Ruby on Rails中的ActiveAdmin未初始化的常量

在ec2中部署我的应用程序后出现以下错误。

Active Admin在我的本地开发环境中工作正常，但是一旦我使用docker进行部署，它看起来像没有安装gem。

如果我使用bundler show activeadmin检查，则显示Active Admin已安装。

我的gem文件是： 

 gem 'rails', '4.2.2' gem 'mysql2', "~> 0.3.20" # Use SCSS for stylesheets gem 'sass-rails', '>= 3.2' # Use Uglifier as compressor for JavaScript assets gem 'uglifier', '>= 1.3.0' # Use CoffeeScript for .coffee assets and views gem 'coffee-rails', '~> 4.1.0' # See htt gem 'bcrypt', '3.1.7' gem 'bootstrap-sass' gem 'roo', '2.0.0' gem 'iconv' gem 'roo-xls' gem 'omniauth-facebook' gem 'omniauth' gem 'fancybox-rails' gem 'will_paginate' gem 'bootstrap-will_paginate', '0.0.10' # Use jquery as the JavaScript library gem 'jquery-rails' # Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks gem 'turbolinks' # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder gem 'jbuilder', '~> 2.0' # bundle exec rake doc:rails generates the API under doc/api. gem 'sdoc', '~> 0.4.0', group: :doc gem 'unicorn' gem 'yaml_db' gem 'figaro' gem 'execjs' gem 'therubyracer' gem 'devise' gem 'activeadmin', github: 'gregbell/active_admin' gem 'rollbar', '~> 2.8.3' group :development, :test do # Call 'byebug' anywhere in the code to stop execution and get a debugger console gem 'byebug' # Access an IRB console on exception pages or by using <%= console %> in views gem 'web-console', '~> 2.0' # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring gem 'spring' end

我search这个问题，添加require 'activeadmin'到我的active_admin.rb初始值设定项，它不起作用。

我在用着：

  • Ruby v2.2.0
  • Rails v4.2.2

当我在泊坞窗中部署我的错误消息 

 NameError: uninitialized constant ActiveAdmin /app/config/initializers/active_admin.rb:1:in `<top (required)>' /app/config/environment.rb:5:in `<top (required)>' Tasks: TOP => environment (See full trace by running task with --trace)

dockerfile 

 # Dockerfile FROM seapy/rails-nginx-unicorn-pro:v1.0-ruby2.2.0-nginx1.6.0 MAINTAINER seapy(iamseapy@gmail.com) # Add here your preinstall lib(eg imagemagick, mysql lib, pg lib, ssh config) RUN apt-get update RUN apt-get install -qq -y mysql-server mysql-client libmysqlclient-dev #(required) Install Rails App ADD Gemfile /app/Gemfile ADD Gemfile.lock /app/Gemfile.lock RUN bundle install --without development test RUN bundle update ADD . /app #(required) nginx port number EXPOSE 80

当我添加要求'activeadmin' 

 rake aborted! /opt/rubies/ruby-2.2.0/lib/ruby/gems/2.2.0/gems/orm_adapter-0.5.0/lib/orm_adapter/adapters/active_record.rb:81: warning: already initialized constant ActiveRecord::Base::OrmAdapter /opt/rubies/ruby-2.2.0/lib/ruby/gems/2.2.0/gems/orm_adapter-0.5.0/lib/orm_adapter/adapters/active_record.rb:81: warning: previous definition of OrmAdapter was here NoMethodError: undefined method `default_timezone=' for #<Class:0x007ff5e0f92008> /app/config/initializers/active_admin.rb:1:in `<top (required)>' /app/config/environment.rb:5:in `<top (required)>' Tasks: TOP => environment (See full trace by running task with --trace)

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