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								package base
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								import (
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									"context"
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									"gorm.io/gorm"
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								)
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								type CtxKey string
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								const (
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									DbKey CtxKey = "db"
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								)
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											2024-12-08 13:04:23 +08:00
										 
									 
								 
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								// NewCtxWithDb 将事务db放置context中,若已存在,则直接返回ctx
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								func NewCtxWithDb(ctx context.Context, db *gorm.DB) context.Context {
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									if tx := GetDbFromCtx(ctx); tx != nil {
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										return ctx
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									}
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									return context.WithValue(ctx, DbKey, db)
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								}
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								// GetDbFromCtx 获取ctx中的事务db
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								func GetDbFromCtx(ctx context.Context) *gorm.DB {
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									if txdb, ok := ctx.Value(DbKey).(*gorm.DB); ok {
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										return txdb
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									}
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									return nil
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								}
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