How to Get the Class Name of a Ruby Object?

Find out how to get an object's class name in Ruby

To get the name of an object's class in Ruby, you can simply use object.class.name, for example, like so:

print [].class.name #=> Array
print "".class.name #=> String
# ...

If your class is a part of a module, then the output for object.class.name would also include the module name. For example:

module Shape
  class Triangle
  end
end

triangle = Shape::Triangle.new

print triangle.class.name #=> Shape::Triangle

To only get the class name, you can remove the module name, for example, like so:

print triangle.class.name.split("::").last #=> Triangle

If you're using Rails, then you may use the demodulize method to achieve the same:

print triangle.class.name.demodulize #=> Triangle

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