Change new accounts to use new ActivityPub numeric ID scheme (#36365)

app/models/account.rb

@@ -52,7 +52,7 @@
 #  requested_review_at           :datetime
 #  indexable                     :boolean          default(FALSE), not null
 #  attribution_domains           :string           default([]), is an Array
-#  id_scheme                     :integer          default("username_ap_id")
+#  id_scheme                     :integer          default("numeric_ap_id")
 #
 
 class Account < ApplicationRecord
@@ -446,7 +446,6 @@ class Account < ApplicationRecord
 
   before_validation :prepare_contents, if: :local?
   before_create :generate_keys
-  before_create :set_id_scheme
   before_destroy :clean_feed_manager
 
   def ensure_keys!
@@ -471,12 +470,6 @@ class Account < ApplicationRecord
     self.public_key  = keypair.public_key.to_pem
   end
 
-  def set_id_scheme
-    return unless local? && Mastodon::Feature.numeric_ap_ids_enabled?
-
-    self.id_scheme = :numeric_ap_id
-  end
-
   def normalize_domain
     return if local?
 

db/migrate/20251007142305_change_defaults_for_account_id_scheme.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class ChangeDefaultsForAccountIdScheme < ActiveRecord::Migration[8.0]
+  def change
+    change_column_default :accounts, :id_scheme, from: 0, to: 1
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[8.0].define(version: 2025_10_07_100813) do
+ActiveRecord::Schema[8.0].define(version: 2025_10_07_142305) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "pg_catalog.plpgsql"
 
@@ -199,7 +199,7 @@ ActiveRecord::Schema[8.0].define(version: 2025_10_07_100813) do
     t.boolean "indexable", default: false, null: false
     t.string "attribution_domains", default: [], array: true
     t.string "following_url", default: "", null: false
-    t.integer "id_scheme", default: 0
+    t.integer "id_scheme", default: 1
     t.index "(((setweight(to_tsvector('simple'::regconfig, (display_name)::text), 'A'::\"char\") || setweight(to_tsvector('simple'::regconfig, (username)::text), 'B'::\"char\")) || setweight(to_tsvector('simple'::regconfig, (COALESCE(domain, ''::character varying))::text), 'C'::\"char\")))", name: "search_index", using: :gin
     t.index "lower((username)::text), COALESCE(lower((domain)::text), ''::text)", name: "index_accounts_on_username_and_domain_lower", unique: true
     t.index ["domain", "id"], name: "index_accounts_on_domain_and_id"

spec/controllers/concerns/account_controller_concern_spec.rb

@@ -58,7 +58,7 @@ RSpec.describe AccountControllerConcern do
       expect(response)
         .to have_http_status(200)
         .and have_http_link_header(webfinger_url(resource: account.to_webfinger_s)).for(rel: 'lrdd', type: 'application/jrd+json')
-        .and have_http_link_header(account_url(account, protocol: :https)).for(rel: 'alternate', type: 'application/activity+json')
+        .and have_http_link_header(ActivityPub::TagManager.instance.uri_for(account)).for(rel: 'alternate', type: 'application/activity+json')
       expect(response.body)
         .to include(account.username)
     end

spec/controllers/follower_accounts_controller_spec.rb

@@ -49,8 +49,8 @@ RSpec.describe FollowerAccountsController do
           expect(response.parsed_body)
             .to include(
               orderedItems: contain_exactly(
-                include(follow_from_bob.account.username),
+                ActivityPub::TagManager.instance.uri_for(follow_from_bob.account),
-                include(follow_from_chris.account.username)
+                ActivityPub::TagManager.instance.uri_for(follow_from_chris.account)
               ),
               totalItems: eq(2),
               partOf: be_present

spec/controllers/following_accounts_controller_spec.rb

@@ -49,8 +49,8 @@ RSpec.describe FollowingAccountsController do
           expect(response.parsed_body)
             .to include(
               orderedItems: contain_exactly(
-                include(follow_of_bob.target_account.username),
+                ActivityPub::TagManager.instance.uri_for(follow_of_bob.target_account),
-                include(follow_of_chris.target_account.username)
+                ActivityPub::TagManager.instance.uri_for(follow_of_chris.target_account)
               ),
               totalItems: eq(2),
               partOf: be_present

