ruby-on-rails - 在 Ruby on Rails 中将一个类拆分为多个文件

Question

我正在尝试将大型模型拆分为多个文件以进行逻辑组织。所以我有两个文件:

模型1.rb

class Model1 < ActiveRecord::Base
  before_destroy :destroying
  has_many :things, :dependent=>:destroy

  def method1
    ...
  end
  def method2
    ...
  end

end
require 'model1_section1'

模型1_section1.rb

class Model1
  def method3
    ...
  end
  def self.class_method4
    ...
  end
end

但是当应用程序加载时，并且有一个对 Model1.class_method4 的调用，我得到:

undefined method `class_method4' for #<Class:0x92534d0>

我也试过这个要求:

require File.join(File.dirname(__FILE__), 'model1_section1')

我在这里做错了什么？

Answer 1

我知道我回答这个问题有点晚了，但我刚刚在我的一个应用程序中完成了这个，所以我想我会发布我使用的解决方案。

让我们这是我的模型:

class Model1 < ActiveRecord::Base

  # Stuff you'd like to keep in here
  before_destroy :destroying
  has_many :things, :dependent => :destroy

  def method1
  end
  def method2
  end

  # Stuff you'd like to extract
  before_create :to_creation_stuff
  scope :really_great_ones, #...

  def method3
  end
  def method4
  end
end

您可以将其重构为:

# app/models/model1.rb
require 'app/models/model1_mixins/extra_stuff'
class Model1 < ActiveRecord::Base

  include Model1Mixins::ExtraStuff

  # Stuff you'd like to keep in here
  before_destroy :destroying
  has_many :things, :dependent => :destroy

  def method1
  end
  def method2
  end
end

和:

# app/models/model1_mixins/extra_stuff.rb
module Model1Mixins::ExtraStuff

  extend ActiveSupport::Concern

  included do
    before_create :to_creation_stuff
    scope :really_great_ones, #...
  end

  def method3
  end
  def method4
  end
end

由于 ActiveSupport::Concern 的额外清洁度，它可以完美运行。给你。希望这能解决这个老问题。