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import datetime
import databases
import ormar
import sqlalchemy
database = databases.Database("sqlite:///db.sqlite")
metadata = sqlalchemy.MetaData()
class Course(ormar.Model):
ormar_config = ormar.OrmarConfig(
database=database,
metadata=metadata,
# define your constraints in OrmarConfig of the model
# it's a list that can contain multiple constraints
# hera a combination of name and column will have a level check in the db
constraints=[
ormar.CheckColumns("start_time < end_time", name="date_check"),
],
)
id: int = ormar.Integer(primary_key=True)
name: str = ormar.String(max_length=100)
start_date: datetime.date = ormar.Date()
end_date: datetime.date = ormar.Date()
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