55 lines
2.2 KiB
Python
55 lines
2.2 KiB
Python
"""create class memberships table if missing
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Revision ID: 20260427_create_memberships
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Revises: 20260426_remove_legacy
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Create Date: 2026-04-27 10:45:00
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"""
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from __future__ import annotations
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from alembic import op
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import sqlalchemy as sa
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revision = "20260427_create_memberships"
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down_revision = "20260426_remove_legacy"
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branch_labels = None
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depends_on = None
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def upgrade() -> None:
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bind = op.get_bind()
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inspector = sa.inspect(bind)
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if "class_memberships" not in set(inspector.get_table_names()):
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op.create_table(
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"class_memberships",
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sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
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sa.Column("user_id", sa.Integer(), nullable=False),
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sa.Column("class_id", sa.Integer(), nullable=False),
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sa.Column("membership_role", sa.String(length=20), nullable=False, server_default="student"),
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sa.Column("committee_role", sa.String(length=50), nullable=True),
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sa.Column("class_permissions", sa.Text(), nullable=True),
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sa.Column("created_at", sa.DateTime(), server_default=sa.func.now(), nullable=False),
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sa.Column("updated_at", sa.DateTime(), server_default=sa.func.now(), nullable=False),
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sa.ForeignKeyConstraint(["user_id"], ["users.id"]),
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sa.ForeignKeyConstraint(["class_id"], ["classes.id"]),
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sa.PrimaryKeyConstraint("id"),
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sa.UniqueConstraint("user_id", "class_id", name="uq_class_membership_user_class"),
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)
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op.create_index("ix_class_memberships_user_id", "class_memberships", ["user_id"])
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op.create_index("ix_class_memberships_class_id", "class_memberships", ["class_id"])
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def downgrade() -> None:
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bind = op.get_bind()
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inspector = sa.inspect(bind)
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tables = set(inspector.get_table_names())
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if "class_memberships" in tables:
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indexes = {index["name"] for index in inspector.get_indexes("class_memberships")}
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if "ix_class_memberships_class_id" in indexes:
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op.drop_index("ix_class_memberships_class_id", table_name="class_memberships")
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if "ix_class_memberships_user_id" in indexes:
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op.drop_index("ix_class_memberships_user_id", table_name="class_memberships")
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op.drop_table("class_memberships")
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