How to upgrade from Rails 5.1 to Rails 6.0?

Question

The title sums it up pretty much.

I want to do it via the console using the `bundler. There are several changes on the way rails has handled things such as the frontend. More details over here.

Will I have to rewrite frontend of my app again? Will it be enough to just update the bins and executables manually? Or run $ rails app:update to overwrite old stuff.

Answer 1

Well, it may have been a joke back when you originally posted this question, but Rails 6.0.0 is now a reality! Released Aug. 15, 2019. I would recommend running gem update rails as a first try, but "updating" to Rails 6 was not so easy for my Windows 10 system.

If you used railsinstaller.org to install Rails previously, you will not be able to install Rails 6 with it - or update - at the time of this writing. In order to update to Rails 6 you must be running ruby 2.4.4 or greater, but railsinstaller.org is limited to ruby 2.3 max. Check your version with ruby -v. I used this tutorial to do a fresh install of Ruby 2.6 and Rails 6 while updating gem to 3.0.

I would recommend installing everything fresh so you know where all of your dependencies are and how they work. It will also be much easier to update each individual component this way -- unless you opt to use tools like rvm, which by nature will be easier.

If you're having issues and want a fresh install of the latest Ruby and Rails, read the article I linked :) I only posted this answer because I know railsinstaller.org was recommended to a lot of people (like me) as an easy install method back when it was being maintained.

Answer 2

Just run on your terminal:

gem update rails

That worked for me.

Answer 3

The post you linked is just a joke. Anyway, Rails 6 is under development (since January 30 I believe). Just wait.

https://github.com/rails/rails/blob/master/version.rb

Answer 4

Latest version — Rails 5.1.5 released February 14, 2018 .

Rails 6 is NOT released !! And if it was the case bundler should make it clean