[ActiveStorage for All] Active Storage-backed Valkyrie storage adapter

.dassie/config/storage.yml

@@ -5,3 +5,30 @@ test:
 local:
   service: Disk
   root: <%= Rails.root.join("storage") %>
+
+# Use rails credentials:edit to set the AWS secrets (as aws:access_key_id|secret_access_key)
+# amazon:
+#   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: your_own_bucket
+
+# Remember not to checkin your GCS keyfile to a repository
+# google:
+#   service: GCS
+#   project: your_project
+#   credentials: <%= Rails.root.join("path/to/gcs.keyfile") %>
+#   bucket: your_own_bucket
+
+# Use rails credentials:edit to set the Azure Storage secret (as azure_storage:storage_access_key)
+# microsoft:
+#   service: AzureStorage
+#   storage_account_name: your_account_name
+#   storage_access_key: <%= Rails.application.credentials.dig(:azure_storage, :storage_access_key) %>
+#   container: your_container_name
+
+# mirror:
+#   service: Mirror
+#   primary: local
+#   mirrors: [ amazon, google, microsoft ]

.dassie/db/migrate/20260716000001_create_active_storage_tables.active_storage.rb

@@ -0,0 +1,59 @@
+# frozen_string_literal: true
+# This migration comes from active_storage (originally 20170806125915)
+class CreateActiveStorageTables < ActiveRecord::Migration[7.0]
+  def change
+    # Use Active Record's configured type for primary and foreign keys
+    primary_key_type, foreign_key_type = primary_and_foreign_key_types
+
+    create_table :active_storage_blobs, id: primary_key_type do |t|
+      t.string   :key,          null: false
+      t.string   :filename,     null: false
+      t.string   :content_type
+      t.text     :metadata
+      t.string   :service_name, null: false
+      t.bigint   :byte_size,    null: false
+      t.string   :checksum
+
+      if connection.supports_datetime_with_precision?
+        t.datetime :created_at, precision: 6, null: false
+      else
+        t.datetime :created_at, null: false
+      end
+
+      t.index [:key], unique: true
+    end
+
+    create_table :active_storage_attachments, id: primary_key_type do |t|
+      t.string     :name,     null: false
+      t.references :record,   null: false, polymorphic: true, index: false, type: foreign_key_type
+      t.references :blob,     null: false, type: foreign_key_type
+
+      if connection.supports_datetime_with_precision?
+        t.datetime :created_at, precision: 6, null: false
+      else
+        t.datetime :created_at, null: false
+      end
+
+      t.index [:record_type, :record_id, :name, :blob_id], name: :index_active_storage_attachments_uniqueness, unique: true
+      t.foreign_key :active_storage_blobs, column: :blob_id
+    end
+
+    create_table :active_storage_variant_records, id: primary_key_type do |t|
+      t.belongs_to :blob, null: false, index: false, type: foreign_key_type
+      t.string :variation_digest, null: false
+
+      t.index [:blob_id, :variation_digest], name: :index_active_storage_variant_records_uniqueness, unique: true
+      t.foreign_key :active_storage_blobs, column: :blob_id
+    end
+  end
+
+  private
+
+  def primary_and_foreign_key_types
+    config = Rails.configuration.generators
+    setting = config.options[config.orm][:primary_key_type]
+    primary_key_type = setting || :primary_key
+    foreign_key_type = setting || :bigint
+    [primary_key_type, foreign_key_type]
+  end
+end

.dassie/db/schema.rb

@@ -10,12 +10,40 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2026_05_21_003627) do
+ActiveRecord::Schema.define(version: 2026_07_16_000001) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
   enable_extension "uuid-ossp"
 
+  create_table "active_storage_attachments", force: :cascade do |t|
+    t.string "name", null: false
+    t.string "record_type", null: false
+    t.bigint "record_id", null: false
+    t.bigint "blob_id", null: false
+    t.datetime "created_at", null: false
+    t.index ["blob_id"], name: "index_active_storage_attachments_on_blob_id"
+    t.index ["record_type", "record_id", "name", "blob_id"], name: "index_active_storage_attachments_uniqueness", unique: true
+  end
+
+  create_table "active_storage_blobs", force: :cascade do |t|
+    t.string "key", null: false
+    t.string "filename", null: false
+    t.string "content_type"
+    t.text "metadata"
+    t.string "service_name", null: false
+    t.bigint "byte_size", null: false
+    t.string "checksum"
+    t.datetime "created_at", null: false
+    t.index ["key"], name: "index_active_storage_blobs_on_key", unique: true
+  end
+
+  create_table "active_storage_variant_records", force: :cascade do |t|
+    t.bigint "blob_id", null: false
+    t.string "variation_digest", null: false
+    t.index ["blob_id", "variation_digest"], name: "index_active_storage_variant_records_uniqueness", unique: true
+  end
+
   create_table "bookmarks", id: :serial, force: :cascade do |t|
     t.integer "user_id", null: false
     t.string "user_type"
@@ -753,6 +781,8 @@
     t.index ["work_id"], name: "index_work_view_stats_on_work_id"
   end
 
+  add_foreign_key "active_storage_attachments", "active_storage_blobs", column: "blob_id"
+  add_foreign_key "active_storage_variant_records", "active_storage_blobs", column: "blob_id"
   add_foreign_key "bulkrax_exporter_runs", "bulkrax_exporters", column: "exporter_id"
   add_foreign_key "bulkrax_importer_runs", "bulkrax_importers", column: "importer_id"
   add_foreign_key "bulkrax_pending_relationships", "bulkrax_importer_runs", column: "importer_run_id"

