Calling method in parent class from subclass methods in Ruby

I've used super to initialize parent class but I cannot see any way of calling parent class from subclass methods.

I know PHP and other languages do have this feature but cannot find a good way to do this in Ruby.

What would one do in this situation?

Solution 1:

If the method is the same name, i.e. you're overriding a method you can simply use super. Otherwise you can use an alias_method or a binding.

class Parent
  def method
  end
end

class Child < Parent
  alias_method :parent_method, :method
  def method
    super
  end

  def other_method
    parent_method
    #OR
    Parent.instance_method(:method).bind(self).call
  end
end

Solution 2:

The super keyword calls a method of the same name in the super class:

class Foo
  def foo
    "#{self.class}#foo"
  end
end

class Bar < Foo
  def foo
    "Super says: #{super}"
  end
end

Foo.new.foo # => "Foo#foo"
Bar.new.foo # => "Super says: Bar#foo"

Solution 3:

The super keyword in Ruby actually calls a method of the same name in the parent class. (source)

class Foo
  def foo
    # Do something
  end
end

class Bar < Foo
  def foo
    super # Calls foo() method in parent class
  end
end