spec/lib/activitypub/tag_manager_spec.rb

@@ -23,7 +23,7 @@ RSpec.describe ActivityPub::TagManager do
 
   describe '#url_for' do
     context 'with a local account' do
-      let(:account) { Fabricate(:account) }
+      let(:account) { Fabricate(:account, id_scheme: :username_ap_id) }
 
       it 'returns a string starting with web domain and with the expected path' do
         expect(subject.url_for(account))
@@ -49,7 +49,8 @@ RSpec.describe ActivityPub::TagManager do
     end
 
     context 'with a local status' do
-      let(:status) { Fabricate(:status) }
+      let(:account) { Fabricate(:account, id_scheme: :username_ap_id) }
+      let(:status) { Fabricate(:status, account: account) }
 
       it 'returns a string starting with web domain and with the expected path' do
         expect(subject.url_for(status))
@@ -58,7 +59,6 @@ RSpec.describe ActivityPub::TagManager do
 
       context 'when using a numeric ID based scheme' do
         let(:account) { Fabricate(:account, id_scheme: :numeric_ap_id) }
-        let(:status) { Fabricate(:status, account: account) }
 
         it 'returns a string starting with web domain and with the expected path' do
           expect(subject.url_for(status))
@@ -86,7 +86,7 @@ RSpec.describe ActivityPub::TagManager do
     end
 
     context 'with a local account' do
-      let(:account) { Fabricate(:account) }
+      let(:account) { Fabricate(:account, id_scheme: :username_ap_id) }
 
       it 'returns a string starting with web domain and with the expected path' do
         expect(subject.uri_for(account))
@@ -112,7 +112,8 @@ RSpec.describe ActivityPub::TagManager do
     end
 
     context 'with a local status' do
-      let(:status) { Fabricate(:status) }
+      let(:account) { Fabricate(:account, id_scheme: :username_ap_id) }
+      let(:status) { Fabricate(:status, account: account) }
 
       it 'returns a string starting with web domain and with the expected path' do
         expect(subject.uri_for(status))
@@ -121,7 +122,6 @@ RSpec.describe ActivityPub::TagManager do
 
       context 'when using a numeric ID based scheme' do
         let(:account) { Fabricate(:account, id_scheme: :numeric_ap_id) }
-        let(:status) { Fabricate(:status, account: account) }
 
         it 'returns a string starting with web domain and with the expected path' do
           expect(subject.uri_for(status))
@@ -140,7 +140,8 @@ RSpec.describe ActivityPub::TagManager do
     end
 
     context 'with a local conversation' do
-      let(:status) { Fabricate(:status) }
+      let(:account) { Fabricate(:account, id_scheme: :username_ap_id) }
+      let(:status) { Fabricate(:status, account: account) }
 
       it 'returns a string starting with web domain and with the expected path' do
         expect(subject.uri_for(status.conversation))
@@ -149,7 +150,6 @@ RSpec.describe ActivityPub::TagManager do
 
       context 'when using a numeric ID based scheme' do
         let(:account) { Fabricate(:account, id_scheme: :numeric_ap_id) }
-        let(:status) { Fabricate(:status, account: account) }
 
         it 'returns a string starting with web domain and with the expected path' do
           expect(subject.uri_for(status.conversation))
@@ -181,7 +181,7 @@ RSpec.describe ActivityPub::TagManager do
     end
 
     context 'with a local account' do
-      let(:account) { Fabricate(:account) }
+      let(:account) { Fabricate(:account, id_scheme: :username_ap_id) }
 
       it 'returns a string starting with web domain and with the expected path' do
         expect(subject.key_uri_for(account))
@@ -218,7 +218,9 @@ RSpec.describe ActivityPub::TagManager do
 
