Rails activestorage 使用 cloudflare R2 对象存储

根据这篇文章一步一步来，基本上没啥问题。

核心几个配置在下面。

Use bin/rails credentials:edit to set Cloudflare credentials:

cloudflare:
  account_id: ACCOUNT_ID
  access_key_id: YOUR_KEY
  secret_access_key: YOUR_SECRET
  bucket: BUCKET_NAME

Now update config/storage.yml:

cloudflare:
    service: S3
    endpoint: https://<%= Rails.application.credentials.dig(:cloudflare, :account_id) %>.r2.cloudflarestorage.com
    access_key_id: <%= Rails.application.credentials.dig(:cloudflare, :access_key_id) %>
    secret_access_key: <%= Rails.application.credentials.dig(:cloudflare, :secret_access_key) %>
    region: auto
    bucket: <%= Rails.application.credentials.dig(:cloudflare, :bucket) %>

And update ActiveStorage service in config/environments/development.rb:

config.active_storage.service = :cloudflare