您知道如何定义@@method_names
类变量,以便my_macro
和invoke_methods
都可以按预期使用它吗?谢谢!
module MyModule
module ClassMethods
def my_macro method_name, options = { }
define_method method_name do
puts "defining #{method_name} with #{options}"
end
@@method_names << method_name
end
end
def invoke_methods
@@method_names.each { |method_name| send method_name }
end
def self.included includer
includer.extend ClassMethods
end
end
class MyClass
include MyModule
my_macro :method_foo, :bar => 5
my_macro :method_baz, :wee => [3,4]
end
MyClass.new.invoke_methods
答案 0 :(得分:2)
这是一个有效的版本。更改被评论:
module MyModule
module ClassMethods
@@method_names ||= [] #move this up here
def my_macro method_name, options = { }
define_method method_name do
puts "defining #{method_name} with #{options}"
end
@@method_names << method_name
end
#added this (rename as required)
def the_methods
@@method_names
end
end
def invoke_methods
#changed this call
self.class.the_methods.each { |method_name| send method_name }
end
def self.included includer
includer.extend ClassMethods
end
end
class MyClass
include MyModule
my_macro :method_foo, :bar => 5
my_macro :method_baz, :wee => [3,4]
end
MyClass.new.invoke_methods
答案 1 :(得分:1)
module MyModule
module ClassMethods
def my_macro method_name, options = { }
define_method method_name do
puts "defining #{method_name} with #{options}"
end
@method_names ||= []
@method_names << method_name
end
def method_names
@method_names
end
end
def invoke_methods
self.class.method_names.each { |method_name| send method_name }
end
def self.included includer
includer.extend ClassMethods
end
end
class MyClass
include MyModule
my_macro :method_foo, :bar => 5
my_macro :method_baz, :wee => [3,4]
end
MyClass.new.invoke_methods