   describe '#approval_uri_for' do
     context 'with a valid local approval' do
-      let(:quote) { Fabricate(:quote, state: :accepted) }
+      let(:quoted_account) { Fabricate(:account, id_scheme: :username_ap_id) }
+      let(:quoted_status) { Fabricate(:status, account: quoted_account) }
+      let(:quote) { Fabricate(:quote, state: :accepted, quoted_status: quoted_status) }
 
       it 'returns a string with the web domain and expected path' do
         expect(subject.approval_uri_for(quote))
@@ -227,8 +229,6 @@ RSpec.describe ActivityPub::TagManager do
 
       context 'when using a numeric ID based scheme' do
         let(:quoted_account) { Fabricate(:account, id_scheme: :numeric_ap_id) }
-        let(:quoted_status) { Fabricate(:status, account: quoted_account) }
-        let(:quote) { Fabricate(:quote, state: :accepted, quoted_status: quoted_status) }
 
         it 'returns a string with the web domain and expected path' do
           expect(subject.approval_uri_for(quote))
@@ -238,7 +238,9 @@ RSpec.describe ActivityPub::TagManager do
     end
 
     context 'with an unapproved local quote' do
-      let(:quote) { Fabricate(:quote, state: :rejected) }
+      let(:quoted_account) { Fabricate(:account, id_scheme: :username_ap_id) }
+      let(:quoted_status) { Fabricate(:status, account: quoted_account) }
+      let(:quote) { Fabricate(:quote, state: :rejected, quoted_status: quoted_status) }
 
       it 'returns nil' do
         expect(subject.approval_uri_for(quote))
@@ -247,8 +249,6 @@ RSpec.describe ActivityPub::TagManager do
 
       context 'when using a numeric ID based scheme' do
         let(:quoted_account) { Fabricate(:account, id_scheme: :numeric_ap_id) }
-        let(:quoted_status) { Fabricate(:status, account: quoted_account) }
-        let(:quote) { Fabricate(:quote, state: :rejected, quoted_status: quoted_status) }
 
         it 'returns nil' do
           expect(subject.approval_uri_for(quote))
@@ -260,7 +260,7 @@ RSpec.describe ActivityPub::TagManager do
     context 'with a valid remote approval' do
       let(:quoted_account) { Fabricate(:account, domain: 'example.com') }
       let(:quoted_status) { Fabricate(:status, account: quoted_account) }
-      let(:quote) { Fabricate(:quote, state: :accepted, quoted_status: quoted_status, approval_uri: 'https://example.com/approvals/1') }
+      let(:quote) { Fabricate(:quote, status: Fabricate(:status), state: :accepted, quoted_status: quoted_status, approval_uri: 'https://example.com/approvals/1') }
 
       it 'returns the expected URI' do
         expect(subject.approval_uri_for(quote)).to eq quote.approval_uri
@@ -268,7 +268,9 @@ RSpec.describe ActivityPub::TagManager do
     end
 
     context 'with an unapproved local quote but check_approval override' do
-      let(:quote) { Fabricate(:quote, state: :rejected) }
+      let(:quoted_account) { Fabricate(:account, id_scheme: :username_ap_id) }
+      let(:quoted_status) { Fabricate(:status, account: quoted_account) }
+      let(:quote) { Fabricate(:quote, state: :rejected, quoted_status: quoted_status) }
 
       it 'returns a string with the web domain and expected path' do
         expect(subject.approval_uri_for(quote, check_approval: false))
@@ -277,8 +279,6 @@ RSpec.describe ActivityPub::TagManager do
 
       context 'when using a numeric ID based scheme' do
         let(:quoted_account) { Fabricate(:account, id_scheme: :numeric_ap_id) }
-        let(:quoted_status) { Fabricate(:status, account: quoted_account) }
-        let(:quote) { Fabricate(:quote, state: :rejected, quoted_status: quoted_status) }
 
         it 'returns a string with the web domain and expected path' do
           expect(subject.approval_uri_for(quote, check_approval: false))
@@ -290,7 +290,8 @@ RSpec.describe ActivityPub::TagManager do
 
