Skip JSON format in rails generate scaffold
Just clone the file
https://github.com/rails/rails/blob/v5.2.2/railties/lib/rails/generators/rails/scaffold_controller/scaffold_controller_generator.rb
to your
lib/rails/generators/rails/scaffold_controller/templates/controller.rb
path in your application and customize what you want. Also, you can write your own generators for scaffolding ( http://guides.rubyonrails.org/generators.html ).
Comment out gem jbuilder
in your Gemfile
and respond_to
blocks won't be generated.