Getting error `No implicits found for parameter fieldMapper: FieldMapper` while using Squeryl version 0.9.14 with Scala version 2.13.1

Question

I followed the following steps:

• Ran sbt new playframework/play-scala-seed.g8 to create new service of Play framework
• Added the line libraryDependencies += "org.squeryl" %% "squeryl" % "0.9.14" to my build.xml file (0.9.14 because that version is compatible with my scala version 2.13.1 as per https://mvnrepository.com/artifact/org.squeryl/squeryl)
• ran sbt run which installed all dependencies. localhost:9000 opens fine without any errors.

• Added a file MyEntity.scala with the following content:

  import org.squeryl.{KeyedEntity, Schema, Table}
  import org.squeryl.annotations.Column
  
  case class MyEntity(
                   @Column("id") id: Int = 0,
                   @Column("name") name: String,
                 ) extends KeyedEntity[Int] {
    def this() = this(0, "")
  }
  
  object MyEntitySchema extends Schema {
    val myEntities: Table[MyEntity] = table[MyEntity]("myEntities")
  }
  

• Added another file MyEntityRetrieval.scala with the following content:

  import org.squeryl.PrimitiveTypeMode._
  import scala.util.Try
  
  class MyEntityRetrieval {
    def get(key: Int) : Option[MyEntity] = inTransaction { Try(Some(myEntities.get(key))).getOrElse(None) }
  }
  

• sbt run. No errors. Opened localhost. Showing error: could not find implicit value for parameter fieldMapper: org.squeryl.internals.FieldMapper.

• Searched in Google. Didn't find anything useful.

How do I fix this? Any kind of help would be highly appreciated. Thanks in advance.

Answer 1

Try adding the following import to the top of MyEntity.scala:

import org.squeryl.PrimitiveTypeMode._