61 lines
1.9 KiB
Python
61 lines
1.9 KiB
Python
"""Приглашения в группу: таблица group_invitations.
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Идемпотентна (как 0005): на свежей БД таблицу создаёт 0001 (create_all из актуальных
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моделей); на существующей — create_table здесь.
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Revision ID: 0006_group_invitations
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Revises: 0005_achievements
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Create Date: 2026-06-17
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"""
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from typing import Sequence, Union
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import sqlalchemy as sa
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from sqlalchemy import inspect
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from alembic import op
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revision: str = "0006_group_invitations"
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down_revision: Union[str, None] = "0005_achievements"
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branch_labels: Union[str, Sequence[str], None] = None
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depends_on: Union[str, Sequence[str], None] = None
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def upgrade() -> None:
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bind = op.get_bind()
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insp = inspect(bind)
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if "group_invitations" in insp.get_table_names():
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return
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op.create_table(
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"group_invitations",
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sa.Column("id", sa.Integer(), primary_key=True),
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sa.Column(
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"group_id",
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sa.Integer(),
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sa.ForeignKey("groups.id", ondelete="CASCADE"),
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nullable=False,
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),
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sa.Column(
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"user_id",
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sa.Integer(),
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sa.ForeignKey("users.id", ondelete="CASCADE"),
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nullable=False,
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),
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sa.Column(
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"invited_by_id",
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sa.Integer(),
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sa.ForeignKey("users.id", ondelete="SET NULL"),
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nullable=True,
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),
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sa.Column("created_at", sa.DateTime(), nullable=False),
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sa.UniqueConstraint("group_id", "user_id", name="uq_group_invitation"),
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)
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op.create_index("ix_group_invitations_group_id", "group_invitations", ["group_id"])
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op.create_index("ix_group_invitations_user_id", "group_invitations", ["user_id"])
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def downgrade() -> None:
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bind = op.get_bind()
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insp = inspect(bind)
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if "group_invitations" in insp.get_table_names():
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op.drop_table("group_invitations")
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