Ruby: Calling class method from instance

Question

In Ruby, how do you call a class method from one of that class\'s instances? Say I have

class Truck
  def self.default_make
    # Class method.
    \"mac\"
  end         


        

Answer 1

Using self.class.blah is NOT the same as using ClassName.blah when it comes to inheritance.

class Truck
  def self.default_make
    "mac"
  end

  def make1
    self.class.default_make
  end

  def make2
    Truck.default_make
  end
end


class BigTruck < Truck
  def self.default_make
    "bigmac"
  end
end

ruby-1.9.3-p0 :021 > b=BigTruck.new
 => # 
ruby-1.9.3-p0 :022 > b.make1
 => "bigmac" 
ruby-1.9.3-p0 :023 > b.make2
 => "mac"