module ClassCallbacks
Public Class Methods
included(base)
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# File lib/class-callbacks/module.rb, line 2 def self.included base def base.define_callback name ivar = "@class_callbacks_#{name}" unless is_a?(Class) || is_a?(Module) raise ArgumentError, 'define_callback Can only be defined in a class or a module' end define_singleton_method(name) do |*args, &block| ref = caller[0].split(':in ').first self.instance_variable_set(ivar, {}) unless instance_variable_defined?(ivar) self.instance_variable_get(ivar)[ref] = block || args end end end
Public Instance Methods
run_callback(name, *args)
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# File lib/class-callbacks/module.rb, line 21 def run_callback name, *args ivar = "@class_callbacks_#{name}" list = is_a?(Class) || is_a?(Module) ? ancestors : self.class.ancestors list = list.slice 0, list.index(Object) if list.index(Object) list.reverse.each do |klass| if klass.instance_variable_defined?(ivar) mlist = klass.instance_variable_get(ivar).values mlist.each do |m| if m.is_a?(Array) for el in m send el, *args end else instance_exec *args, &m end end end end end