Following up
on
https://groups.google.com/forum/#!searchin/sqlalchemy/join_depth%7Csort:date/sqlalchemy/WstKKbEFaRo/hL910npaBQAJ
and
https://stackoverflow.com/questions/4381712/how-do-you-dynamically-adjust-the-recursion-depth-for-eager-loading-in-the-sqlal,
is there any way to set the join_depth on the query object rather than on
the relationship?
Right now I have:
class Geography(db.Model):
id = db.Column(UUID, default=uuid.uuid4, primary_key=True)
name = db.Column(db.String(), nullable=False, unique=True)
parent_geography_id = db.Column(UUID, db.ForeignKey(id))
children = db.relationship(
lambda: Geography,
lazy="joined",
join_depth=3,
backref=backref("parent", remote_side=[id]),
)
however if I would like to customize the join_depth on the query.
A related issue is that if I then take Geography.query.options(raiseload("*",
sql_only=True)), the join_depth seems to be lost and I just get an
exception. Also printing the query when the options is set shows that the
join_depth is not used.
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