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slick 3自動生成 - 默認值(timestamp)列,如何定義Rep [Date]功能

[英]slick 3 auto-generated - default value (timestamp) column, how to define a Rep[Date] function

我有以下postgres列定義:

record_time TIMESTAMP WITHOUT TIME ZONE DEFAULT now()

我如何將其映射到光滑? 請考慮我希望映射now()函數生成的默認值

即:

def recordTimestamp: Rep[Date] = column[Date]("record_time", ...???...)

是否有任何額外的定義去...???...目前位於哪里?

編輯(1)

我不想用

column[Date]("record_time", O.Default(new Date(System.currentTimeMillis()))) // or some such applicative generation of the date column value

我發現一個博客解釋說你可以使用以下內容:

// slick 3
import slick.profile.SqlProfile.ColumnOption.SqlType
def created = column[Timestamp]("created", SqlType("timestamp not null default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP"))

// slick 3
def createdAt = column[Timestamp]("createdAt", O.NotNull, O.DBType("timestamp default now()"))

請參閱: http//queirozf.com/entries/scala-slick-dealing-with-datetime-timestamp-attributes

我想這還不支持。 這是問題: https//github.com/slick/slick/issues/214

光滑3示例

import slick.driver.PostgresDriver.api._
import slick.lifted._
import java.sql.{Date, Timestamp}

/** A representation of the message decorated for Slick persistence
  * created_date should always be null on insert operations.
  * It is set at the database level to ensure time syncronicity
  * Id is the Twitter snowflake id. All columns NotNull unless declared as Option
  * */
class RawMessages(tag: Tag) extends Table[(String, Option[String], Timestamp)](tag, Some("rti"), "RawMessages") {
  def id = column[String]("id", O.PrimaryKey)
  def MessageString = column[Option[String]]("MessageString")
  def CreatedDate = column[Timestamp]("CreatedDate", O.SqlType("timestamp default now()"))
  def * = (id, MessageString, CreatedDate)
}

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