.koppie/config/initializers/1_valkyrie.rb

@@ -78,6 +78,16 @@
   :versioned_disk_storage
 )
 
+# Versioned storage through Rails Active Storage: the service configured in
+# config/storage.yml (+ config.active_storage.service) decides where file
+# bytes live, so switching this app's repository files from local disk to S3
+# is an Active Storage configuration change only. Select it with
+# VALKYRIE_STORAGE_ADAPTER=active_storage_storage.
+Valkyrie::StorageAdapter.register(
+  Hyrax::Storage::ActiveStorage.new,
+  :active_storage_storage
+)
+
 Valkyrie.config.storage_adapter  = ENV.fetch('VALKYRIE_STORAGE_ADAPTER') { :versioned_disk_storage }.to_sym
 
 Valkyrie.config.indexing_adapter = :solr_index

.koppie/db/migrate/20260716000001_create_active_storage_tables.active_storage.rb

@@ -0,0 +1,59 @@
+# frozen_string_literal: true
+# This migration comes from active_storage (originally 20170806125915)
+class CreateActiveStorageTables < ActiveRecord::Migration[7.0]
+  def change
+    # Use Active Record's configured type for primary and foreign keys
+    primary_key_type, foreign_key_type = primary_and_foreign_key_types
+
+    create_table :active_storage_blobs, id: primary_key_type do |t|
+      t.string   :key,          null: false
+      t.string   :filename,     null: false
+      t.string   :content_type
+      t.text     :metadata
+      t.string   :service_name, null: false
+      t.bigint   :byte_size,    null: false
+      t.string   :checksum
+
+      if connection.supports_datetime_with_precision?
+        t.datetime :created_at, precision: 6, null: false
+      else
+        t.datetime :created_at, null: false
+      end
+
+      t.index [:key], unique: true
+    end
+
+    create_table :active_storage_attachments, id: primary_key_type do |t|
+      t.string     :name,     null: false
+      t.references :record,   null: false, polymorphic: true, index: false, type: foreign_key_type
+      t.references :blob,     null: false, type: foreign_key_type
+
+      if connection.supports_datetime_with_precision?
+        t.datetime :created_at, precision: 6, null: false
+      else
+        t.datetime :created_at, null: false
+      end
+
+      t.index [:record_type, :record_id, :name, :blob_id], name: :index_active_storage_attachments_uniqueness, unique: true
+      t.foreign_key :active_storage_blobs, column: :blob_id
+    end
+
+    create_table :active_storage_variant_records, id: primary_key_type do |t|
+      t.belongs_to :blob, null: false, index: false, type: foreign_key_type
+      t.string :variation_digest, null: false
+
+      t.index [:blob_id, :variation_digest], name: :index_active_storage_variant_records_uniqueness, unique: true
+      t.foreign_key :active_storage_blobs, column: :blob_id
+    end
+  end
+
+  private
+
+  def primary_and_foreign_key_types
+    config = Rails.configuration.generators
+    setting = config.options[config.orm][:primary_key_type]
+    primary_key_type = setting || :primary_key
+    foreign_key_type = setting || :bigint
+    [primary_key_type, foreign_key_type]
+  end
+end

.koppie/db/schema.rb

@@ -10,11 +10,39 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.2].define(version: 2026_05_21_003627) do
+ActiveRecord::Schema[7.2].define(version: 2026_07_16_000001) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
   enable_extension "uuid-ossp"
 
+  create_table "active_storage_attachments", force: :cascade do |t|
+    t.string "name", null: false
+    t.string "record_type", null: false
+    t.bigint "record_id", null: false
+    t.bigint "blob_id", null: false
+    t.datetime "created_at", null: false
+    t.index ["blob_id"], name: "index_active_storage_attachments_on_blob_id"
+    t.index ["record_type", "record_id", "name", "blob_id"], name: "index_active_storage_attachments_uniqueness", unique: true
+  end
+
+  create_table "active_storage_blobs", force: :cascade do |t|
+    t.string "key", null: false
+    t.string "filename", null: false
+    t.string "content_type"
+    t.text "metadata"
+    t.string "service_name", null: false
+    t.bigint "byte_size", null: false
+    t.string "checksum"
+    t.datetime "created_at", null: false
+    t.index ["key"], name: "index_active_storage_blobs_on_key", unique: true
+  end
+
+  create_table "active_storage_variant_records", force: :cascade do |t|
+    t.bigint "blob_id", null: false
+    t.string "variation_digest", null: false
+    t.index ["blob_id", "variation_digest"], name: "index_active_storage_variant_records_uniqueness", unique: true
+  end
+
   create_table "bookmarks", id: :serial, force: :cascade do |t|
     t.integer "user_id", null: false
     t.string "user_type"
@@ -744,6 +772,8 @@
     t.index ["work_id"], name: "index_work_view_stats_on_work_id"
   end
 
+  add_foreign_key "active_storage_attachments", "active_storage_blobs", column: "blob_id"
+  add_foreign_key "active_storage_variant_records", "active_storage_blobs", column: "blob_id"
   add_foreign_key "bulkrax_exporter_runs", "bulkrax_exporters", column: "exporter_id"
   add_foreign_key "bulkrax_importer_runs", "bulkrax_importers", column: "importer_id"
   add_foreign_key "bulkrax_pending_relationships", "bulkrax_importer_runs", column: "importer_run_id"