41 lines
1.0 KiB
Python
41 lines
1.0 KiB
Python
import databases
|
|
import sqlalchemy
|
|
|
|
import orm
|
|
|
|
database = databases.Database("sqlite:///db.sqlite")
|
|
metadata = sqlalchemy.MetaData()
|
|
|
|
|
|
class Department(orm.Model):
|
|
__database__ = database
|
|
__metadata__ = metadata
|
|
|
|
id = orm.Integer(primary_key=True)
|
|
name = orm.String(length=100)
|
|
|
|
|
|
class Course(orm.Model):
|
|
__database__ = database
|
|
__metadata__ = metadata
|
|
|
|
id = orm.Integer(primary_key=True)
|
|
name = orm.String(length=100)
|
|
completed = orm.Boolean(default=False)
|
|
department = orm.ForeignKey(Department)
|
|
|
|
|
|
department = Department(name="Science")
|
|
course = Course(name="Math", completed=False, department=department)
|
|
|
|
print('name' in course.__dict__)
|
|
# False <- property name is not stored on Course instance
|
|
print(course.name)
|
|
# Math <- value returned from underlying pydantic model
|
|
print('department' in course.__dict__)
|
|
# False <- related model is not stored on Course instance
|
|
print(course.department)
|
|
# Department(id=None, name='Science') <- Department model
|
|
# returned from RelationshipManager
|
|
print(course.department.name)
|
|
# Science |