ScoDoc-Lille/migrations/versions/c701224fa255_validation_niveaux_inferieurs.py

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"""validation niveaux inferieurs
Revision ID: c701224fa255
Revises: d84bc592584e
Create Date: 2023-06-11 11:08:05.553898
"""
from alembic import op
import sqlalchemy as sa
from sqlalchemy.orm import sessionmaker # added by ev
# revision identifiers, used by Alembic.
revision = "c701224fa255"
2023-06-20 15:50:56 +02:00
down_revision = "b555390780b2"
branch_labels = None
depends_on = None
Session = sessionmaker()
def upgrade():
# Ajoute la colonne formation_id, nullable, la peuple puis la rend non nullable
op.add_column(
"apc_validation_annee", sa.Column("formation_id", sa.Integer(), nullable=True)
)
op.create_foreign_key(
"apc_validation_annee_formation_id_fkey",
"apc_validation_annee",
"notes_formations",
["formation_id"],
["id"],
)
# Affecte la formation des anciennes validations
bind = op.get_bind()
session = Session(bind=bind)
session.execute(
sa.text(
"""
UPDATE apc_validation_annee AS a
SET formation_id = (
SELECT f.id
FROM notes_formations f
JOIN notes_formsemestre s ON f.id = s.formation_id
WHERE s.id = a.formsemestre_id
)
WHERE a.formsemestre_id IS NOT NULL;
"""
)
)
op.alter_column(
"apc_validation_annee",
"formation_id",
nullable=False,
)
def downgrade():
with op.batch_alter_table("apc_validation_annee", schema=None) as batch_op:
batch_op.drop_constraint(
"apc_validation_annee_formation_id_fkey", type_="foreignkey"
)
batch_op.drop_column("formation_id")