61 lines
2.7 KiB
Python
61 lines
2.7 KiB
Python
"""rule_moment_judgments — whether a rule belongs on a moment, and who said so
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Revision ID: 0118
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Revises: 0117
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Create Date: 2026-10-05
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One row per (rule, moment) with a state: `suggested` while a proposal waits
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for a judgment, `confirmed` or `rejected` once one is made. The mount itself
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stays in rule_moments; this records the proposals that are not mounts yet and
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the rejections that must stop them being proposed again. Moment '' is "no
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moment fits this rule". CASCADE on the rule — a judgment about a rule that no
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longer exists says nothing. No backfill: the mounts made before this table
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were judgments too, but recording them now would invent who made them.
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"""
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import sqlalchemy as sa
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from sqlalchemy.dialects import postgresql
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from alembic import op
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revision = "0118"
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down_revision = "0117"
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branch_labels = None
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depends_on = None
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# One place each, so the CHECKs and the model's JUDGMENT_STATES / SOURCES
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# cannot drift (a new value later means DROP + ADD CONSTRAINT in the same
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# migration).
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_STATES = ("suggested", "confirmed", "rejected")
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_SOURCES = ("pass", "signal", "edit")
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def upgrade() -> None:
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op.create_table(
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"rule_moment_judgments",
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sa.Column("id", sa.BigInteger(), primary_key=True),
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sa.Column("rule_id", sa.BigInteger(), sa.ForeignKey("rules.id", ondelete="CASCADE"), nullable=False),
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sa.Column("moment", sa.Text(), nullable=False),
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sa.Column("state", sa.Text(), nullable=False, server_default="suggested"),
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sa.Column("source", sa.Text(), nullable=False, server_default="pass"),
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sa.Column("note", sa.Text(), nullable=True),
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sa.Column("evidence", postgresql.JSONB(), nullable=True),
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sa.Column("judged_at", sa.DateTime(timezone=True), nullable=True),
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sa.Column("created_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.text("now()")),
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sa.UniqueConstraint("rule_id", "moment", name="uq_rule_moment_judgments_pair"),
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)
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op.create_check_constraint(
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"ck_rule_moment_judgments_state", "rule_moment_judgments",
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"state IN (" + ", ".join(f"'{s}'" for s in _STATES) + ")",
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)
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op.create_check_constraint(
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"ck_rule_moment_judgments_source", "rule_moment_judgments",
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"source IN (" + ", ".join(f"'{s}'" for s in _SOURCES) + ")",
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)
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op.create_index("ix_rule_moment_judgments_rule_id", "rule_moment_judgments", ["rule_id"])
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def downgrade() -> None:
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op.drop_index("ix_rule_moment_judgments_rule_id", table_name="rule_moment_judgments")
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op.drop_constraint("ck_rule_moment_judgments_source", "rule_moment_judgments", type_="check")
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op.drop_constraint("ck_rule_moment_judgments_state", "rule_moment_judgments", type_="check")
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op.drop_table("rule_moment_judgments")
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