from api.database import (Model, SurrogatePK, db,
                          Column, reference_col, relationship)


class TargetExchange(SurrogatePK, Model):
    __tablename__ = "target-exchange"
    name = Column(db.String(255), unique=True, nullable=False)

    @staticmethod
    def ensure_created(name):
        if TargetExchange.query.filter_by(name=name).first() is None:
            TargetExchange(name=name).save()