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Ian Keane 2026-06-09 15:07:08 -04:00
commit 064e672ab7
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migrations/versions/84db90f5499e_tune_by_instrument.py Normal file
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"""replace banjo/fiddle with instruments + tune_by_instrument tables
Revision ID: 84db90f5499e
Revises: 2bd4f3ff0ccc
Create Date: 2026-06-09
"""
from alembic import op
import sqlalchemy as sa
revision = "84db90f5499e"
down_revision = "2bd4f3ff0ccc"
branch_labels = None
depends_on = None
def upgrade() -> None:
# 1. Drop old per-instrument tables (and their notes)
op.drop_table("banjo")
op.drop_table("fiddle")
# Rename notes → tune_notes
op.rename_table("notes", "tune_notes")
# 2. Instruments lookup table
op.create_table(
"instruments",
sa.Column("id", sa.Integer(), primary_key=True, autoincrement=True, nullable=False),
sa.Column("name", sa.String(), nullable=False, unique=True),
)
# Seed banjo and fiddle
op.execute("INSERT INTO instruments (name) VALUES ('banjo'), ('fiddle')")
# 3. Generic tune_by_instrument table
op.create_table(
"tune_by_instrument",
sa.Column("id", sa.Integer(), primary_key=True, autoincrement=True, nullable=False),
sa.Column("tune_id", sa.Integer(),
sa.ForeignKey("tunes.id", ondelete="CASCADE"), nullable=False),
sa.Column("instrument_id", sa.Integer(),
sa.ForeignKey("instruments.id", ondelete="CASCADE"), nullable=False),
sa.Column("learned_from_id", sa.Integer(),
sa.ForeignKey("musicians.id", ondelete="SET NULL"), nullable=True),
sa.Column("date_learned", sa.Date(), nullable=True),
sa.Column("tuning", sa.String(), nullable=True),
sa.Column("callable", sa.Boolean(), nullable=True),
sa.Column("review", sa.Boolean(), nullable=True),
sa.Column("to_learn", sa.Boolean(), nullable=True),
sa.Column("difficulty", sa.String(), nullable=True),
sa.UniqueConstraint("tune_id", "instrument_id", name="uq_tune_instrument"),
)
# 4. Instrument-specific notes
op.create_table(
"tune_by_instrument_notes",
sa.Column("id", sa.Integer(), primary_key=True, autoincrement=True, nullable=False),
sa.Column("tune_by_instrument_id", sa.Integer(),
sa.ForeignKey("tune_by_instrument.id", ondelete="CASCADE"), nullable=False),
sa.Column("note", sa.String(), nullable=True),
)
def downgrade() -> None:
op.drop_table("tune_by_instrument_notes")
op.drop_table("tune_by_instrument")
op.drop_table("instruments")
op.rename_table("tune_notes", "notes")
op.create_table(
"banjo",
sa.Column("id", sa.Integer(), primary_key=True, autoincrement=True, nullable=False),
sa.Column("tune_id", sa.Integer(), sa.ForeignKey("tunes.id", ondelete="CASCADE"), nullable=False, unique=True),
sa.Column("learned_from_id", sa.Integer(), sa.ForeignKey("musicians.id", ondelete="SET NULL"), nullable=True),
sa.Column("date_learned", sa.Date(), nullable=True),
sa.Column("tuning", sa.String(), nullable=True),
sa.Column("callable", sa.Boolean(), nullable=True),
sa.Column("review", sa.Boolean(), nullable=True),
sa.Column("to_learn", sa.Boolean(), nullable=True),
sa.Column("difficulty", sa.String(), nullable=True),
)
op.create_table(
"fiddle",
sa.Column("id", sa.Integer(), primary_key=True, autoincrement=True, nullable=False),
sa.Column("tune_id", sa.Integer(), sa.ForeignKey("tunes.id", ondelete="CASCADE"), nullable=False, unique=True),
sa.Column("learned_from_id", sa.Integer(), sa.ForeignKey("musicians.id", ondelete="SET NULL"), nullable=True),
sa.Column("date_learned", sa.Date(), nullable=True),
sa.Column("tuning", sa.String(), nullable=True),
sa.Column("callable", sa.Boolean(), nullable=True),
sa.Column("review", sa.Boolean(), nullable=True),
sa.Column("to_learn", sa.Boolean(), nullable=True),
sa.Column("difficulty", sa.String(), nullable=True),
)