scala - slick2.0 : how to make a Table object?

Question

您好，我刚刚更新并运行了 simple slick Table，想查询它。

import scala.slick.driver.PostgresDriver.simple._
import scala.slick.lifted.TableQuery

class Coffees(tag: Tag) extends Table[(String, Double)](tag, "COFFEES") {
  def name = column[String]("COF_NAME", O.PrimaryKey)
  def price = column[Double]("PRICE")
  def * = (name, price)
}
val coffees = TableQuery[Coffees];

错误是:

[error] C:\testprojects\slickplay\app\model\Coffee.scala:11: expected class or o bject definition
[error] val coffees = TableQuery[Coffees];

TableQuery[Coffees] 不返回对象？？？如何解决。

Answer 1

您不能在类或对象定义之外拥有 val。

尝试

object DatabaseContext {
  val coffees = TableQuery[Coffees]
}