guke
3dca126411
微信优惠券增加美团/京东中间页，领券前获取微信头像授权（主功能） --------- Co-authored-by: guke <guke@autohome.com.cn> Reviewed-on: #75 Co-authored-by: guke <guke@wonderable.ai> Co-committed-by: guke <guke@wonderable.ai>
87 lines
3.8 KiB
Python
87 lines
3.8 KiB
Python
"""cps v2: 活动 payload(淘口令/京东链接) + 群多平台/sid 可空 + 点击 event_type
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Revision ID: cps_v2_platforms
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Revises: cps_link_tables
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Create Date: 2026-06-17 11:00:00.000000
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接入淘宝/京东:
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- cps_activity.payload 淘宝整段淘口令文本 / 京东推广链接(美团仍用 act_id)
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- cps_group.platforms 该群发哪些平台(多选);sid 改可空(纯淘宝/京东无 sid)
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- cps_link.sid 可空 + target_url 加长(淘口令较长)
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- cps_click.event_type visit / copy(淘宝落地页"复制口令")
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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 import postgresql
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revision: str = "cps_v2_platforms"
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down_revision: Union[str, Sequence[str], None] = "cps_link_tables"
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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 _has_column(insp: sa.Inspector, table: str, column: str) -> bool:
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return any(c["name"] == column for c in insp.get_columns(table))
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def upgrade() -> None:
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bind = op.get_bind()
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insp = sa.inspect(bind)
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# SQLite 不认 ::jsonb cast(会报 "unrecognized token: :"),只有 PG 用显式 cast。
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# 两边列类型都靠上面的 with_variant 区分,这里只管 server_default 文本。
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platforms_default = (
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sa.text("'[\"meituan\"]'::jsonb")
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if bind.dialect.name == "postgresql"
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else sa.text("'[\"meituan\"]'")
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)
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# 活动:淘宝淘口令 / 京东链接
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# 加 add_column 存在性守卫:本迁移历史上在 SQLite 第一次跑时加完 payload 即在
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# platforms 那步炸掉(::jsonb),DDL 非事务不回滚 → 半应用状态。守卫让其可自愈重跑。
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if not _has_column(insp, "cps_activity", "payload"):
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op.add_column("cps_activity", sa.Column("payload", sa.Text(), nullable=True))
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# 群:多平台(现有群都是美团,server_default 回填)+ sid 可空。
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# SQLite 不支持 ALTER COLUMN,必须用 batch(重建表)才能改 nullable;PG 走原生 ALTER。
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with op.batch_alter_table("cps_group") as batch_op:
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if not _has_column(insp, "cps_group", "platforms"):
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batch_op.add_column(
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sa.Column(
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"platforms",
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sa.JSON().with_variant(postgresql.JSONB(), "postgresql"),
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nullable=False,
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server_default=platforms_default,
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)
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)
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batch_op.alter_column("sid", existing_type=sa.String(64), nullable=True)
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# link:sid 可空 + target 加长
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with op.batch_alter_table("cps_link") as batch_op:
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batch_op.alter_column("sid", existing_type=sa.String(64), nullable=True)
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batch_op.alter_column("target_url", existing_type=sa.String(1024), type_=sa.String(2048))
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# click:sid 可空 + 事件类型
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with op.batch_alter_table("cps_click") as batch_op:
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batch_op.alter_column("sid", existing_type=sa.String(64), nullable=True)
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if not _has_column(insp, "cps_click", "event_type"):
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batch_op.add_column(
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sa.Column("event_type", sa.String(16), nullable=False, server_default="visit")
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)
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def downgrade() -> None:
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with op.batch_alter_table("cps_click") as batch_op:
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batch_op.drop_column("event_type")
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batch_op.alter_column("sid", existing_type=sa.String(64), nullable=False)
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with op.batch_alter_table("cps_link") as batch_op:
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batch_op.alter_column("target_url", existing_type=sa.String(2048), type_=sa.String(1024))
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batch_op.alter_column("sid", existing_type=sa.String(64), nullable=False)
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with op.batch_alter_table("cps_group") as batch_op:
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batch_op.drop_column("platforms")
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batch_op.alter_column("sid", existing_type=sa.String(64), nullable=False)
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with op.batch_alter_table("cps_activity") as batch_op:
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batch_op.drop_column("payload")
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