ruby-on-rails-4 - 为什么 "gem install bundler"不升级我的 bundle 程序？

Question

我正在尝试从 Rails 4.2 升级到 Rails 6。我的 Gemfile 中有这个

fail "run 'gem install bundler' to update your bundler version" unless Bundler::VERSION >= '2.0.0'
source 'https://rubygems.org'
ruby '~> 2.6.7'

gem 'rails', '~> 6.0.0'

当我安装时，我遇到了失败

$ bundle install

[!] There was an error parsing `Gemfile`: run 'gem install bundler' to update your bundler version. Bundler cannot continue.

 #  from /Users/davea/workspace/my-app/Gemfile:1
 #  -------------------------------------------
 >  fail "run 'gem install bundler' to update your bundler version" unless Bundler::VERSION >= '2.0.0'
 #  source 'https://rubygems.org'
 #  -------------------------------------------

所以我想升级bundler，然后运行

$ gem install bundler
Successfully installed bundler-2.2.31
Parsing documentation for bundler-2.2.31
Done installing documentation for bundler after 2 seconds
1 gem installed

但这似乎并没有升级任何东西。我仍然遇到同样的错误

$ bundle install

[!] There was an error parsing `Gemfile`: run 'gem install bundler' to update your bundler version. Bundler cannot continue.

 #  from /Users/davea/workspace/my-app/Gemfile:1
 #  -------------------------------------------
 >  fail "run 'gem install bundler' to update your bundler version" unless Bundler::VERSION >= '2.0.0'
 #  source 'https://rubygems.org'
 #  -------------------------------------------

该版本似乎仍然停留在旧版本

$ bundle -v
Bundler version 1.17.3

$ bin/bundle -v
Bundler version 1.17.3

即使是运行

$ gem update bundler
Updating installed gems
Nothing to update

没有帮助。如何升级我的 bundle 程序？

Answer 1

检查您的 Gemfile 条目版本并确保 Gemfile.lock 在您的版本控制中，然后:

bundle update --bundler