[Rails] I can post S3 images in my local environment, but I can't switch to S3 on Heroku.

phenomenon

I was able to successfully store images in S3 in the local environment! !! However, even if I merge it on Heroku side, the image is stored on Heroku's DB for some reason. .. .. There is no error. .. I wonder why. .. ..

Cause

It's a matter of course when I think about it now, but ... The cause was that ActiveStorage was not set in the production (Heroku) file .

***** Leave the procedure so that you do not make the same mistake *****

Settings in the local environment (* Settings on the aws side are omitted)

① Introduce the Gemfile required to use S3

Gemfile.

gem "aws-sdk-s3", require: false

② After adding, enter the application under development in the terminal and execute "bundle install"

Terminal.

% bundle install

③ Update development.rb and storage.yml files

config/environments/development.rb

#Change settings to save on S3
# config.active_storage.service = :local
config.active_storage.service = :amazon

config/storage.yml

#Added S3 settings
amazon:
  service: S3
  region : ap-southeast-1  #Check and describe the region on the aws side
  bucket : furimabucket    #Check the bucket name on the aws side and describe it
  access_key_id: <%= ENV['AWS_ACCESS_KEY_ID'] %> 
  secret_access_key:  <%= ENV['AWS_SECRET_ACCESS_KEY'] %>

④ Addition of environment variables

Terminal.

% vim ~/.zshrc

Enter edit mode with "i" and register two variables

Terminal.

export AWS_ACCESS_KEY_ID="Access key ID value"
export AWS_SECRET_ACCESS_KEY="Secret access key value"

After editing, exit with [ESC] →: wq Then, reload the environment variable configuration file

Terminal.

% source ~/.zshrc

Now you can post S3 images in your local environment !!!!!!: relaxed:
After that, it will be reflected in the production environment (Heroku). : writing_hand:

Reflection in the production environment (Heroku)

① First of all, don't forget to update production.rb : point_up: ** storage.yml ** has not changed.

config/environments/production.rb

#Set to be saved in S3 even in the production environment
config.active_storage.service = :amazon

② Log in to Heroku at the terminal

Terminal.

% heroku login --interactive

③ Set environment variables even in the production environment If you want to check the environment variables, "% heroku config"

Terminal.

% heroku config:set AWS_ACCESS_KEY_ID="Access key ID value"
% heroku config:set AWS_SECRET_ACCESS_KEY="Secret access key value"

④ Then commit and complete

Terminal.

% git add .
% git commit -m "Storage change (S3)"
% git push heroku master

: sparkles :: sparkles :: sparkles :: sparkles: Thank you for your hard work. : sparkles :: sparkles :: sparkles :: sparkles: