36 lines
1.2 KiB
Python
36 lines
1.2 KiB
Python
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"""add learnable_languages table
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Revision ID: 0004
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Revises: 0003
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Create Date: 2026-03-27
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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 alembic import op
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from sqlalchemy.dialects import postgresql
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revision: str = "0004"
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down_revision: Union[str, None] = "0003"
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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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"learnable_languages",
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sa.Column("id", postgresql.UUID(as_uuid=True), primary_key=True),
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sa.Column("user_id", postgresql.UUID(as_uuid=True), sa.ForeignKey("users.id"), nullable=False),
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sa.Column("source_language", sa.String(10), nullable=False),
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sa.Column("target_language", sa.String(10), nullable=False),
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sa.Column("proficiencies", postgresql.ARRAY(sa.String(5)), nullable=False),
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sa.UniqueConstraint("user_id", "source_language", "target_language", name="uq_learnable_language_user_pair"),
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)
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op.create_index("ix_learnable_languages_user_id", "learnable_languages", ["user_id"])
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def downgrade() -> None:
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op.drop_index("ix_learnable_languages_user_id", table_name="learnable_languages")
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op.drop_table("learnable_languages")
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