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