如何在 Heroku 上安装 Redmine (3.x.x)¶

参考以下文章

• https://stackoverflow.com/questions/39261996/heroku-and-rails-gem-load-error-with-postgres-however-it-is-specified-in-gemfi
• https://medium.com/mozaix-llc/how-to-deploy-redmine-to-heroku-41684d888b05

首先，git 克隆至 Redmine 稳定源代码

git clone https://github.com/redmine/redmine.git -b 3.4-stable

并移动至 Redmine 项目目录

cd redmine

编辑 .gitignroe 文件，并移除以下行

Gemfile.lock
Gemfile.local
public/plugin_assets 
config/initializers/session_store.rb 
config/initializers/secret_token.rb 
config/configuration.yml 
config/email.yml

编辑 Gemfile，移除或注释此块

database_file = File.join(File.dirname(__FILE__), "config/database.yml")
 if File.exist?(database_file)
   database_config = YAML::load(ERB.new(IO.read(database_file)).result)
   adapters = database_config.values.map {|c| c['adapter']}.compact.uniq
   if adapters.any?
     adapters.each do |adapter|
       case adapter
       when 'mysql2'
         gem "mysql2", "~> 0.4.6", :platforms => [:mri, :mingw, :x64_mingw]
       when /postgresql/
         gem "pg", "~> 0.18.1", :platforms => [:mri, :mingw, :x64_mingw]
       when /sqlite3/
         gem "sqlite3", (RUBY_VERSION < "2.0" && RUBY_PLATFORM =~ /mingw/ ? "1.3.12" : "~>1.3.12"),
                        :platforms => [:mri, :mingw, :x64_mingw]
       when /sqlserver/
         gem "tiny_tds", (RUBY_VERSION >= "2.0" ? "~> 1.0.5" : "~> 0.7.0"), :platforms => [:mri, :mingw, :x64_mingw]
         gem "activerecord-sqlserver-adapter", :platforms => [:mri, :mingw, :x64_mingw]
       else
         warn("Unknown database adapter `#{adapter}` found in config/database.yml, use Gemfile.local to load your own database gems")
       end
     end
   else
    warn("No adapter found in config/database.yml, please configure it first")
   end
 else
  warn("Please configure your config/database.yml first")
 end

并添加此块

group :production do
  gem 'pg', '~> 0.20'
end

安装 Gem，捆绑安装

bundle install

使用此命令获取密钥令牌

rake generate_secret_token 

在 config/environment.rb 中编辑为“exit 1”（移除或注释）

 exit 1

在 config/application.rb 中添加到此行

config.assets.initialize_on_precompile = false

创建 Heroku 应用程序

heroku apps:create -a APP_NAME

添加 Postgreaql 外接程序

heroku addons:create heroku-postgresql 

链接至远程（heroku）

heroku git:remote -a APP_NAME

使用以下命令部署至 Heroku

git add -A
git commit -m “Redmine for Heroku deployment”
git push heroku 3.4-stable:master

最后，迁移并加载默认数据

heroku run rake db:migrate
heroku run rake redmine:load_default_data