如何在Sinatra应用程序中使用Ruby gem中的模块

Question

我正在处理一个未发布的gem，它在Rails中工作正常。它有一个需要包含在ActiveRecord：：基类中的模块。

我的Sinatra应用程序如下所示：

# app.rb
require 'rubygems'
require 'sinatra'
require 'sinatra/activerecord'

set :database, "sqlite3:project-name.sqlite3"

get '/' do
  @users = User.all
  erb :index
end

class User < ActiveRecord::Base
end

我的gem文件如下所示：

source 'https://rubygems.org'

gem 'activerecord'
gem 'sinatra-activerecord'
gem 'sqlite3'
gem 'rake'
gem "my_module", path: "../my_module"

我的Gemfile.lock看起来像这样：

PATH
  remote: ../my_module
  specs:
    my_module (1.49.0)
      activerecord (>= 4.2)

GEM
  remote: https://rubygems.org/
  specs:
    activemodel (6.0.2.1)
      activesupport (= 6.0.2.1)
    activerecord (6.0.2.1)
      activemodel (= 6.0.2.1)
      activesupport (= 6.0.2.1)
    activesupport (6.0.2.1)
      concurrent-ruby (~> 1.0, >= 1.0.2)
      i18n (>= 0.7, < 2)
      minitest (~> 5.1)
      tzinfo (~> 1.1)
      zeitwerk (~> 2.2)
    concurrent-ruby (1.1.5)
    i18n (1.7.0)
      concurrent-ruby (~> 1.0)
    minitest (5.13.0)
    mustermann (1.0.3)
    rack (2.0.8)
    rack-protection (2.0.7)
      rack
    rake (13.0.1)
    sinatra (2.0.7)
      mustermann (~> 1.0)
      rack (~> 2.0)
      rack-protection (= 2.0.7)
      tilt (~> 2.0)
    sinatra-activerecord (2.0.14)
      activerecord (>= 3.2)
      sinatra (>= 1.0)
    sqlite3 (1.4.2)
    thread_safe (0.3.6)
    tilt (2.0.10)
    tzinfo (1.2.5)
      thread_safe (~> 0.1)
    zeitwerk (2.2.2)

PLATFORMS
  ruby

DEPENDENCIES
  activerecord
  rake
  my_module!
  sinatra-activerecord
  sqlite3

BUNDLED WITH
   2.0.2

如果我手动添加模块，它可以很好地工作：

# app.rb
require 'rubygems'
require 'sinatra'
require 'sinatra/activerecord'

set :database, "sqlite3:project-name.sqlite3"

get '/' do
  @users = User.all
  erb :index
end

module MyModule
  extend ActiveSupport::Concern
  class_methods do
    #something here
  end
end

class User < ActiveRecord::Base
  include MyModule
end

我希望能够做到：

# app.rb
require 'rubygems'
require 'sinatra'
require 'sinatra/activerecord'
require 'my_module'

set :database, "sqlite3:project-name.sqlite3"

get '/' do
  @users = User.all
  erb :index
end

class User < ActiveRecord::Base
  include MyModule
end

我得到了错误

cannot load such file -- my_module (LoadError) 

当我使用require语句或

uninitialized constant User::MyModule (NameError)

如果我移除require。

Answer 1

如果我使用

bundle exec ruby app.rb

而不是

ruby app.rb