Anorm结果为Int

Question

I have a code like this:

def getUserId(email: String) = DB.withConnection { implicit con =>
  SQL("select userId from signUp where email = {email}").
    on('email -> email).as(SqlParser.str("access_token").singleOpt)
}

It gives String as a result.

How can I get the result as Int .

Answer 1

If you have a look at the Anorm documentation , you can see how to use the row parsers.

For Int , either use SqlParser.get[Int] , or its convenient alias SqlParser.int .

There you are looking for a row with a single column, .scalar is better.

val res: Option[Int] = 
  SQL"SELECT userId FROM signUp WHERE email = $email".
    as(SqlParser.scalar[Int].singleOpt)

Note the Anorm interpolation SQL"..." (without the parenthesis).

Answer 2

i think its should work

def getUserId(email: String) = { 
    val userId = DB.withConnection { 
       implicit a => SQL( """ select userId from signUp where email = {email} """).on('email -> email).as(SqlParser.str("access_token").singleOpt) 
    } 
    userId.toInt 
}