Add `reason` param to `POST /api/v1/accounts` REST API (#12064)

For approval-required registrations mode

app/controllers/api/v1/accounts_controller.rb

@@ -78,7 +78,7 @@ class Api::V1::AccountsController < Api::BaseController
   end
 
   def account_params
-    params.permit(:username, :email, :password, :agreement, :locale)
+    params.permit(:username, :email, :password, :agreement, :locale, :reason)
   end
 
   def check_enabled_registrations

app/services/app_sign_up_service.rb

@@ -6,7 +6,8 @@ class AppSignUpService < BaseService
 
     user_params           = params.slice(:email, :password, :agreement, :locale)
     account_params        = params.slice(:username)
-    user           = User.create!(user_params.merge(created_by_application: app, password_confirmation: user_params[:password], account_attributes: account_params))
+    invite_request_params = { text: params[:reason] }
+    user                  = User.create!(user_params.merge(created_by_application: app, password_confirmation: user_params[:password], account_attributes: account_params, invite_request_attributes: invite_request_params))
 
     Doorkeeper::AccessToken.create!(application: app,
                                     resource_owner_id: user.id,

spec/services/app_sign_up_service_spec.rb

@@ -38,6 +38,15 @@ RSpec.describe AppSignUpService, type: :service do
       user = User.find_by(id: access_token.resource_owner_id)
       expect(user).to_not be_nil
       expect(user.account).to_not be_nil
+      expect(user.invite_request).to be_nil
+    end
+
+    it 'creates an account with invite request text' do
+      access_token = subject.call(app, good_params.merge(reason: 'Foo bar'))
+      expect(access_token).to_not be_nil
+      user = User.find_by(id: access_token.resource_owner_id)
+      expect(user).to_not be_nil
+      expect(user.invite_request&.text).to eq 'Foo bar'
     end
   end
 end