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35 lines
929 B
Python
35 lines
929 B
Python
"""
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2.2.3 添加 downloadhistory.custom_words 字段，用于整理时应用订阅识别词
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版本标识： 58edfac72c32
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前置版本： 41ef1dd7467c
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创建时间： 2026-01-19
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"""
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from alembic import op
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import sqlalchemy as sa
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# Alembic 使用以下标识连接迁移版本链。
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revision = "58edfac72c32"
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down_revision = "41ef1dd7467c"
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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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"""
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为下载历史增加自定义识别词，供后续整理复用订阅线索。
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"""
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conn = op.get_bind()
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inspector = sa.inspect(conn)
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dh_columns = inspector.get_columns('downloadhistory')
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if not any(c['name'] == 'custom_words' for c in dh_columns):
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op.add_column('downloadhistory', sa.Column('custom_words', sa.String, nullable=True))
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def downgrade() -> None:
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"""
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移除下载历史的自定义识别词字段。
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"""
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op.drop_column('downloadhistory', 'custom_words')
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