tuple result in slick 3 DBIO - scala

Question

There is a table with key, values.
There is an another table with auto incremented PK.
Take the value for the key from the first table. If not present insert and
return defaulted value.
Query on other table based on it.
Return filtered result and the value.
So I could try:
def lastLogs(limit: Long = 666): Future[(Long, Seq[VLogEntry])] = {
val q: DBIO[(Long, Seq[VLogEntry])] = {
for {
existing <- kvTable.filter(_.key === "log").result.headOption
conf = existing getOrElse KV(key = "log", value = "0")
last = conf.value.toLong
rds = vLogTable.filter(_.id > last).take(limit).result
_ <- kvTable.insertOrUpdate(conf)
} yield {
(last, rds)
}
}
db.run(q)
}
This gives compile error:
found : HipDAO.this.domain.dbConfig.profile.StreamingProfileAction[Seq[HipDAO.this.domain.VLogTable ...
required: Seq[db.types.Types.VLogEntry]
In Slick 2 I could call list or result on queries in session.
How do I to this in Slick 3.

Answer 1

Going through the iterations of what could be done I came to:
def lastLogs(limit: Long = 666): Future[(Long, Seq[VLogEntry])] = {
val q: DBIO[(Long, Seq[VLogEntry])] = {
for {
existing <- kvTable.filter(_.key === "log").result.headOption
conf = existing getOrElse KV(key = "log", value = "0")
_ <- kvTable.insertOrUpdate(conf)
last = conf.value.toLong
rds <- vLogTable.filter(_.id > last).take(limit).result
} yield {
(last, rds)
}
}
db.run(q)
}
Since difference is only 2 characters this seems like an easy fix.
Internet is devoid from what StreamingProfileAction is, and how to read this messages.
Some insight might come from reading essential slick 3
Eventually, how I saw it, it's a monad, you are supposed to flatMap it.