使用 save 更新已有数据为什么需要传 created_at ？ 做成在 更新时忽略 created_at 会不会更好一些

[hhstu]

No description provided.

[hhstu]

尝试使用以下方法：

CreatedAt time.Time      `json:"created_at" gorm:"<-:create"`

这会导致用 save 更新后返回的数据里 created_at 为空

"ID": 1,
"created_at": "0001-01-01T00:00:00Z",
...

[github-actions]

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