   describe '#replies_uri_for' do
     context 'with a local status' do
-      let(:status) { Fabricate(:status) }
+      let(:account) { Fabricate(:account, id_scheme: :username_ap_id) }
+      let(:status) { Fabricate(:status, account: account) }
 
       it 'returns a string starting with web domain and with the expected path' do
         expect(subject.replies_uri_for(status))
@@ -299,7 +300,6 @@ RSpec.describe ActivityPub::TagManager do
 
       context 'when using a numeric ID based scheme' do
         let(:account) { Fabricate(:account, id_scheme: :numeric_ap_id) }
-        let(:status) { Fabricate(:status, account: account) }
 
         it 'returns a string starting with web domain and with the expected path' do
           expect(subject.replies_uri_for(status))
@@ -311,7 +311,8 @@ RSpec.describe ActivityPub::TagManager do
 
   describe '#likes_uri_for' do
     context 'with a local status' do
-      let(:status) { Fabricate(:status) }
+      let(:account) { Fabricate(:account, id_scheme: :username_ap_id) }
+      let(:status) { Fabricate(:status, account: account) }
 
       it 'returns a string starting with web domain and with the expected path' do
         expect(subject.likes_uri_for(status))
@@ -320,7 +321,6 @@ RSpec.describe ActivityPub::TagManager do
 
       context 'when using a numeric ID based scheme' do
         let(:account) { Fabricate(:account, id_scheme: :numeric_ap_id) }
-        let(:status) { Fabricate(:status, account: account) }
 
         it 'returns a string starting with web domain and with the expected path' do
           expect(subject.likes_uri_for(status))
@@ -332,7 +332,8 @@ RSpec.describe ActivityPub::TagManager do
 
   describe '#shares_uri_for' do
     context 'with a local status' do
-      let(:status) { Fabricate(:status) }
+      let(:account) { Fabricate(:account, id_scheme: :username_ap_id) }
+      let(:status) { Fabricate(:status, account: account) }
 
       it 'returns a string starting with web domain and with the expected path' do
         expect(subject.shares_uri_for(status))
@@ -341,7 +342,6 @@ RSpec.describe ActivityPub::TagManager do
 
       context 'when using a numeric ID based scheme' do
         let(:account) { Fabricate(:account, id_scheme: :numeric_ap_id) }
-        let(:status) { Fabricate(:status, account: account) }
 
         it 'returns a string starting with web domain and with the expected path' do
           expect(subject.shares_uri_for(status))
@@ -353,7 +353,7 @@ RSpec.describe ActivityPub::TagManager do
 
   describe '#following_uri_for' do
     context 'with a local account' do
-      let(:account) { Fabricate(:account) }
+      let(:account) { Fabricate(:account, id_scheme: :username_ap_id) }
 
       it 'returns a string starting with web domain and with the expected path' do
         expect(subject.following_uri_for(account))
@@ -373,7 +373,7 @@ RSpec.describe ActivityPub::TagManager do
 
   describe '#followers_uri_for' do
     context 'with a local account' do
-      let(:account) { Fabricate(:account) }
+      let(:account) { Fabricate(:account, id_scheme: :username_ap_id) }
 
       it 'returns a string starting with web domain and with the expected path' do
         expect(subject.followers_uri_for(account))
@@ -400,7 +400,7 @@ RSpec.describe ActivityPub::TagManager do
     end
 
     context 'with a local account' do
-      let(:account) { Fabricate(:account) }
+      let(:account) { Fabricate(:account, id_scheme: :username_ap_id) }
 
       it 'returns a string starting with web domain and with the expected path' do
         expect(subject.inbox_uri_for(account))
@@ -427,7 +427,7 @@ RSpec.describe ActivityPub::TagManager do
     end
 
     context 'with a local account' do
-      let(:account) { Fabricate(:account) }
+      let(:account) { Fabricate(:account, id_scheme: :username_ap_id) }
 
       it 'returns a string starting with web domain and with the expected path' do
         expect(subject.outbox_uri_for(account))
@@ -452,7 +452,7 @@ RSpec.describe ActivityPub::TagManager do
     end
 
     it 'returns followers collection for unlisted status' do
-      status = Fabricate(:status, visibility: :unlisted)
+      status = Fabricate(:status, visibility: :unlisted, account: Fabricate(:account, id_scheme: :username_ap_id))
       expect(subject.to(status)).to eq [account_followers_url(status.account)]
     end
 
