thanks again Mike! almost there. the problem now are inherited tables ...
taken from my example code, let's say I have a table that inherits SomeOtherClass; then, the error is something like:
sqlalchemy.exc.ArgumentError: Index 'ix_adapter_created_on' is against table 'adapter', and cannot be associated with table 'http_adapter'.
in the example above, http_error inherits from adapter. best regards, richard. On 06/02/2015 01:45 PM, Mike Bayer wrote:
On 6/2/15 12:05 PM, Richard Gerd Kuesters wrote:oh, sorry Mike, I forgot to mention that I use TimestampMixin in other classes aswell, so I got an "existent index error" (something like that). Is there a way I don't need to declare the index name? (IMHO this appears to be the problem).indexes have to be named something so you'd have to figure out a naming convention based on tables/column names. There should be an existing convention for indexes so if you set "None" as the name it should make one up for you like "ix_tablename_columnname"thanks a lot! richard. On 06/02/2015 12:28 PM, Mike Bayer wrote:On 6/2/15 10:16 AM, Richard Gerd Kuesters wrote:hi all, again :) how can I create an index in fields inherited by other classes? example: class TimestampMixin(object):updated_on = Column(DateTime) # i wanted to create three indexes in this field, "updated_on", "updated_on.asc()" and "updated_on.desc()"class SomeOtherClass(Base, TimestampMixin): __tablename__ = 'some_table' id = Column(Integer) .... Index('ix_some_other_class_01', SomeOtherClass.updated_on) Index('ix_some_other_class_02', SomeOtherClass.updated_on.asc()) Index('ix_some_other_class_03', SomeOtherClass.updated_on.desc()) I just want to avoid repetition, if possible :)you could use a __table_args__() callable with @declared_attr. Or use a mapping event like __declare_first__() or __declare_last__() (these are hooked into the before_configured / after_configured events which you could also use directly, e.g. http://docs.sqlalchemy.org/en/rel_1_0/orm/events.html?highlight=before_configure#sqlalchemy.orm.events.MapperEvents.before_configured)best regards, richard. --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 <mailto: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 <mailto:sqlalchemy+unsubscr...@googlegroups.com>. To post to this group, send email to sqlalchemy@googlegroups.com <mailto: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 <mailto:sqlalchemy+unsubscr...@googlegroups.com>. To post to this group, send email to sqlalchemy@googlegroups.com <mailto: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 <mailto:sqlalchemy+unsubscr...@googlegroups.com>. To post to this group, send email to sqlalchemy@googlegroups.com <mailto:sqlalchemy@googlegroups.com>.Visit this group at http://groups.google.com/group/sqlalchemy. For more options, visit https://groups.google.com/d/optout.
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