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rails--rails/activestorage/CHANGELOG.md

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* Previews are created on the same service as the original blob.
*Peter Zhu*
* Remove unused `disposition` and `content_type` query parameters for `DiskService`.
*Peter Zhu*
* Use `DiskController` for both public and private files.
`DiskController` is able to handle multiple services by adding a
`service_name` field in the generated URL in `DiskService`.
*Peter Zhu*
* Variants are tracked in the database to avoid existence checks in the storage service.
*George Claghorn*
* Deprecate `service_url` methods in favour of `url`.
Deprecate `Variant#service_url` and `Preview#service_url` to instead use
`#url` method to be consistent with `Blob`.
*Peter Zhu*
* Permanent URLs for public storage blobs.
Services can be configured in `config/storage.yml` with a new key
`public: true | false` to indicate whether a service holds public
blobs or private blobs. Public services will always return a permanent URL.
Deprecates `Blob#service_url` in favor of `Blob#url`.
*Peter Zhu*
* Make services aware of configuration names.
*Gannon McGibbon*
* The `Content-Type` header is set on image variants when they're uploaded to third-party storage services.
*Kyle Ribordy*
* Allow storage services to be configured per attachment.
```ruby
class User < ActiveRecord::Base
has_one_attached :avatar, service: :s3
end
class Gallery < ActiveRecord::Base
has_many_attached :photos, service: :s3
end
```
*Dmitry Tsepelev*
* You can optionally provide a custom blob key when attaching a new file:
```ruby
user.avatar.attach key: "avatars/#{user.id}.jpg",
io: io, content_type: "image/jpeg", filename: "avatar.jpg"
```
Active Storage will store the blob's data on the configured service at the provided key.
*George Claghorn*
* Replace `Blob.create_after_upload!` with `Blob.create_and_upload!` and deprecate the former.
`create_after_upload!` has been removed since it could lead to data
corruption by uploading to a key on the storage service which happened to
be already taken. Creating the record would then correctly raise a
database uniqueness exception but the stored object would already have
overwritten another. `create_and_upload!` swaps the order of operations
so that the key gets reserved up-front or the uniqueness error gets raised,
before the upload to a key takes place.
*Julik Tarkhanov*
* Set content disposition in direct upload using `filename` and `disposition` parameters to `ActiveStorage::Service#headers_for_direct_upload`.
*Peter Zhu*
* Allow record to be optionally passed to blob finders to make sharding
easier.
*Gannon McGibbon*
* Switch from `azure-storage` gem to `azure-storage-blob` gem for Azure service.
*Peter Zhu*
* Add `config.active_storage.draw_routes` to disable Active Storage routes.
*Gannon McGibbon*
* Image analysis is skipped if ImageMagick returns an error.
`ActiveStorage::Analyzer::ImageAnalyzer#metadata` would previously raise a
`MiniMagick::Error`, which caused persistent `ActiveStorage::AnalyzeJob`
failures. It now logs the error and returns `{}`, resulting in no metadata
being added to the offending image blob.
*George Claghorn*
* Method calls on singular attachments return `nil` when no file is attached.
Previously, assuming the following User model, `user.avatar.filename` would
raise a `Module::DelegationError` if no avatar was attached:
```ruby
class User < ApplicationRecord
has_one_attached :avatar
end
```
They now return `nil`.
*Matthew Tanous*
* The mirror service supports direct uploads.
New files are directly uploaded to the primary service. When a
directly-uploaded file is attached to a record, a background job is enqueued
to copy it to each secondary service.
Configure the queue used to process mirroring jobs by setting
`config.active_storage.queues.mirror`. The default is `:active_storage_mirror`.
*George Claghorn*
* The S3 service now permits uploading files larger than 5 gigabytes.
When uploading a file greater than 100 megabytes in size, the service
transparently switches to [multipart uploads](https://docs.aws.amazon.com/AmazonS3/latest/dev/mpuoverview.html)
using a part size computed from the file's total size and S3's part count limit.
No application changes are necessary to take advantage of this feature. You
can customize the default 100 MB multipart upload threshold in your S3
service's configuration:
```yaml
production:
service: s3
access_key_id: <%= Rails.application.credentials.dig(:aws, :access_key_id) %>
secret_access_key: <%= Rails.application.credentials.dig(:aws, :secret_access_key) %>
region: us-east-1
bucket: my-bucket
upload:
multipart_threshold: <%= 250.megabytes %>
```
*George Claghorn*
Please check [6-0-stable](https://github.com/rails/rails/blob/6-0-stable/activestorage/CHANGELOG.md) for previous changes.