How do you convert a Rails 5 API app to a rails app that can act as both API and app?

Question

I initially created it in rails 5 with the --api tag.

From http://edgeguides.rubyonrails.org/api_app.html,

I removed config.api_only = true

Answer 1

From a directory outside of the api application (such as its parent - cd ..) I would do

rails new comparison_real_app

and then compare the contents of the comparison_real_app with your app and copy over the files that are missing into the api app and change any other files as required.