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我正在使用 slick 3.1、Play framework 2.5 和 scala 2.11。我的应用程序有“用户”表，参考列“addressId”指的是“地址”表的“id”列。我无法在这两个表中插入数据。这是此的代码

这是用户窗体：

val registerForm: Form[RegisterForm] = Form {
mapping(
  "id" -> optional(number),
  "firstname" -> nonEmptyText.verifying("letters only", name => name.isEmpty || name.matches("[A-z\\s]+")),
  "lastname" -> nonEmptyText.verifying("letters only", name => name.isEmpty || name.matches("[A-z\\s]+")),
  "email" -> text.verifying(nonEmpty),
  "password" -> text.verifying(nonEmpty),
  "address" -> mapping(
      "id" -> optional(number),
      "city" -> nonEmptyText.verifying("letters only", name => name.isEmpty || name.matches("[A-z\\s]+")),
      "state" -> text,
      "country" -> text,
      "pin" -> number
      )(AddressForm.apply)(AddressForm.unapply)
  )(RegisterForm.apply)(RegisterForm.unapply)
 }

这是两个模型类：

case class Address(id: Option[Int], city: String, state: String, country: String, pin: Int)
case class User(id: Option[Int], firstname: String, lastname: String, email: String, password: String, addressId: Option[Int])

这是两个类都映射到具有表查询的相应数据库表：

private class UserDB(tag: Tag) extends Table[User](tag, "user") {

def id = column[Option[Int]]("id", O.PrimaryKey, O.AutoInc)

def firstname = column[String]("firstname")

def lastname = column[String]("lastname")

def email = column[String]("email")

def password = column[String]("password")

def addressId = column[Option[Int]]("address_id")

override def * = (id, firstname, lastname, email, password, addressId) <> ((User.apply _).tupled, User.unapply)

def address_fk= foreignKey("fk_user_address", addressId, addressTable)(_.id)

 }

private class AddressDB(tag: Tag) extends Table[Address](tag, "address") {

def id = column[Option[Int]]("id", O.PrimaryKey, O.AutoInc)

def city = column[String]("city")

def state = column[String]("state")

def country = column[String]("country")

def pin = column[Int]("pin")

override def * = (id, city, state, country, pin) <> ((Address.apply _).tupled, Address.unapply)

}


private val userTable = TableQuery[UserDB]

private val addressTable = TableQuery[AddressDB]

请告诉我如何使用 slick 通过一个查询将数据插入两个相关表。

非常感谢您提前。

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1 回答 1

2

您应该在单个事务中使用 id 返回插入地址和插入用户表，例如：

val query = for {
  adressId <- addressTable returning addressTable.map(_.id) += Address(....)
  userTable += User(..., Some(adressId), ....)
} yield ()

db.run(query.transactionally)

编辑：上面的查询不返回任何内容，如果您需要创建用户，请使用：

val query = for {
  adressId <- addressTable returning addressTable.map(_.id) += Address(....)
  user <- userTable returning userTable += User(..., Some(adressId), ....)
} yield user

db.run(query.transactionally)
于 2016-04-26T10:23:55.780 回答