How to register when you try to make an app using rails yourself I have described how to implement the image as a memo.
First, install ImageMagick from Homebrew.
#Terminal % brew install imagemagick
Next, write it on the gemfile. The version may be different.
gem 'mini_magick' gem 'image_processing', '~> 1.2'
Bundle installation on the terminal.
% bundle install
On the terminal, do the following:
% rails active_storage:install
I thought that Qiita, which I always refer to, would be useful to someone. When I actually write it, it's kind of hard to write just a little.
I hope I can improve it little by little.