How to retrieve attachment url with Rails Active Storage with S3

Question

rails version 5.2

I have a scenario that I need to access the public url of Rails Active Storage with Amazon s3 to make a zip file with Sidekiq bac

Answer 1

Use ActiveStorage::Blob#service_url. For example, assuming a Post model with a single attached header_image:

@post.header_image.service_url

---

Update: Rails 6.1

Since Rails 6.1 ActiveStorage::Blob#service_url is deprecated in favor of ActiveStorage::Blob#url.

So, now

@post.header_image.url

is the way to go.

Sources:

• Link to the corresponding PR.
• Link to source.