Gorm 格式化时间这样处理可行不可行 - V2EX
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yekern
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Gorm 格式化时间这样处理可行不可行

  •  
  •   yekern
    yekern 2024-07-22 16:26:35 +08:00 1594 次点击
    这是一个创建于 496 天前的主题,其中的信息可能已经有所发展或是发生改变。
    时间结构体
    type UseDateTime struct { CreatedAt *time.Time `json:"-"` CreatedAtStr string `json:"created_at" gorm:"-"` UpdatedAt *time.Time `json:"-"` UpdatedAtStr string `json:"updated_at" gorm:"-"` } 

    结构体多添加两个字段 CreatedAtStrUpdatedAtStr用 Tag 来控制不参与存储

    使用 Gorm 自带的 Hook AfterFind

    func (u *UseDateTime) AfterFind(tx *gorm.DB) (err error) { if u.CreatedAt != nil { u.CreatedAtStr = u.CreatedAt.Format("2006-01-02 15:04:05") } if u.UpdatedAt != nil { u.UpdatedAtStr = u.UpdatedAt.Format("2006-01-02 15:04:05") } return } 

    最终输出

    { "code": 200, "data": [ { "id": 1, "username": "admin", "created_at": "2019-10-29 00:28:05", "updated_at": "2024-06-13 14:09:15" } ] } 
    CEBBCAT
        1
    CEBBCAT  
       2024-07-22 16:32:12 +08:00
    楼主可以同时考虑这几种方案:
    1. 定义响应专用的结构体。如果嫌麻烦,可以找找看代码生成器
    2. 返回 unix 时间戳
    CEBBCAT
        2
    CEBBCAT  
       2024-07-22 16:33:19 +08:00
    另外 V2EX 似乎不让用别人照片当头像(以 /settings/avatar 为准)
    yekern
        3
    yekern  
    OP
       2024-07-22 16:38:26 +08:00
    @CEBBCAT 感谢提醒!
    highFreqSurfer
        4
    highFreqSurfer  
       2024-07-22 17:55:28 +08:00
    给 time.Time 定义个别名, 实现 MarshalJSON() ([]byte, error) Scan(value interface{}) error Value() (driver.Value, error) 三个函数, 然后用这个别名替换掉你 model 里的*time.Time 就好了
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