Hello,
I'm a little lost for selecting items from a many-to-many relationship.
I was able to find items from a one-to-many relation where I could find
"sites" from one "client":
OR = [model.Site.c[col].like(pattern) for col in model.Site.c.keys() if
not (model.Site.c[col].primary_key or model.Site.c[col].foreign_key)]
c.site_list = model.Site.select(and_(
model.Site.c.id_client==c.client.id,
or_(*OR),
)
)
This works just fine.
Now I have "clients" and "attachments" with a many-to-many relation.
attachment_mapper = assign_mapper(ctx, Attachment, attachment_table,
properties={
'file':deferred(attachment_table.c.file),
'clients':relation(Client, backref=backref("attachments",
order_by=attachment_table.c.name), secondary=attachments_has_clients,
cascade="save-update"),
},
)
And I'd like to find all "attachments" from one client. But as there's a
weak (secondary) table in between, I can no longer have something like:
model.Attachment.id_client==c.client.id
How can I achieve this ?
ps: I'm using assign_mapper.
Regards,
--
Alexandre CONRAD
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