forked from ScoDoc/ScoDoc
111 lines
3.5 KiB
Python
111 lines
3.5 KiB
Python
"""Change ApcValidationAnnee
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Revision ID: 829683efddc4
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Revises: c701224fa255
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Create Date: 2023-06-28 09:47:16.591028
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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 = "829683efddc4"
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down_revision = "c701224fa255"
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branch_labels = None
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depends_on = None
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Session = sessionmaker()
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# Voir https://stackoverflow.com/questions/24082542/check-if-a-table-column-exists-in-the-database-using-sqlalchemy-and-alembic
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from sqlalchemy import inspect
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def column_exists(table_name, column_name):
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bind = op.get_context().bind
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insp = inspect(bind)
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columns = insp.get_columns(table_name)
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return any(c["name"] == column_name for c in columns)
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def upgrade():
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if column_exists("apc_validation_annee", "referentiel_competence_id"):
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return # utile durant developpement
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# Enleve la contrainte erronée
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with op.batch_alter_table("apc_validation_annee", schema=None) as batch_op:
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batch_op.drop_constraint(
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"apc_validation_annee_etudid_annee_scolaire_ordre_key", type_="unique"
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)
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# Ajoute colonne referentiel, nullable pour l'instant
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batch_op.add_column(
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sa.Column("referentiel_competence_id", sa.Integer(), nullable=True)
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)
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# Affecte le referentiel des anciennes validations
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bind = op.get_bind()
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session = Session(bind=bind)
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session.execute(
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sa.text(
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"""
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UPDATE apc_validation_annee AS a
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SET referentiel_competence_id = (
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SELECT f.referentiel_competence_id
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FROM notes_formations f
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WHERE f.id = a.formation_id
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)
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"""
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)
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)
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# En principe, on n'a pas pu entrer de validation sur des formations sans referentiel
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# par prudence, on les supprime avant d'ajouter la contrainte
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session.execute(
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sa.text(
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"DELETE FROM apc_validation_annee WHERE referentiel_competence_id is NULL"
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)
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)
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op.alter_column(
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"apc_validation_annee",
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"referentiel_competence_id",
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nullable=False,
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)
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op.create_foreign_key(
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"apc_validation_annee_refcomp_fkey",
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"apc_validation_annee",
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"apc_referentiel_competences",
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["referentiel_competence_id"],
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["id"],
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)
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# Efface les validations d'année dupliquées
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# (garde la validation la plus récente)
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session.execute(
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sa.text(
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"""
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DELETE FROM apc_validation_annee t1
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WHERE t1.id <> (SELECT max(t2.id)
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FROM apc_validation_annee t2
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WHERE t1.etudid = t2.etudid
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AND t1.referentiel_competence_id = t2.referentiel_competence_id
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AND t1.ordre = t2.ordre
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)
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"""
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)
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)
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# Et ajoute la contrainte unicité de décision année par étudiant/ref. comp.:
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op.create_unique_constraint(
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"apc_validation_annee_etudid_ordre_refcomp_key",
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"apc_validation_annee",
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["etudid", "ordre", "referentiel_competence_id"],
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)
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op.drop_column("apc_validation_annee", "formation_id")
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def downgrade():
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# Se contente de ré-ajouter la colonne formation_id sans re-générer son contenu
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with op.batch_alter_table("apc_validation_annee", schema=None) as batch_op:
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# batch_op.drop_constraint(
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# "apc_validation_annee_etudid_ordre_refcomp_key", type_="unique"
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# )
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# batch_op.drop_column("referentiel_competence_id")
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batch_op.add_column(sa.Column("formation_id", sa.Integer(), nullable=True))
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