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class Pirate < ActiveRecord::Base
belongs_to :parrot
has_and_belongs_to_many :parrots
has_and_belongs_to_many :parrots_with_method_callbacks, :class_name => "Parrot",
:before_add => :log_before_add,
:after_add => :log_after_add,
:before_remove => :log_before_remove,
:after_remove => :log_after_remove
has_and_belongs_to_many :parrots_with_proc_callbacks, :class_name => "Parrot",
:before_add => proc {|p,pa| p.ship_log << "before_adding_proc_parrot_#{pa.id || '<new>'}"},
:after_add => proc {|p,pa| p.ship_log << "after_adding_proc_parrot_#{pa.id || '<new>'}"},
:before_remove => proc {|p,pa| p.ship_log << "before_removing_proc_parrot_#{pa.id}"},
:after_remove => proc {|p,pa| p.ship_log << "after_removing_proc_parrot_#{pa.id}"}
has_many :treasures, :as => :looter
has_many :treasure_estimates, :through => :treasures, :source => :price_estimates
# These both have :autosave enabled because accepts_nested_attributes_for is used on them.
has_one :ship
has_many :birds
has_many :birds_with_method_callbacks, :class_name => "Bird",
:before_add => :log_before_add,
:after_add => :log_after_add,
:before_remove => :log_before_remove,
:after_remove => :log_after_remove
has_many :birds_with_proc_callbacks, :class_name => "Bird",
:before_add => proc {|p,b| p.ship_log << "before_adding_proc_bird_#{b.id || '<new>'}"},
:after_add => proc {|p,b| p.ship_log << "after_adding_proc_bird_#{b.id || '<new>'}"},
:before_remove => proc {|p,b| p.ship_log << "before_removing_proc_bird_#{b.id}"},
:after_remove => proc {|p,b| p.ship_log << "after_removing_proc_bird_#{b.id}"}
accepts_nested_attributes_for :parrots, :birds, :allow_destroy => true, :reject_if => proc { |attributes| attributes.empty? }
accepts_nested_attributes_for :ship, :allow_destroy => true, :reject_if => proc { |attributes| attributes.empty? }
accepts_nested_attributes_for :parrots_with_method_callbacks, :parrots_with_proc_callbacks,
:birds_with_method_callbacks, :birds_with_proc_callbacks, :allow_destroy => true
validates_presence_of :catchphrase
def ship_log
@ship_log ||= []
end
private
def log_before_add(record)
log(record, "before_adding_method")
end
def log_after_add(record)
log(record, "after_adding_method")
end
def log_before_remove(record)
log(record, "before_removing_method")
end
def log_after_remove(record)
log(record, "after_removing_method")
end
def log(record, callback)
ship_log << "#{callback}_#{record.class.name.downcase}_#{record.id || '<new>'}"
end
end
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