5c3e9b83c8
- "backend/models.py" - "alembic/versions/002_technique_page_versions.py" - "backend/pipeline/stages.py" GSD-Task: S04/T01
39 lines
1.4 KiB
Python
39 lines
1.4 KiB
Python
"""technique_page_versions table for article versioning
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Revision ID: 002_technique_page_versions
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Revises: 001_initial
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Create Date: 2026-03-30
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"""
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from typing import Sequence, Union
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from alembic import op
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import sqlalchemy as sa
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from sqlalchemy.dialects.postgresql import JSONB, UUID
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# revision identifiers, used by Alembic.
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revision: str = "002_technique_page_versions"
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down_revision: Union[str, None] = "001_initial"
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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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op.create_table(
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"technique_page_versions",
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sa.Column("id", UUID(as_uuid=True), primary_key=True, server_default=sa.text("gen_random_uuid()")),
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sa.Column("technique_page_id", UUID(as_uuid=True), sa.ForeignKey("technique_pages.id", ondelete="CASCADE"), nullable=False),
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sa.Column("version_number", sa.Integer, nullable=False),
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sa.Column("content_snapshot", JSONB, nullable=False),
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sa.Column("pipeline_metadata", JSONB, nullable=True),
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sa.Column("created_at", sa.DateTime(), nullable=False, server_default=sa.func.now()),
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)
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op.create_index(
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"ix_technique_page_versions_page_version",
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"technique_page_versions",
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["technique_page_id", "version_number"],
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unique=True,
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)
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def downgrade() -> None:
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op.drop_table("technique_page_versions")
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