0009_pr_number.py
python
sha256:a10adeeb7a0169cb9900f9806ed7a973047258abb6283724fe55e8eb68ff3f0a
init: musehub initial commit
Human
171 days ago
| 1 | """Add pr_number sequential integer to proposals. |
| 2 | |
| 3 | Each proposal now gets a per-repository sequential integer (pr_number) in |
| 4 | addition to its UUID primary key, mirroring idiomatic proposal numbering. The |
| 5 | combination (repo_id, pr_number) is unique and indexed for fast lookup. |
| 6 | |
| 7 | Revision ID: 0009 |
| 8 | Revises: 0008 |
| 9 | """ |
| 10 | from __future__ import annotations |
| 11 | |
| 12 | from alembic import op |
| 13 | import sqlalchemy as sa |
| 14 | |
| 15 | revision: str = "0009" |
| 16 | down_revision: str = "0008" |
| 17 | branch_labels = None |
| 18 | depends_on = None |
| 19 | |
| 20 | |
| 21 | def upgrade() -> None: |
| 22 | op.add_column( |
| 23 | "musehub_pull_requests", |
| 24 | sa.Column("pr_number", sa.Integer(), nullable=False, server_default="0"), |
| 25 | ) |
| 26 | op.create_index( |
| 27 | "ix_musehub_pull_requests_repo_pr_number", |
| 28 | "musehub_pull_requests", |
| 29 | ["repo_id", "pr_number"], |
| 30 | ) |
| 31 | op.create_unique_constraint( |
| 32 | "uq_musehub_pull_requests_repo_pr_number", |
| 33 | "musehub_pull_requests", |
| 34 | ["repo_id", "pr_number"], |
| 35 | ) |
| 36 | # Remove the temporary server_default now that the column exists. |
| 37 | op.alter_column( |
| 38 | "musehub_pull_requests", |
| 39 | "pr_number", |
| 40 | server_default=None, |
| 41 | ) |
| 42 | |
| 43 | |
| 44 | def downgrade() -> None: |
| 45 | op.drop_constraint( |
| 46 | "uq_musehub_pull_requests_repo_pr_number", |
| 47 | "musehub_pull_requests", |
| 48 | type_="unique", |
| 49 | ) |
| 50 | op.drop_index( |
| 51 | "ix_musehub_pull_requests_repo_pr_number", |
| 52 | table_name="musehub_pull_requests", |
| 53 | ) |
| 54 | op.drop_column("musehub_pull_requests", "pr_number") |
File History
1 commit
sha256:a10adeeb7a0169cb9900f9806ed7a973047258abb6283724fe55e8eb68ff3f0a
init: musehub initial commit
Human
171 days ago