捆绑版本不对？

Question

I'm having trouble creating a new Rails app. I'm using a fresh WSL2 + Ubuntu 18.04 install.

Long story short, I followed the Rails installation procedure from https://gorails.com/setup/windows/10 but when installing bundle using gem install bundler , I end up with 2 bundler versions (2.1.2 and 2.1.4).

If I stick with 2.1.2 webpacker throws an error, so I definitely need to install the newest version. The problem is, when I install 2.1.4 the default version remains 2.1.2, so then I go to cd /.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/specifications/default and remove bundler-2.1.2.gemspec , and then I do a gem install bundler --default to get only v2.1.4 as default:

gem list bundler

*** LOCAL GEMS ***

bundler (default: 2.1.4)

But here is the problem; if I run bundler -v I get:

bundler -v
Bundler version 2.1.2

But the real problem is that, when running rails new , it clearly tries to use 2.1.2 which inevitably fails.

How can I solve this?

Thank you

Answer 1

尝试gem uninstall bundler --version 2.1.2 。

Answer 2

From the app directory run these commands:

gem install bundler
bundle update --bundler
bundle install

This rebuilds the Gemfile.lock with the correct Bundler version.

EDIT: You can create the directory first with rails new my_rails_app , then do cd .. ; rails new my_rails_app cd .. ; rails new my_rails_app after running the above commands.