dum question, i just noticed any() in the docs , sorry
On 3 Paź, 23:08, g00fy <[EMAIL PROTECTED]> wrote:
> i have a problem with filtering by related problem - i want to find
> estates that translated title is "warehouse"
> here are the models:
>
> from estate.model import meta
> from sqlalchemy import Table, Column, Integer, String, ForeignKey,
> Unicode
> from sqlalchemy.orm import mapper, relation, backref
> construction_table = Table('w_construction', meta.metadata,
> Column('id', Integer, primary_key=True),
> )
>
> warehouse_table = Table('w_warehouse', meta.metadata,
> Column('id', Integer, primary_key=True),
> Column('construction_id', Integer,
> ForeignKey(construction_table.c.id)),
> )
>
> language_table = Table('language', meta.metadata,
> Column('code', String(5), primary_key=True),
> Column('name', Unicode(20)),
> )
>
> currency_table = Table('currency', meta.metadata,
> Column('code', String(5), primary_key=True),
> Column('name', Unicode(20)),
> )
>
> constuction_translation_table = Table('w_construction_translation',
> meta.metadata,
> Column('id', Integer, primary_key=True),
> Column('construction_id', Integer,
> ForeignKey(construction_table.c.id)),
> Column('language_id',
> String(5),ForeignKey(language_table.c.code)),
> Column('title', Unicode(512)),
> )
>
> translation_table = Table('w_translation', meta.metadata,
> Column('id', Integer, primary_key=True),
> Column('warehouse_id', Integer,
> ForeignKey(warehouse_table.c.id)),
> Column('language_id',
> String(5),ForeignKey(language_table.c.code)),
> Column('title', Unicode(512)),
> )
>
> price_table = Table('w_price', meta.metadata,
> Column('id', Integer, primary_key=True),
> Column('currency_id',
> String(5),ForeignKey(currency_table.c.code)),
> Column('warehouse_id', Integer,
> ForeignKey(warehouse_table.c.id)),
> Column('total', Integer),
> )
>
> class Warehouse(object):
> def __init__(self,id,construction_id):
> self.id = id
> self.construction_id = construction_id
>
> def __repr__(self):
> return "%s" % self.id
>
> class WarehouseTranslation(object):
> def __init__(self,id,warehouse_id,language_id,title):
> self.id = id
> self.warehouse_id = warehouse_id
> self.language_id = language_id
> self.title = title
>
> class Language(object):
> def __init__(self,code,name):
> self.code = code
> self.name = name
>
> mapper(Warehouse, warehouse_table)
> mapper(Language,language_table)
> mapper(WarehouseTranslation,translation_table,properties = {
> 'warehouse': relation(Warehouse,
> lazy = False, #1 note lazy here, it means that we
> # will use lazy loading (more
> details in the docs
> backref = backref('translations',lazy = False)),
> 'language': relation(Language,
> uselist = False,#2 note uselist, it means
> #we use one-to-one instead of
> one-to-many
> lazy = False),},
>
> primary_key = [translation_table.c.warehouse_id,
> translation_table.c.language_id]
> #explicit primary key is needed when SQLA can not assemble the one
> foryou automatically
> );
>
> here is the code i'm trying to do:
>
> list = meta.Session.query(model.Warehouse)\
> .filter( model.Warehouse.translations.title.like(u'magazyn
> %')).all()
>
> (there is an error : AttributeError: 'InstrumentedAttribute' object
> has no attribute 'title')
>
> any tips?
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