class Class
Public instance methods
descendants()
Returns an array with all classes that are < than its receiver.
class C; end
C.descendants # => []
class B < C; end
C.descendants # => [B]
class A < B; end
C.descendants # => [B, A]
class D < C; end
C.descendants # => [B, A, D]
Source code GitHub
# File activesupport/lib/active_support/core_ext/class/subclasses.rb, line 19
def descendants
subclasses.concat(subclasses.flat_map(&:descendants))
end