CODEWITHSUNDEEP
ruby
Chandra Patni
Chandra Patni

Reputation: 17577

Ruby current class

How do I determine the current open class in Ruby?

Upvotes: 31

Views: 23884

Answers (5)

EliadL
EliadL

Reputation: 7068

If you're looking to compare via the class name (string):

class Foo
  def my_class_name_is
    self.class.name
  end
end

Foo.new.my_class_name_is
=> "Foo"

Upvotes: 2

Fangxing
Fangxing

Reputation: 6115

In my case, the name method was overwrote, I find to_s give me this same result

class Foo
 puts self.name
 puts self.to_s
end
#=> Foo
#=> Foo

Upvotes: 0

Alex
Alex

Reputation: 65944

Inside the class itself:

class_name = self.class

On an initialized object named obj:

class_name = obj.class

Upvotes: 32

cristian
cristian

Reputation: 8744

if you have obj = SomeClass.new you get the class with obj.class

Upvotes: 3

Jörg W Mittag
Jörg W Mittag

Reputation: 369438

Inside of a class definition body, self refers to the class itself. Module#name will tell you the name of the class/module, but only if it actually has one. (In Ruby, there is no such thing as a "class name". Classes are simply objects just like any other which get assigned to variables just like any other. It's just that if you happen to assign a class object to a constant, then the name method will return the name of that constant.)

Example:

puts class Foo
  name
end
# Foo

But:

bar = Class.new
bar.name # => nil
BAR = bar
bar.name #=> 'BAR'

Upvotes: 29

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