How do I use functions like CONCAT(), etc. in ARel?

Question

Is there a way to have ARel write (sanitized, possibly aliased, etc.) column names into CONCAT() and other SQL functions?

Here\'s how to do

Answer 1

Use NamedFunction:

name = Arel::Attribute.new(Arel::Table.new(:countries), :name)
func = Arel::Nodes::NamedFunction.new 'zomg', [name]
Country.select([name, func]).to_sql