[Zope3-Users] Fwd: Search multiple fields with TextIndex
Massimiliano della Rovere
massimiliano.dellarovere at gmail.com
Fri Feb 20 03:09:44 EST 2009
I originally sent this message by mistake only to Chiristian who
replied to my previous one.
I send a copy to the mailing list in case it may be useful for someone else too.
---------- Forwarded message ----------
From: Massimiliano della Rovere <massimiliano.dellarovere at gmail.com>
Date: Mon, Feb 16, 2009 at 17:23
Subject: Re: [Zope3-Users] Search multiple fields with TextIndex
To: Christian Lück <christian.lueck at ruhr-uni-bochum.de>
Probably because I am a zope newbie, I have some problems in
understanding how queries are managed.
I am reading von Weithershausen book, and I notice that the
SearchPage.__call__ method takes the query parameter. How does zope
know that the query (I guess it is request.query or
request.form.query; I wish zope had an interactive debugger with
inspector) paramter fromthe search viewlet must be passed to the
__call__method?
parameter name matching?
I have the usual interface with the autohor, subject and location
fields (the real class has over 30 fields).
I created a search page with a form containing a field for each
attribute, implemented a class derived from FormBase and action
attribut of the form tag pointing to the view that should perform the
search.
I am thinking how the request to the catalogo.searchResults should
receive the parameter ttyped by the user (there could be less
parameter than the search fields).
I implemented a few bits to try to realize what I wrote.
We have the class preparing the catalog and indices when a site
istance is created:
@adapter(IEventoNuovoSitoMabon)
def catalogo_e_indice( evento ):
gs = evento.object.getSiteManager()
intids = IntIds()
gs['intids'] = intids
gs.registerUtility( intids, IIntIds )
catalogo = Catalog()
gs['catalogo'] = catalogo
gs.registerUtility( catalogo, ICatalog )
campi = [ i.__name__ for i in Fields(IScheda) ] #.omit('__name__',
'__parent__', 'titolo') ]
for i in campi:
testuale = TextIndex(
interface = ISearchableText,
field_name = i,
field_callable = False
)
catalogo[i] = testuale
semplice = TextIndex(
interface = ISearchableText,
field_name = 'getSearchableText',
field_callable = True
)
catalogo[u'semplice'] = semplice
and the data extractor:
class TestoSchedaPerRicerca(object):
"""Estrattore del testo per le ricerche"""
implements(ISearchableText)
adapts(IScheda)
def __init__( self, context ):
self.context = context
def __getattr__( self, attr ):
try:
return self.context.__dict__[attr]
except KeyError:
raise AttributeError( attr )
def getSearchableText( self ):
return self.context.autore + u' : ' + self.context.soggetto
But now when I add a Scheda object I get the following error:
2009-02-16T17:17:33 ERROR SiteError
http://localhost:9673/mabon/schede/+/mabon.Scheda%3D
Traceback (most recent call last):
File "/usr/lib/python2.4/site-packages/zope/publisher/publish.py",
line 133, in publish
result = publication.callObject(request, obj)
File "/usr/lib/python2.4/site-packages/zope/app/publication/zopepublication.py",
line 161, in callObject
return mapply(ob, request.getPositionalArguments(), request)
File "/usr/lib/python2.4/site-packages/zope/publisher/publish.py",
line 108, in mapply
return debug_call(obj, args)
- __traceback_info__: <security proxied
zope.app.publisher.browser.viewmeta.ModuloAggiungiScheda instance at
0xa87036c>
File "/usr/lib/python2.4/site-packages/zope/publisher/publish.py",
line 114, in debug_call
return obj(*args)
File "/usr/lib/python2.4/site-packages/zope/formlib/form.py", line
769, in __call__
self.update()
File "/usr/lib/python2.4/site-packages/zope/formlib/form.py", line
750, in update
result = action.success(data)
File "/usr/lib/python2.4/site-packages/zope/formlib/form.py", line
