LTI-366: complementary fixes for issue with codes already used error (#…

…311)

* LTI-366 remove uniqueness from codes in Room table

* LTI-366: updated schema with last migration

* LTI-366: hot-fix and followup

* LTI-366: remove uniqueness validation from model

app/controllers/rooms_controller.rb

@@ -322,6 +322,7 @@ def set_launch
   def launch_room(launch_params, tenant)
     handler = room_handler(launch_params, tenant)
     handler_legacy = launch_params['custom_params']['custom_handler_legacy'].presence
+    code = SecureRandom.alphanumeric(10)
 
     ## Any launch.
     @room = Room.find_by(handler: handler, tenant: tenant)
@@ -331,7 +332,7 @@ def launch_room(launch_params, tenant)
     if handler_legacy.nil?
       ## Regular launch
       logger.debug('This is a Regular launch...')
-      @room = Room.create(launch_room_params)
+      @room = Room.create(launch_room_params.merge({ code: code, shared_code: code }))
       logger.debug(@room.errors.full_messages) if @room.errors.any?
       return
     end
@@ -351,7 +352,7 @@ def launch_room(launch_params, tenant)
           logger.debug("Room #{@room.id} updated with fetched parameters...") && return if @room
         else
           # Create
-          @room = Room.create(fetched_room_params.merge({ code: '', shared_code: '' }))
+          @room = Room.create(fetched_room_params.merge({ code: code, shared_code: code }))
           if @room.persisted?
             logger.debug("Room #{@room.id} created with fetched parameters...") && return if @room
           else
@@ -366,7 +367,7 @@ def launch_room(launch_params, tenant)
     return unless Rails.configuration.handler_legacy_new_room_enabled
 
     logger.debug('It will attempt to create a Room with passed parameters even though a handler_legacy was passed...')
-    @room = Room.create(launch_room_params)
+    @room = Room.create(launch_room_params.merge({ code: code, shared_code: code }))
   end
 
   def launch_user(launch_params)

app/models/room.rb

@@ -17,7 +17,6 @@
 #  with BigBlueButton; if not, see <http://www.gnu.org/licenses/>.
 class Room < ApplicationRecord
   before_save :default_values
-  validates :code, uniqueness: true
 
   store_accessor :settings, [:lockSettingsDisableCam, :lockSettingsDisableMic, :lockSettingsDisablePrivateChat, :lockSettingsDisablePublicChat, :lockSettingsDisableNote]
   store_accessor :settings, %i[waitForModerator allModerators guestPolicy record autoStartRecording allowStartStopRecording]

db/migrate/20240507174455_remove_unique_index_from_rooms.rb

@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+class RemoveUniqueIndexFromRooms < ActiveRecord::Migration[6.1]
+  def up
+    # Remove the existing unique index
+    remove_index(:rooms, :code, unique: true, if_exists: true)
+    # Add a non-unique index
+    add_index(:rooms, :code, name: 'index_rooms_on_code')
+  end
+
+  def down
+    # Remove the non-unique index
+    remove_index(:rooms, name: 'index_rooms_on_code', if_exists: true)
+    # Re-add the unique index
+    add_index(:rooms, :code, unique: true, name: 'index_rooms_on_code_unique')
+  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.define(version: 2023_11_02_145703) do
+ActiveRecord::Schema.define(version: 2024_05_07_174455) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -35,7 +35,7 @@
     t.string "code"
     t.string "shared_code"
     t.boolean "use_shared_code"
-    t.index ["code"], name: "index_rooms_on_code", unique: true
+    t.index ["code"], name: "index_rooms_on_code"
     t.index ["tenant", "handler"], name: "index_rooms_on_tenant_and_handler", unique: true
     t.index ["tenant", "handler_legacy"], name: "index_rooms_on_tenant_and_handler_legacy", unique: true
   end