Retrieving class name in a class method?

ruby-talk
1

Hi,

I'd like to use the name of my class in a class method. I've tried
self.class.to_s but that outputs "Class". I've attached my code below

Thanks,
Peter

class Thing

  def self.my_name
    # I don't want to reference instance method my_name
    self.class.to_s
  end

  def self.my_name2
    self.new.my_name
  end

  def my_name
    self.class.to_s
  end

end

# I want these three lines to output "Thing"
puts Thing.my_name #outputs "Class"
puts Thing.my_name2 #outputs "Thing"
puts Thing.new.my_name #outputs "Thing"

2

Just use self.to_s or name in a class method, e.g.

class Thing
  def self.my_name
    self.to_s
  end
  def self.my_name2
    name
  end
end

t = Thing.new
puts Thing.name
puts Thing.my_name
puts Thing.my_name2
__END__
Thing
Thing
Thing

Regards,

Sean

···

On 11/7/05, petermichaux@yahoo.com <petermichaux@yahoo.com> wrote:

I'd like to use the name of my class in a class method. I've tried
self.class.to_s but that outputs "Class". I've attached my code below

3

Hi,

I'd like to use the name of my class in a class method. I've tried
self.class.to_s but that outputs "Class". I've attached my code below

Thanks,
Peter

class Thing

  def self.my_name
    # I don't want to reference instance method my_name
    self.class.to_s
  end

  def self.my_name2
    self.new.my_name
  end

  def my_name
    self.class.to_s
  end

end

# I want these three lines to output "Thing"
puts Thing.my_name #outputs "Class"
puts Thing.my_name2 #outputs "Thing"
puts Thing.new.my_name #outputs "Thing"

That is because the class of a class is class.

$ irb --simple-prompt

12.class

=> Fixnum

12.class.class

=> Class

12.class.class.class

=> Class

class A; p self; end

A
=> nil

class A; p self.class; end

Class
=> nil

class A; def self.a; self; end; end; A.a

=> A

cheers,

Brian

···

On 07/11/05, petermichaux@yahoo.com <petermichaux@yahoo.com> wrote:

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