594, in success
return self.success_handler(self.form, self, data)
File "/usr/lib/python2.4/site-packages/zope/formlib/form.py", line
861, in handle_add
self.createAndAdd(data)
File "/usr/lib/python2.4/site-packages/zope/formlib/form.py", line
868, in createAndAdd
return self.add(ob)
File "/usr/lib/python2.4/site-packages/zope/formlib/form.py", line
877, in add
ob = self.context.add(object)
File "/usr/lib/python2.4/site-packages/zope/app/container/browser/adding.py",
line 72, in add
container[name] = content
File "/usr/lib/python2.4/site-packages/zope/app/container/sample.py",
line 86, in __setitem__
setitem(self, self.__data.__setitem__, key, object)
File "/usr/lib/python2.4/site-packages/zope/app/container/contained.py",
line 593, in setitem
notify(event)
File "/usr/lib/python2.4/site-packages/zope/event/__init__.py", line
23, in notify
subscriber(event)
File "/usr/lib/python2.4/site-packages/zope/component/event.py", line
26, in dispatch
for ignored in zope.component.subscribers(event, None):
File "/usr/lib/python2.4/site-packages/zope/component/_api.py", line
130, in subscribers
return sitemanager.subscribers(objects, interface)
File "/usr/lib/python2.4/site-packages/zope/component/registry.py",
line 290, in subscribers
return self.adapters.subscribers(objects, provided)
File "/usr/lib/python2.4/site-packages/zope/interface/adapter.py",
line 535, in subscribers
subscription(*objects)
File "/usr/lib/python2.4/site-packages/zope/component/event.py", line
33, in objectEventNotify
adapters = zope.component.subscribers((event.object, event), None)
File "/usr/lib/python2.4/site-packages/zope/component/_api.py", line
130, in subscribers
return sitemanager.subscribers(objects, interface)
File "/usr/lib/python2.4/site-packages/zope/component/registry.py",
line 290, in subscribers
return self.adapters.subscribers(objects, provided)
File "/usr/lib/python2.4/site-packages/zope/interface/adapter.py",
line 535, in subscribers
subscription(*objects)
File "/usr/lib/python2.4/site-packages/zope/app/intid/__init__.py",
line 169, in addIntIdSubscriber
notify(IntIdAddedEvent(ob, event))
File "/usr/lib/python2.4/site-packages/zope/event/__init__.py", line
23, in notify
subscriber(event)
File "/usr/lib/python2.4/site-packages/zope/component/event.py", line
26, in dispatch
for ignored in zope.component.subscribers(event, None):
File "/usr/lib/python2.4/site-packages/zope/component/_api.py", line
130, in subscribers
return sitemanager.subscribers(objects, interface)
File "/usr/lib/python2.4/site-packages/zope/component/registry.py",
line 290, in subscribers
return self.adapters.subscribers(objects, provided)
File "/usr/lib/python2.4/site-packages/zope/interface/adapter.py",
line 535, in subscribers
subscription(*objects)
File "/usr/lib/python2.4/site-packages/zope/app/catalog/catalog.py",
line 153, in indexDocSubscriber
cat.index_doc(id, ob)
File "/usr/lib/python2.4/site-packages/zope/app/catalog/catalog.py",
line 62, in index_doc
index.index_doc(docid, texts)
File "/usr/lib/python2.4/site-packages/zope/app/catalog/attribute.py",
line 144, in index_doc
return super(AttributeIndex, self).index_doc(docid, value)
File "/usr/lib/python2.4/site-packages/zope/index/text/textindex.py",
line 45, in index_doc
self.index.index_doc(docid, text)
File "/usr/lib/python2.4/site-packages/zope/index/text/okapiindex.py",
line 225, in index_doc
count = BaseIndex.index_doc(self, docid, text)
File "/usr/lib/python2.4/site-packages/zope/index/text/baseindex.py",
line 95, in index_doc
wids = self._lexicon.sourceToWordIds(text)
File "/usr/lib/python2.4/site-packages/zope/index/text/lexicon.py",
line 66, in sourceToWordIds
for t in last:
TypeError: iteration over non-sequence
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