feat: 实现注册优惠码功能
- 支持创建/编辑/删除优惠码,设置赠送金额和使用限制 - 注册页面实时验证优惠码并显示赠送金额 - 支持 URL 参数自动填充 (?promo=CODE) - 添加优惠码验证接口速率限制 - 使用数据库行锁防止并发超限 - 新增后台优惠码管理页面,支持复制注册链接
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@@ -18,6 +18,12 @@ type AccountGroup func(*sql.Selector)
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// Group is the predicate function for group builders.
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type Group func(*sql.Selector)
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// PromoCode is the predicate function for promocode builders.
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type PromoCode func(*sql.Selector)
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// PromoCodeUsage is the predicate function for promocodeusage builders.
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type PromoCodeUsage func(*sql.Selector)
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// Proxy is the predicate function for proxy builders.
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type Proxy func(*sql.Selector)
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