我在模块中动态定义一个方法,并且我想检查一旦该方法绑定到一个类实例,该方法的主体就是我所期望的。有没有办法输出(作为文本)方法体?
Module controller_mixins.rb
:
module ControllerMixin
instance_eval "def search_by_vendor (*args) \n" \
" @#{self.class.name.sub(/Controller/, '').tableize} = #{self.class.name.sub(/Controller/, '')}.find_all_by_vendor_id(params[:vendor_id]) \n"\
"respond_to do |format| \n" \
" format.html { render :template=>'/#{self.class.name.sub(/Controller/, '').tableize}/index', :layout=>'vendor_info'} \n" \
" format.xml { render :xml => @#{self.class.name.sub(/Controller/, '').tableize} } \n" \
"end \n"\
"end \n"
end
类与以下内容混合:
class VendorOrdersController < ApplicationController
# GET /vendor_orders
# GET /vendor_orders.xml
require 'controller_mixins'
include ControllerMixin
<rest of class>
所以我想看看 mixin 应用于时的实现VendorOrdersController
可能通过script/console
为了方便。
更新:根据 @~/ 我将字符串保存到变量中并puts
做到了。效果非常好。这暴露了我的代码中的一个错误(这就是我首先想查看代码的原因)。下面的代码要好得多,并且按预期工作。
module ControllerMixin
def self.included(mod)
method_body = "def search_by_vendor \n" \
" @#{mod.name.sub(/Controller/, '').tableize} = #{mod.name.sub(/Controller/, '')}.find_all_by_vendor_id(params[:vendor_id]) \n"\
"respond_to do |format| \n" \
" format.html { render :template=>'/#{mod.name.sub(/Controller/, '').tableize}/index', :layout=>'vendor_info'} \n" \
" format.xml { render :xml => @#{mod.name.sub(/Controller/, '').tableize} } \n" \
"end \n"\
"end \n"
puts method_body
mod.class_eval(method_body)
end
end