Rails 3 SQL query select with joins

Question

I have a problem with select fonction and joins.

here is my current query.

@search = Building.joins(\'INNER JOIN \"floors\" ON \"floors\".\"building_id\"         


        

Answer 1

You can do it like this... Hope its useful

@search = Building.select("buildings.name, floors.number, spaces.number").joins("INNER JOIN floors ON floors.building_id = buildings.id INNER JOIN spaces ON spaces.floor_id = floors.id")

Answer 2

Look at your code:

Building.select('buildings.name, floors.number, spaces.number)...

You don't select the building id, so Rails is a bit lost when comes the time to retrieve it.