126 lines
4.1 KiB
Python
126 lines
4.1 KiB
Python
"""identite_admission
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Revision ID: 497ba81343f7
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Revises: 5c44d0d215ca
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Create Date: 2023-10-14 10:09:02.330634
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Diverses amlioration du modèle Identite:
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- boursier non null
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- departement non null
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- admission : 1 seule admission (one-to-one)
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- adresse: etudid non null.
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"""
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from alembic import op
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import sqlalchemy as sa
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from sqlalchemy.orm import sessionmaker # added by ev
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# revision identifiers, used by Alembic.
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revision = "497ba81343f7"
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down_revision = "5c44d0d215ca"
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branch_labels = None
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depends_on = None
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Session = sessionmaker()
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def upgrade():
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bind = op.get_bind()
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session = Session(bind=bind)
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# Enleve les éventuels nulls de boursier
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session.execute(
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sa.text(
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"""
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UPDATE identite SET boursier = false WHERE boursier IS NULL;
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"""
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)
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)
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# Enleve les éventuelles adresses orphelines:
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session.execute(
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sa.text(
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"""
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DELETE FROM adresse WHERE etudid IS NULL;
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"""
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)
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)
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# Affecte arbitrairement les éventuels étudiants sans département au 1er
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# (il ne devrait pas y en avoir, sauf essais manuels ou bugs)
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session.execute(
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sa.text(
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"""
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UPDATE identite SET dept_id = (
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SELECT MIN(id)
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FROM departement
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) WHERE dept_id IS NULL;
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"""
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)
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)
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with op.batch_alter_table("identite", schema=None) as batch_op:
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batch_op.add_column(sa.Column("admission_id", sa.Integer(), nullable=True))
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batch_op.alter_column("boursier", existing_type=sa.BOOLEAN(), nullable=False)
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batch_op.alter_column("dept_id", existing_type=sa.Integer(), nullable=False)
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batch_op.create_foreign_key(
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"admissions_etudid_fkey", "admissions", ["admission_id"], ["id"]
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)
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batch_op.drop_constraint("identite_dept_id_code_ine_key", type_="unique")
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batch_op.drop_constraint("identite_dept_id_code_nip_key", type_="unique")
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with op.batch_alter_table("adresse", schema=None) as batch_op:
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batch_op.alter_column("etudid", existing_type=sa.Integer(), nullable=False)
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batch_op.drop_constraint("adresse_etudid_fkey", type_="foreignkey")
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batch_op.create_foreign_key(
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"adresse_etudid_fkey", "identite", ["etudid"], ["id"]
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)
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# Elimine eventuels duplicats dans Admission
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session.execute(
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sa.text(
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"""
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DELETE FROM admissions
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WHERE id NOT IN (
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SELECT MIN(id)
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FROM admissions
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GROUP BY etudid
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);
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"""
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)
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)
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# Copie id
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session.execute(
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sa.text(
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"""
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UPDATE identite SET admission_id = admissions.id
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FROM admissions WHERE admissions.etudid = identite.id;
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"""
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)
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)
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with op.batch_alter_table("admissions", schema=None) as batch_op:
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batch_op.drop_constraint("admissions_etudid_fkey", type_="foreignkey")
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# laisse l'ancienne colonne pour downgrade (tests)
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# batch_op.drop_column('etudid')
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def downgrade():
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with op.batch_alter_table("identite", schema=None) as batch_op:
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batch_op.drop_constraint("admissions_etudid_fkey", type_="foreignkey")
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batch_op.alter_column("boursier", existing_type=sa.BOOLEAN(), nullable=True)
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batch_op.alter_column("dept_id", existing_type=sa.Integer(), nullable=True)
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batch_op.drop_column("admission_id")
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with op.batch_alter_table("admissions", schema=None) as batch_op:
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# batch_op.add_column(
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# sa.Column("etudid", sa.INTEGER(), autoincrement=False, nullable=True)
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# )
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batch_op.create_foreign_key(
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"admissions_etudid_fkey", "identite", ["etudid"], ["id"], ondelete="CASCADE"
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)
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with op.batch_alter_table("adresse", schema=None) as batch_op:
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batch_op.drop_constraint("adresse_etudid_fkey", type_="foreignkey")
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batch_op.create_foreign_key(
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"adresse_etudid_fkey", "identite", ["etudid"], ["id"], ondelete="CASCADE"
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)
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batch_op.alter_column("etudid", existing_type=sa.INTEGER(), nullable=True)
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