Julien Cigar <jci...@ulb.ac.be> wrote:
> > Hi Mike, > > Sorry to bother you once with this, but I've re-read all the docs on > the relationships and I want to be sure that I've understand correctly. > > Imagine I have the following "link" table in SQL: > https://gist.github.com/silenius/77d406f8e0c0e26eb38f with the following > mappers: https://gist.github.com/silenius/18190ef4912667e49b1a > > So basically you have Accounts, Pools, Roles and a link table > AccountRole > > What I would like is to have on the Pool object the list of Account > who have a Role 'facilitator' for a certain Pool. > > The result is at line 18-26 of the paste > (https://gist.github.com/silenius/18190ef4912667e49b1a#file-gistfile1-py-L18-L26), > I wondered if it was okay because I sometimes mix the primaryjoin and > secondaryjoin clauses... If I understand well I don't need a primaryjoin > clause > in this case ..? I don’t know offhand, if you turn on INFO logging for the “sqlalchemy.orm” logger you’ll see every decision SQLAlchemy is making: from sqlalchemy import * from sqlalchemy.orm import * from sqlalchemy.ext.declarative import declarative_base Base = declarative_base() class A(Base): __tablename__ = 'a' id = Column(Integer, primary_key=True) bs = relationship("B") class B(Base): __tablename__ = 'b' id = Column(Integer, primary_key=True) a_id = Column(ForeignKey('a.id')) import logging logging.basicConfig() logging.getLogger("sqlalchemy.orm").setLevel(logging.INFO) configure_mappers() output: INFO:sqlalchemy.orm.mapper.Mapper:(B|b) _post_configure_properties() started INFO:sqlalchemy.orm.mapper.Mapper:(B|b) initialize prop id INFO:sqlalchemy.orm.mapper.Mapper:(B|b) initialize prop a_id INFO:sqlalchemy.orm.mapper.Mapper:(B|b) _post_configure_properties() complete INFO:sqlalchemy.orm.mapper.Mapper:(A|a) _post_configure_properties() started INFO:sqlalchemy.orm.mapper.Mapper:(A|a) initialize prop bs INFO:sqlalchemy.orm.relationships.RelationshipProperty:A.bs setup primary join a.id = b.a_id INFO:sqlalchemy.orm.relationships.RelationshipProperty:A.bs setup secondary join None INFO:sqlalchemy.orm.relationships.RelationshipProperty:A.bs synchronize pairs [(a.id => b.a_id)] INFO:sqlalchemy.orm.relationships.RelationshipProperty:A.bs secondary synchronize pairs [] INFO:sqlalchemy.orm.relationships.RelationshipProperty:A.bs local/remote pairs [(a.id / b.a_id)] INFO:sqlalchemy.orm.relationships.RelationshipProperty:A.bs remote columns [b.a_id] INFO:sqlalchemy.orm.relationships.RelationshipProperty:A.bs local columns [a.id] INFO:sqlalchemy.orm.relationships.RelationshipProperty:A.bs relationship direction symbol('ONETOMANY') INFO:sqlalchemy.orm.strategies.LazyLoader:A.bs lazy loading clause :param_1 = b.a_id INFO:sqlalchemy.orm.mapper.Mapper:(A|a) initialize prop id INFO:sqlalchemy.orm.mapper.Mapper:(A|a) _post_configure_properties() complete > > Thanks, > Julien > >>>>>> I'm using PostgreSQL, and I checked that all constraints are properly >>>>>> created on server-side but I haven't checked with sqllite:// >>>>>> >>>>>>>> Thanks, >>>>>>>> Julien >>>>>>>> >>>>>>>> >>>>>>>>>>> -- >>>>>>>>>>> Julien Cigar >>>>>>>>>>> Belgian Biodiversity Platform (http://www.biodiversity.be) >>>>>>>>>>> PGP fingerprint: EEF9 F697 4B68 D275 7B11 6A25 B2BB 3710 A204 23C0 >>>>>>>>>>> No trees were killed in the creation of this message. >>>>>>>>>>> However, many electrons were terribly inconvenienced. >>>>>>>>>>> >>>>>>>>>>> -- >>>>>>>>>>> You received this message because you are subscribed to the Google >>>>>>>>>>> Groups "sqlalchemy" group. >>>>>>>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>>>>>>> send an email to sqlalchemy+unsubscr...@googlegroups.com. >>>>>>>>>>> To post to this group, send email to sqlalchemy@googlegroups.com. >>>>>>>>>>> Visit this group at http://groups.google.com/group/sqlalchemy. >>>>>>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> -- >>>>>>>>>> Julien Cigar >>>>>>>>>> Belgian Biodiversity Platform (http://www.biodiversity.be) >>>>>>>>>> PGP fingerprint: EEF9 F697 4B68 D275 7B11 6A25 B2BB 3710 A204 23C0 >>>>>>>>>> No trees were killed in the creation of this message. >>>>>>>>>> However, many electrons were terribly inconvenienced. >>>>>>>>>> >>>>>>>>>> -- >>>>>>>>>> You received this message because you are subscribed to the Google >>>>>>>>>> Groups "sqlalchemy" group. >>>>>>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>>>>>> send an email to sqlalchemy+unsubscr...