@@ -462,7 +462,7 @@ RSpec.describe ActivityPub::TagManager do
     end
 
     it 'returns followers collection for private status' do
-      status = Fabricate(:status, visibility: :private)
+      status = Fabricate(:status, visibility: :private, account: Fabricate(:account, id_scheme: :username_ap_id))
       expect(subject.to(status)).to eq [account_followers_url(status.account)]
     end
 
@@ -514,7 +514,7 @@ RSpec.describe ActivityPub::TagManager do
 
   describe '#cc' do
     it 'returns followers collection for public status' do
-      status = Fabricate(:status, visibility: :public)
+      status = Fabricate(:status, visibility: :public, account: Fabricate(:account, id_scheme: :username_ap_id))
       expect(subject.cc(status)).to eq [account_followers_url(status.account)]
     end
 
@@ -591,8 +591,9 @@ RSpec.describe ActivityPub::TagManager do
   end
 
   describe '#uri_to_local_id' do
+    let(:account) { Fabricate(:account, id_scheme: :username_ap_id) }
+
     it 'returns the local ID' do
-      account = Fabricate(:account)
       expect(subject.uri_to_local_id(subject.uri_for(account), :username)).to eq account.username
     end
   end

spec/models/remote_follow_spec.rb

@@ -68,7 +68,7 @@ RSpec.describe RemoteFollow do
       Addressable::URI.new(
         host: 'quitter.no',
         path: '/main/ostatussub',
-        query_values: { profile: "https://#{Rails.configuration.x.local_domain}/users/alice" },
+        query_values: { profile: ActivityPub::TagManager.instance.uri_for(account) },
         scheme: 'https'
       ).to_s
     end

spec/requests/activitypub/outboxes_spec.rb

@@ -215,7 +215,7 @@ RSpec.describe 'ActivityPub Outboxes' do
 
   def targets_followers_collection?(item, account)
     item[:to].include?(
-      account_followers_url(account, ActionMailer::Base.default_url_options)
+      ActivityPub::TagManager.instance.followers_uri_for(account)
     )
   end
 end

spec/requests/link_headers_spec.rb

@@ -11,7 +11,7 @@ RSpec.describe 'Link headers' do
 
       expect(response)
         .to have_http_link_header(webfinger_url(resource: account.to_webfinger_s)).for(rel: 'lrdd', type: 'application/jrd+json')
-        .and have_http_link_header(account_url(account)).for(rel: 'alternate', type: 'application/activity+json')
+        .and have_http_link_header(ActivityPub::TagManager.instance.uri_for(account)).for(rel: 'alternate', type: 'application/activity+json')
     end
   end
 end

spec/requests/oauth/userinfo_spec.rb

@@ -19,7 +19,7 @@ RSpec.describe 'OAuth Userinfo Endpoint' do
       expect(response.content_type).to start_with('application/json')
       expect(response.parsed_body).to include({
         iss: root_url,
-        sub: account_url(account),
+        sub: ActivityPub::TagManager.instance.uri_for(account),
         name: account.display_name,
         preferred_username: account.username,
         profile: short_account_url(account),

spec/requests/well_known/webfinger_spec.rb

@@ -27,7 +27,7 @@ RSpec.describe 'The /.well-known/webfinger endpoint' do
       expect(response.parsed_body)
         .to include(
           subject: eq(alice.to_webfinger_s),
-          aliases: include("https://#{Rails.configuration.x.local_domain}/@alice", "https://#{Rails.configuration.x.local_domain}/users/alice")
+          aliases: include("https://#{Rails.configuration.x.local_domain}/@alice", ActivityPub::TagManager.instance.uri_for(alice))
         )
     end
   end