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alembic/versions/2023_11_08_b105b426af99_rename_family_in_db.py
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"""Rename family in db | ||
Revision ID: b105b426af99 | ||
Revises: 70e641d723b3 | ||
Create Date: 2023-11-08 15:13:25.197537 | ||
""" | ||
from alembic import op | ||
import sqlalchemy as sa | ||
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# revision identifiers, used by Alembic. | ||
revision = "b105b426af99" | ||
down_revision = "70e641d723b3" | ||
branch_labels = None | ||
depends_on = None | ||
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def upgrade(): | ||
# Drop foreign key constraints that reference the unique constraint to be dropped | ||
op.drop_constraint("analysis_ibfk_1", "analysis", type_="foreignkey") | ||
op.drop_constraint("family_sample_ibfk_1", "family_sample", type_="foreignkey") | ||
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# Rename tables | ||
op.rename_table("family", "case") | ||
op.rename_table("family_sample", "case_sample") | ||
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# Rename foreign keys | ||
op.alter_column("analysis", "family_id", new_column_name="case_id", existing_type=sa.Integer()) | ||
op.alter_column( | ||
"case_sample", "family_id", new_column_name="case_id", existing_type=sa.Integer() | ||
) | ||
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# Drop the unique constraint | ||
op.drop_constraint("_family_sample_uc", "case_sample", type_="unique") | ||
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# Create the new unique constraint | ||
op.create_unique_constraint("_case_sample_uc", "case_sample", ["case_id", "sample_id"]) | ||
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# Recreate foreign key constraints referencing the new unique constraint | ||
op.create_foreign_key("analysis_ibfk_1", "analysis", "case", ["case_id"], ["id"]) | ||
op.create_foreign_key("case_sample_ibfk_1", "case_sample", "case", ["case_id"], ["id"]) | ||
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def downgrade(): | ||
# Drop foreign key constraints before renaming them back | ||
op.drop_constraint("analysis_ibfk_1", "analysis", type_="foreignkey") | ||
op.drop_constraint("case_sample_ibfk_1", "case_sample", type_="foreignkey") | ||
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# Drop the unique constraint | ||
op.drop_constraint("_case_sample_uc", "case_sample", type_="unique") | ||
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# Rename foreign keys back to original before renaming tables | ||
op.alter_column("analysis", "case_id", new_column_name="family_id", existing_type=sa.Integer()) | ||
op.alter_column( | ||
"case_sample", "case_id", new_column_name="family_id", existing_type=sa.Integer() | ||
) | ||
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# Rename tables back to original | ||
op.rename_table("case", "family") | ||
op.rename_table("case_sample", "family_sample") | ||
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# Recreate the original unique constraint | ||
op.create_unique_constraint("_family_sample_uc", "family_sample", ["family_id", "sample_id"]) | ||
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# Recreate foreign key constraints referencing the original unique constraint | ||
op.create_foreign_key("analysis_ibfk_1", "analysis", "family", ["family_id"], ["id"]) | ||
op.create_foreign_key("family_sample_ibfk_1", "family_sample", "family", ["family_id"], ["id"]) |
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