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shaguabijia-app-server/docs/database/invite_cash_transaction.md
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# invite_cash_transaction — 邀请奖励金流水账本(分)
> 模型 `app/models/wallet.py`(`InviteCashTransaction`) · 仓库 `app/repositories/wallet.py`(`grant_invite_cash` / 提现路径按 `source` 分账) · 接口 [wallet-account](../api/wallet/wallet-account.md)(余额)/ [wallet-withdraw](../api/wallet/wallet-withdraw.md)(`source=invite_cash` 提现) · [← 索引](./README.md) · [总览](./OVERVIEW.md)
**邀请奖励金**(现金,分)的流水账本,与金币兑换的 `cash_transaction` **物理隔离**、结构同构:`balance_after_cents` 记的是 `coin_account.invite_cash_balance_cents`。隔离原因:邀请奖励金有独立的发放口径(好友**比价并下单**才发,#113)与独立的提现对账(`withdraw_order.source='invite_cash'`,#121),混在现金账本里无法分账校验。#82 新增(2026-06-27)。
## 用在哪 / 增删改查
- **C(插入)**:每次奖励金变动一笔:
| 动作 / endpoint | `biz_type` | `amount_cents` | `ref_id` 指向 |
|---|---|---|---|
| 好友比价并下单发奖(`POST /order/report``invite.try_reward_on_compare``grant_invite_cash`) | `invite_reward` | + | 被邀请人 `user.id`(字符串) |
| 发起提现 `POST /wallet/withdraw`(`source=invite_cash`) | `invite_withdraw` | | `withdraw_order.out_bill_no` |
| 该提现失败/审核拒绝退款 | `invite_withdraw_refund` | + | `withdraw_order.out_bill_no` |
| admin 手动调整 `POST /admin/api/users/{id}/cash`(`account=invite_cash`,#95) | `admin_grant` / `admin_deduct` | + / | null(原因记 `remark`=`admin:<reason>`) |
- **U / D**:无。账本只追加。
- **R**:admin 用户 360 / 提现资金账本校验 `GET /admin/api/withdraws/ledger-check`(按 `source` 分账对账,#121);C 端邀请页战绩(`invite.get_reward_stats`:余额 + 累计已提)。
## 字段
| 列 | 类型 | 约束 / 默认 | 说明 |
|---|---|---|---|
| `id` | Integer | PK, autoincrement | |
| `user_id` | Integer | FK→user.id, index, NOT NULL | 归属用户(= 邀请人) |
| `amount_cents` | Integer | NOT NULL | 本笔变动(分);正=入账(发奖/退款),负=出账(提现) |
| `balance_after_cents` | Integer | NOT NULL | 本笔后奖励金余额(= 当时 `coin_account.invite_cash_balance_cents`) |
| `biz_type` | String(32) | NOT NULL | `invite_reward` / `invite_withdraw` / `invite_withdraw_refund` |
| `ref_id` | String(64) | nullable | 见上表:发奖=被邀请人 id;提现/退款=`withdraw_order.out_bill_no` |
| `remark` | String(128) | nullable | 用户可见备注(如「好友比价奖励」「提现到微信零钱(待审核)」) |
| `created_at` | DateTime(tz) | server_default now(), index | |
## 关系 / Join Key
- `user_id``user.id`(多对一,硬 FK)。
- `ref_id` →(withdraw 类)`withdraw_order.out_bill_no`(软关联;该单 `source='invite_cash'`)/(invite_reward)被邀请人 `user.id`
-`invite_relation` 的联动:发奖同事务置 `invite_relation.compare_reward_granted=true`(幂等闸,一个被邀请人只发一次)。
## 索引与约束
- PK `id`;index `user_id``created_at`
## 注意
- **唯一变动入口 `wallet.grant_invite_cash`**:更新 `coin_account.invite_cash_balance_cents` + 写本表,**不 commit**,调用方同事务提交(与 `grant_coins` 同款约定)。
- 提现按 `source` 走不同账本:`coin_cash``cash_transaction`,`invite_cash` → 本表;`withdraw_order` 两种共用一张表靠 `source` 列区分。