2024-12-05 08:48PM
在项目里面运行bundle exec rails console 报错说：
$ bundle exec rails console
Traceback (most recent call last):
10: from bin/rails:4:in `<main>'
9: from bin/rails:4:in `require'
8: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/railties-4.2.10/lib/rails/commands.rb:17:in `<top (required)>'
7: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/railties-4.2.10/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
6: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/railties-4.2.10/lib/rails/commands/commands_tasks.rb:58:in `console'
5: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/railties-4.2.10/lib/rails/commands/commands_tasks.rb:123:in `require_command!'
4: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/railties-4.2.10/lib/rails/commands/commands_tasks.rb:123:in `require'
3: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/railties-4.2.10/lib/rails/commands/console.rb:3:in `<top (required)>'
2: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/railties-4.2.10/lib/rails/commands/console.rb:3:in `require'
1: from /root/.rbenv/versions/2.5.0/lib/ruby/2.5.0/irb/completion.rb:10:in `<top (required)>'
/root/.rbenv/versions/2.5.0/lib/ruby/2.5.0/irb/completion.rb:10:in `require': cannot load such file -- readline (LoadError)
解决方法：
安装readline 开发库，可以使用下面的这个命令
$ sudo apt-get install libreadline-dev
如果使用了这个命令之后，还是报错，需要进行下面的操作
1.重新安装ruby（更倾向使用asdf，但是我这里已经使用了rbenv，所以就不修改了，直接继续使用rbenv）
1.1删除ruby 2.5.0
$ rbenv uninstall 2.5.0
rbenv: remove /root/.rbenv/versions/2.5.0? [yN] y
1.2 安装ruby 2.5.0
# rbenv install 2.5.0
==> Downloading openssl-1.1.1w.tar.gz...
-> curl -q -fL -o openssl-1.1.1w.tar.gz https://dqw8nmjcqpjn7.cloudfront.net/cf3098950cb4d853ad95c0841f1f9c6d3dc102dccfcacd521d93925208b76ac8
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 9661k 100 9661k 0 0 2906k 0 0:00:03 0:00:03 --:--:-- 2905k
==> Installing openssl-1.1.1w...
-> ./config "--prefix=$HOME/.rbenv/versions/2.5.0/openssl" "--openssldir=$HOME/.rbenv/versions/2.5.0/openssl/ssl" --libdir=lib zlib-dynamic no-ssl3 shared
-> make -j 12
-> make install_sw install_ssldirs
==> Installed openssl-1.1.1w to /root/.rbenv/versions/2.5.0
==> Downloading ruby-2.5.0.tar.bz2...
-> curl -q -fL -o ruby-2.5.0.tar.bz2 https://cache.ruby-lang.org/pub/ruby/2.5/ruby-2.5.0.tar.bz2
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 13.3M 100 13.3M 0 0 2641k 0 0:00:05 0:00:05 --:--:-- 3073k
==> Installing ruby-2.5.0...
WARNING: ruby-2.5.0 is past its end of life and is now unsupported.
It no longer receives bug fixes or critical security updates.
-> ./configure "--prefix=$HOME/.rbenv/versions/2.5.0" "--with-openssl-dir=$HOME/.rbenv/versions/2.5.0/openssl" --enable-shared --with-ext=openssl,psych,+
-> make -j 12
-> make install
==> Installed ruby-2.5.0 to /root/.rbenv/versions/2.5.0
注意：这个步骤需要使用代理。
3. 将ruby 2.5.0设置为全局默认版本：
$ rbenv global 2.5.0
4. 查看版本
# ruby -v
ruby 2.5.0p0 (2017-12-25 revision 61468) [x86_64-linux]
5. 运行bundle install，如果提示说：
# bundle install
rbenv: bundle: command not found
The `bundle' command exists in these Ruby versions:
2.6.1
2.6.9
2.7.6
3.1.0
需要安装bundler，我这里安装的版本是 1.17.3
n# gem install bundler -v 1.17.3
Fetching: bundler-1.17.3.gem (100%)
/root/.rbenv/rbenv.d/exec/gem-rehash/rubygems_plugin.rb:6: warning: Insecure world writable dir /mnt/c in PATH, mode 040777
Successfully installed bundler-1.17.3
Parsing documentation for bundler-1.17.3
Installing ri documentation for bundler-1.17.3
Done installing documentation for bundler after 8 seconds
1 gem installed
6. 再运行bundle install
7. 运行bundle exec rails console
# bundle exec rails console
irb(main):001:0>
这样就可以啦。
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