Class: Object

Inherits:
BasicObject
Defined in:
lib/active_record/support/dependencies.rb,
lib/active_record/support/core_ext/object_and_class.rb

Overview

:nodoc:

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.const_missing(class_id) ⇒ Object

Use const_missing to autoload associations so we don’t have to require_association when using single-table inheritance.



54
55
56
57
58
59
60
61
 
# File 'lib/active_record/support/dependencies.rb', line 54

def const_missing(class_id)
  begin
    require_or_load(class_id.to_s.demodulize.underscore)
    if Object.const_defined?(class_id) then return Object.const_get(class_id) else raise LoadError end
  rescue LoadError
    raise NameError, "uninitialized constant #{class_id}"
  end
end

Instance Method Details

#remove_subclasses_of(superclass) ⇒ Object 



2
3
4
 
# File 'lib/active_record/support/core_ext/object_and_class.rb', line 2

def remove_subclasses_of(superclass)
  subclasses_of(superclass).each { |subclass| Object.send(:remove_const, subclass) rescue nil }
end

#subclasses_of(superclass) ⇒ Object 



6
7
8
9
10
11
12
13
 
# File 'lib/active_record/support/core_ext/object_and_class.rb', line 6

def subclasses_of(superclass)
  subclasses = []
  ObjectSpace.each_object(Class) do |k|
    next if !k.ancestors.include?(superclass) || superclass == k || k.to_s.include?("::") || subclasses.include?(k.to_s)
    subclasses << k.to_s
  end
  subclasses
end