Class: ActiveSupport::Callbacks::CallbackChain

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
activesupport/lib/active_support/callbacks.rb

Overview

:nodoc:

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Enumerable

#as_json, #compact_blank, #exclude?, #excluding, #in_order_of, #including, #index_by, #index_with, #many?, #maximum, #minimum, #pick, #pluck, #sole, #sum

Constructor Details

#initialize(name, config) ⇒ CallbackChain

Returns a new instance of CallbackChain.


608
609
610
611
612
613
614
615
616
617
# File 'activesupport/lib/active_support/callbacks.rb', line 608

def initialize(name, config)
  @name = name
  @config = {
    scope: [:kind],
    terminator: default_terminator
  }.merge!(config)
  @chain = []
  @callbacks = nil
  @mutex = Mutex.new
end

Instance Attribute Details

#configObject (readonly)

Returns the value of attribute config.


606
607
608
# File 'activesupport/lib/active_support/callbacks.rb', line 606

def config
  @config
end

#nameObject (readonly)

Returns the value of attribute name.


606
607
608
# File 'activesupport/lib/active_support/callbacks.rb', line 606

def name
  @name
end

Instance Method Details

#append(*callbacks) ⇒ Object


654
655
656
# File 'activesupport/lib/active_support/callbacks.rb', line 654

def append(*callbacks)
  callbacks.each { |c| append_one(c) }
end

#clearObject


633
634
635
636
637
# File 'activesupport/lib/active_support/callbacks.rb', line 633

def clear
  @callbacks = nil
  @chain.clear
  self
end

#compileObject


645
646
647
648
649
650
651
652
# File 'activesupport/lib/active_support/callbacks.rb', line 645

def compile
  @callbacks || @mutex.synchronize do
    final_sequence = CallbackSequence.new
    @callbacks ||= @chain.reverse.inject(final_sequence) do |callback_sequence, callback|
      callback.apply callback_sequence
    end
  end
end

#delete(o) ⇒ Object


628
629
630
631
# File 'activesupport/lib/active_support/callbacks.rb', line 628

def delete(o)
  @callbacks = nil
  @chain.delete(o)
end

#each(&block) ⇒ Object


619
# File 'activesupport/lib/active_support/callbacks.rb', line 619

def each(&block); @chain.each(&block); end

#empty?Boolean

Returns:

  • (Boolean)

621
# File 'activesupport/lib/active_support/callbacks.rb', line 621

def empty?;       @chain.empty?; end

#index(o) ⇒ Object


620
# File 'activesupport/lib/active_support/callbacks.rb', line 620

def index(o);     @chain.index(o); end

#initialize_copy(other) ⇒ Object


639
640
641
642
643
# File 'activesupport/lib/active_support/callbacks.rb', line 639

def initialize_copy(other)
  @callbacks = nil
  @chain     = other.chain.dup
  @mutex     = Mutex.new
end

#insert(index, o) ⇒ Object


623
624
625
626
# File 'activesupport/lib/active_support/callbacks.rb', line 623

def insert(index, o)
  @callbacks = nil
  @chain.insert(index, o)
end

#prepend(*callbacks) ⇒ Object


658
659
660
# File 'activesupport/lib/active_support/callbacks.rb', line 658

def prepend(*callbacks)
  callbacks.each { |c| prepend_one(c) }
end