composing single insert statement in slick 3 - slick

Question

This is the case class representing the entire row:
case class CustomerRow(id: Long, name: String, 20 other fields ...)
I have a shape case class that only 'exposes' a subset of columns and it is used when user creates/updates a customer:
case class CustomerForm(name: String, subset of all fields ...)
I can use CustomerForm for updates. However I can't use it for inserts. There are some columns not in CustomerForm that are required (not null) and can only be provided by the server. What I do now is that I create CustomerRow from CustomerForm:
def form2row(form: CustomerForm, id: Long, serverOnlyValue: Long, etc...) = CustomerRow(
id = id,
serverOnlyColumn = serverOnlyValue,
name = form.name.
// and so on for 20 more tedious lines of code
)
and use it for insert.
Is there a way to compose insert in slick so I can remove that tedious form2row function?
Something like:
(customers.map(formShape) += form) andAlsoOnTheSameRow .map(c => (c.id, c.serverOnlyColumn)) += (id, someValue)
?

Answer 1

Yes, You can do this like:
case class Person(name: String, email: String, address: String, id: Option[Int] = None)
case class NameAndAddress(name: String,address: String)
class PersonTable(tag: Tag) extends Table[Person](tag, "person") {
val id = column[Int]("id", O.PrimaryKey, O.AutoInc)
val name = column[String]("name")
val email = column[String]("email")
val address = column[String]("address")
//for partial insert
def nameWithAddress = (name, address)<>(NameAndAddress.tupled, NameAndAddress.unapply)
def * = (name, email, address, id.?) <> (Person.tupled, Person.unapply)
}
val personTableQuery = TableQuery[PersonTable]
// insert partial fields
personTableQuery.map(_.nameWithAddress) += NameAndAddress("abc", "xyz")
Make sure, You are aware of nullable fields they should be in form of Option[T] where T is filed type.In my example case, email should be Option[String] instead of String.