Attach Relation Manager

Tables\Actions\AttachAction::make()
                    ->recordSelect(
                        fn (Select $select) => $select->noSearchResultsMessage(__('equipment.equipment_resource.search_field')),
                    )
                    ->allowDuplicates()
                    ->color('success')
                    ->preloadRecordSelect()
                    ->form(fn (AttachAction $action): array => [
                        $action->getRecordSelect(),
                        Forms\Components\TextInput::make('serial_number')
                            ->numeric()
                            ->minValue(1)
                            ->label(__('construction-equipment.construction_equipment_resource.serial_number'))
                            ->unique(ignoreRecord: true)
                            ->required()
                            ->maxLength(255)
                            ->rule(static function (Forms\Get $get, Forms\Components\Component $component): Closure {
                                return static function (string $attribute, $value, Closure $fail) use ($get, $component) {
                                    $existingRecord = DB::table('construction_has_equipment')
                                        ->where('serial_number', $value)
                                        ->exists();

                                    if ($existingRecord) {
                                        $fail(__('construction-equipment.construction_equipment_resource.error'));
                                    }
                                };
                            }),
                    ]),