Creating dynamic class with name space from string in Ruby

dynamic_class.rb

module Util

  # Create Job class from ENV string
  def self.create_job_class(name, queue_var)
    klass = Class.new(ActiveJob::Base) do
      queue_as ENV.fetch(queue_var, 'default')
    end

    create_dynamic_class(name, klass)
  end

  def self.create_dynamic_class(class_with_namescope, klass)
    module_name, class_name = class_with_namescope.split('::')

    if class_name.present? # class is inside a module
      unless module_constant = Object.const_get(module_name) rescue nil
        module_constant = Object.const_set(module_name, Module.new {})
      end
      module_constant.const_set(class_name, klass)
    else
      Object.const_set(module_name, klass) # module_name is now class_name
    end

  rescue Exception => e
    raise "Please choose right job class #{class_with_namescope}"
  end

  # Get constant from string with namespaces
  def self.find_constant(constant_with_namescope)
    constant_with_namescope.split('::').inject(Module) { |path, findable| path.const_get(findable) }
  end
end