Module: EventHooks

Defined in:
lib/event_hooks/errors.rb,
lib/event_hooks/version.rb,
lib/event_hooks/event_hooks.rb

Defined Under Namespace

Modules: ClassMethods Classes: DoubleHook

Constant Summary collapse

VERSION = 
"0.1.2"

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(base) ⇒ Object

:nodoc:



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# File 'lib/event_hooks/event_hooks.rb', line 4

def self.included(base) #:nodoc:
	#base.extend EventHooks::ClassMethods
	super
end

Instance Method Details

#hook_before(event, hook) ⇒ Object

prepend the hook to the event event won’t run unless hook returns a true-ish value

Raises:



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# File 'lib/event_hooks/event_hooks.rb', line 11

def hook_before(event, hook)
	raise EventHooks::DoubleHook.new if instance_methods.include?("#{event}_without_before_hook".to_sym)

	alias_method "#{event}_without_before_hook".to_sym, event

	define_method "#{event}_with_before_hook".to_sym do |*args|
		send(hook) && send("#{event}_without_before_hook".to_sym, *args)
	end

	alias_method event, "#{event}_with_before_hook".to_sym
end