foo.rb

class Foo < ActiveRecord::Base
  scope :bar, lambda{|a| where(a: a) }
  scope :baz, lambda{|b| where(b: b) }
end

# Foo.bar(a).baz(b) works fine.

class Foo < ActiveRecord::Base
  class << self
    def bar(a)
      where(a: a)
    end

    def baz(b)
      where(b: b)
    end
  end
end

# What does Foo.bar(a).baz(b) do here?  seems like it wouldn't work.