String(30))
move2 = db.Column(db.String(30))
move3 = db.Column(db.String(30))
move4 = db.Column(db.String(30))
def ivSpread(self):
ivs = [
self.iv_hp,
self.iv_atk,
self.iv_def,
self.iv_spa,
self.iv_spd,
self.iv_spe
]
return "/".join(ivs)
def __repr__(self):
return '<Post %r: %r>' % (self.owner.nickname, self.species)
如果我能提供更多信息，请与我们联系。关于使用备用模块的建议也很好，我相信可能会有更强大的东西，而不是烧瓶 - whooshalchemy。毕竟，它在两年内还没有被推到。
e：使用上面的原样和下面Mark Hildreth提供的@property建议，我得到以下追溯。
whoosh.fields.UnknownFieldError
UnknownFieldError: No field named 'ivSpread' in <Schema: ['ability', 'gender', 'id', 'move1', 'move2', 'move3', 'move4', 'nature', 'species']>
Traceback (most recent call last):
File "c:\Python27\lib\site-packages\flask\app.py", line 1701, in __call__
return self.wsgi_app(environ, start_response)
File "c:\Python27\lib\site-packages\flask\app.py", line 1689, in wsgi_app
response = self.make_response(self.handle_exception(e))
File "c:\Python27\lib\site-packages\flask\app.py", line 1687, in wsgi_app
response = self.full_dispatch_request()
File "c:\Python27\lib\site-packages\flask\app.py", line 1360, in full_dispatch_request
rv = self.handle_user_exception(e)
File "c:\Python27\lib\site-packages\flask\app.py", line 1358, in full_dispatch_request
rv = self.dispatch_request()
File "c:\Python27\lib\site-packages\flask\app.py", line 1344, in dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)
File "c:\Users\Shane\Documents\Coding\python\flask\trade_lister\app\views.py", line 172, in new_trade
db.session.commit()
File "c:\Python27\lib\site-packages\sqlalchemy\orm\scoping.py", line 114, in do
return getattr(self.registry(), name)(*args, **kwargs)
File "c:\Python27\lib\site-packages\sqlalchemy\orm\session.py", line 703, in commit
self.transaction.commit()
File "c:\Python27\lib\site-packages\sqlalchemy\orm\session.py", line 367, in commit
self.session.dispatch.after_commit(self.session)
File "c:\Python27\lib\site-packages\sqlalchemy\event.py", line 319, in __call__
fn(*args, **kw)
File "c:\Python27\lib\site-packages\flask_sqlalchemy\__init__.py", line 170, in session_signal_after_commit
models_committed.send(session.app, changes=d.values())
File "c:\Python27\lib\site-packages\blinker\base.py", line 267, in send
for receiver in self.receivers_for(sender)]
File "c:\Python27\lib\site-packages\flask_whooshalchemy.py", line 256, in _after_flush
writer.update_document(**attrs)
File "c:\Python27\lib\site-packages\whoosh\writing.py", line 477, in update_document
self.add_document(**fields)
File "c:\Python27\lib\site-packages\whoosh\writing.py", line 730, in add_document
self._check_fields(schema, fieldnames)
File "c:\Python27\lib\site-packages\whoosh\writing.py", line 718, in _check_fields
% (name, schema))
UnknownFieldError: No field named 'ivSpread' in <Schema: ['ability', 'gender', 'id', 'move1', 'move2', 'move3', 'move4', 'nature', 'species']>
答案 0 :(得分：1)
我不太了解Woosh或Flask-Wooshalchemy，所以这可能是错的，但我想你可能能够做这样的事情......
class Trade(db.Model):
#...
@property
def ivSpread(self):
#...
这使用property使方法调用看起来像一个属性，所以不要...... 贸易（...） print t.ivSpread（）
......你会做......
t = Trade(...)
print t.ivSpread
这是必要的，因为Flask-WooshAlchemy似乎假设可搜索的项目是一个属性，此时它只是在不调用它的情况下拉动方法。
如果你需要让ivSpread保留一个方法，你可以使用包装器：
class Trade(db.Model):
#...
def ivSpread(self):
#...
@property
def ivSpreadProp(self):
return self.ivSpread()
然后你需要ivSpreadProp搜索ivSpread rthan。
修改
看起来你正在尝试做的事情目前无法实现。见here：
searchable = set(model.__searchable__)
for field in model.__table__.columns:
if field.primary_key:
schema[field.name] = whoosh.fields.ID(stored=True, unique=True)
primary = field.name
if field.name in searchable and isinstance(field.type,
(sqlalchemy.types.Text, sqlalchemy.types.String,
sqlalchemy.types.Unicode)):
schema[field.name] = whoosh.fields.TEXT(
analyzer=StemmingAnalyzer())
Flask-WhooshAlchemy假定__searchable__属性中的项目将是您的模型使用SQLAlchemy定义的列。 Flask-WhooshAlchemy需要让你干净利落地实现你的目标。