@googlegroups.com. >>>>>>>>>> To post to this group, send email to sqlalchemy@googlegroups.com. >>>>>>>>>> Visit this group at http://groups.google.com/group/sqlalchemy. >>>>>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>>>> >>>>>>>>> -- >>>>>>>>> You received this message because you are subscribed to the Google 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post to this group, send email to sqlalchemy@googlegroups.com. >>>>>>>> Visit this group at http://groups.google.com/group/sqlalchemy. >>>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>> >>>>>>> -- >>>>>>> You received this message because you are subscribed to the Google >>>>>>> Groups "sqlalchemy" group. >>>>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>>>> an email to sqlalchemy+unsubscr...@googlegroups.com. >>>>>>> To post to this group, send email to sqlalchemy@googlegroups.com. >>>>>>> Visit this group at http://groups.google.com/group/sqlalchemy. >>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>> >>>>>> -- >>>>>> Julien Cigar >>>>>> Belgian Biodiversity Platform (http://www.biodiversity.be) >>>>>> PGP fingerprint: EEF9 F697 4B68 D275 7B11 6A25 B2BB 3710 A204 23C0 >>>>>> No trees were killed in the creation of this message. >>>>>> However, many electrons were terribly inconvenienced. >>>>>> >>>>>> -- >>>>>> You received this message because you are subscribed to the Google >>>>>> Groups "sqlalchemy" group. >>>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>>> an email to sqlalchemy+unsubscr...@googlegroups.com. >>>>>> To post to this group, send email to sqlalchemy@googlegroups.com. >>>>>> Visit this group at http://groups.google.com/group/sqlalchemy. >>>>>> For more options, visit https://groups.google.com/d/optout. >>>>> >>>>> -- >>>>> You received this message because you are subscribed to the Google Groups >>>>> "sqlalchemy" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send an >>>>> email to sqlalchemy+unsubscr...@googlegroups.com. >>>>> To post to this group, send email to sqlalchemy@googlegroups.com. >>>>> Visit this group at http://groups.google.com/group/sqlalchemy. >>>>> For more options, visit https://groups.google.com/d/optout. >>>> >>>> -- >>>> Julien Cigar >>>> Belgian Biodiversity Platform (http://www.biodiversity.be) >>>> PGP fingerprint: EEF9 F697 4B68 D275 7B11 6A25 B2BB 3710 A204 23C0 >>>> No trees were killed in the creation of this message. >>>> However, many electrons were terribly inconvenienced. >>>> >>>> -- >>>> You received this message because you are subscribed to the Google Groups >>>> "sqlalchemy" group. >>>> To unsubscribe from this group and stop receiving emails from it, send an >>>> email to sqlalchemy+unsubscr...@googlegroups.com. >>>> To post to this group, send email to sqlalchemy@googlegroups.com. >>>> Visit this group at http://groups.google.com/group/sqlalchemy. >>>> For more options, visit https://groups.google.com/d/optout. >>> >>> >>> >>> -- >>> Julien Cigar >>> Belgian Biodiversity Platform (http://www.biodiversity.be) >>> PGP fingerprint: EEF9 F697 4B68 D275 7B11 6A25 B2BB 3710 A204 23C0 >>> No trees were killed in the creation of this message. >>> However, many electrons were terribly inconvenienced. >>> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> "sqlalchemy" group. >>> To unsubscribe from this group and stop receiving emails from it, send an >>> email to sqlalchemy+unsubscr...@googlegroups.com. >>> To post to this group, send email to sqlalchemy@googlegroups.com. >>> Visit this group at http://groups.google.com/group/sqlalchemy. >>> For more options, visit https://groups.google.com/d/optout. >> >> -- >> You received this message because you are subscribed to the Google Groups >> "sqlalchemy" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to sqlalchemy+unsubscr...@googlegroups.com. >> To post to this group, send email to sqlalchemy@googlegroups.com. >> Visit this group at http://groups.google.com/group/sqlalchemy. >> For more options, visit https://groups.google.com/d/optout. > > -- > Julien Cigar > Belgian Biodiversity Platform (http://www.biodiversity.be) > PGP fingerprint: EEF9 F697 4B68 D275 7B11 6A25 B2BB 3710 A204 23C0 > No trees were killed in the creation of this message. > However, many electrons were terribly inconvenienced. > > -- > You received this message because you are subscribed to the Google Groups > "sqlalchemy" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sqlalchemy+unsubscr...@googlegroups.com. > To post to this group, send email to sqlalchemy@googlegroups.com. > Visit this group at http://groups.google.com/group/sqlalchemy. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. 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