init: 后端框架脚手架 (Go + Gin + GORM + MySQL)
- 项目目录结构:backend/ deploy/ schema/ migrations/ - 数据库 Schema:所有建表 SQL,含 hotel_id 多租户隔离 - Go 后端:config、model、handler、service、middleware、router - 认证:账号密码登录 + JWT(Access + Refresh Token) - 许可证:HMAC-SHA256 激活码生成 + 设备绑定验证 - 业务模块:商品、仓库、往来单位、入库、出库、库存、盘点 - 库存事务:入库/出库审核时原子更新库存 + 流水记录 - 数据导入:Excel/CSV 批量导入商品、往来单位 - Docker Compose:本地 MySQL + Adminer Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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package model
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import (
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"database/sql/driver"
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"encoding/json"
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"fmt"
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"time"
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)
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// JSON 类型,用于 custom_fields
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type JSON map[string]interface{}
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func (j JSON) Value() (driver.Value, error) {
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if j == nil {
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return nil, nil
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}
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b, err := json.Marshal(j)
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return string(b), err
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}
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func (j *JSON) Scan(value interface{}) error {
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if value == nil {
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*j = nil
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return nil
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}
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var bytes []byte
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switch v := value.(type) {
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case string:
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bytes = []byte(v)
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case []byte:
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bytes = v
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default:
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return fmt.Errorf("cannot scan type %T into JSON", value)
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}
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return json.Unmarshal(bytes, j)
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}
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// Base 公共字段
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type Base struct {
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ID uint64 `gorm:"primaryKey;autoIncrement" json:"id"`
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CreatedAt time.Time `json:"created_at"`
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UpdatedAt time.Time `json:"updated_at"`
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DeletedAt *time.Time `gorm:"index" json:"-"`
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}
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// TenantBase 含租户隔离的公共字段
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type TenantBase struct {
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Base
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HotelID uint64 `gorm:"not null;index" json:"hotel_id"`
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}
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