Here’s a short tip for all programmers out there: do not push by force to gem repo. Why?

If you maintain a gem (or a fork specifically for your app), do not push by force to the master branch, or actually any other branch that can be referenced in the app’s Gemfile. It may cause you some trouble.

If your Shortgem is referenced via git, you can have a problem when someone (possibly you) pushes by force. When you push by force, your Gemfile.lock needs to be updated to reflect the commit change. Otherwise you will get an error: fatal: Could not parse object 'some_commit_id'.
To solve it, you need to re-generate the Gemfile.lock.
The easiest way to do it:

  1. Comment the problematic gem in the Gemfile
  2. Run bundle install
  3. Uncomment the gem from the first step
  4. Run bundle install once again.

Always ensure that shared branches (such as master or develop) are merge-only and set as protected on Github or Gitlab. Do you have any questions about this issue? Or any other IT-related problems? Contact iRonin for assistance!

Today’s Developer’ Notes were shared by Łukasz, Ruby on Rails developer. Stay tuned for more tips and tricks in the near future!