油滑2.0：如何将提升的查询结果转换为案例类？

Question

为了实现ReSTfull API堆栈，我需要将从DB提取的数据转换为JSON格式。我认为最好的方法是从DB中提取数据，然后使用Json.toJson（）在定义隐式序列化程序（写入）后作为参数传递给case类，然后将该行设置为JSON。

这里是我的情况下阶层和同伴对象：

package deals.db.interf.slick2 

import scala.slick.driver.MySQLDriver.simple._ 
import play.api.libs.json.Json 

case class PartnerInfo(
    id: Int, 
    name: String, 
    site: String, 
    largeLogo: String, 
    smallLogo: String, 
    publicationSite: String 
) 

object PartnerInfo { 

    def toCaseClass(??) = { // what type are the arguments to be passed? 
    PartnerInfo(fx(??)) // how to transform the input types (slick) to Scala types? 
    } 

    // Notice I'm using slick 2.0.0 RC1 
    class PartnerInfoTable(tag: Tag) extends Table[(Int, String, String, String, String, String)](tag, "PARTNER"){ 
     def id = column[Int]("id") 
     def name = column[String]("name") 
     def site = column[String]("site") 
     def largeLogo = column[String]("large_logo") 
     def smallLogo = column[String]("small_logo") 
     def publicationSite = column[String]("publication_site") 

     def * = (id, name, site, largeLogo, smallLogo, publicationSite) 
    } 


    val partnerInfos = TableQuery[PartnerInfoTable] 


    def qPartnerInfosForPuglisher(publicationSite: String) = { 
    for ( 
     pi <- partnerInfos if (pi.publicationSite == publicationSite) 
    ) yield toCaseClass(_) // Pass all the table columns to toCaseClass() 
    } 


    implicit val partnerInfoWrites = Json.writes[PartnerInfo] 

} 

我能不明白的是如何实现toCaseClass（）方法以改造从油滑的2列类型Scala的类型 - 注意函数FX （）在toCaseClass（）的主体中只是为了强调这一点。

我想知道是否可以从Slick列类型中获得Scala类型，因为它明确地在表定义中传递，但我找不到如何获取它。

有什么想法？

Answer 1

我相信这里的简单的方法是在表模式映射PartnerInfo：

class PartnerInfoTable(tag: Tag) extends Table[PartnerInfo](tag, "PARTNER"){ 
     def id = column[Int]("id") 
     def name = column[String]("name") 
     def site = column[String]("site") 
     def largeLogo = column[String]("large_logo") 
     def smallLogo = column[String]("small_logo") 
     def publicationSite = column[String]("publication_site") 

     def * = (id, name, site, largeLogo, smallLogo, publicationSite) <> (PartnerInfo.tupled, PartnerInfo.unapply) 
    } 

val partnerInfos = TableQuery[PartnerInfoTable] 


    def qPartnerInfosForPuglisher(publicationSite: String) = { 
    for ( 
     pi <- partnerInfos if (pi.publicationSite == publicationSite) 
    ) yield pi 
    } 

否则PartnerInfo.tupled应该做的伎俩：

def toCaseClass(pi:(Int, String, String, String, String, String)) = PartnerInfo.tupled(pi)