affirm.rb

#where :foo is a column of some table
ActiveRecord::Base.where{
    :foo.is == "bar"
    :foo.is > 1
    :foo.is < 2
    :foo.is >= 3
    :foo.is <= 4
    :foo.contains "bar"
    :foo.between 10..20
    :foo.from 10, 20
    :foo.in 1,2,3,4,5
}