45 lines
1.1 KiB
Python
45 lines
1.1 KiB
Python
from typing import Optional
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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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class Meta:
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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(max_length=100)
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class Course(ormar.Model):
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class Meta:
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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(max_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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# set up a relation with actual Model instance
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course = Course(name='Math', completed=False, department=department)
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# set up relation with only related model pk value
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course2 = Course(name='Math II', completed=False, department=department.pk)
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# set up a relation with dictionary corresponding to related model
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course3 = Course(name='Math III', completed=False, department=department.dict())
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# explicitly set up None
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course4 = Course(name='Math III', completed=False, department=None)
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