Project running on Heroku upgrade from Rails 3.2 to 7.0

Job ID: 33072172

Budget: €1,000 – €1,500 EUR

Ruby on Rails project, built using MVC model.
There's < 100 lines of code in application.rb and some initializers
About a total of 500 lines of codes in the controllers, split over 19 files.
About a total of 70 lines of code in helpers
About a total of 1200 lines of code in models (pretty straightforward - nothing fancy)
There are about 60 files in views, mostly sub-templates with few lines

Made to run on Heroku.

The objective: upgrading from Rails 3.2 to 7.0 (preferably - if dependencies allow it). Testing and delivering, including some assistance to deploy on Heroku when ready
Related categories: Ruby on Rails Heroku