fix(SelectWidget): render empty string for undefined values instead of undefined

Author: nlemoine

CHANGELOG.md

@@ -22,11 +22,48 @@ should change the heading of the (upcoming) version to include a major version b
 
 - Forward `required` to `BaseInputTemplate` so that required string and number fields render the HTML `required` attribute, fixing [#3743](https://github.com/rjsf-team/react-jsonschema-form/issues/3743)
 
+## @rjsf/chakra-ui
+
+- Fixed `SelectWidget` rendering array indices instead of real enum values when `nameGenerator` is active, breaking native form submission ([#4693](https://github.com/rjsf-team/react-jsonschema-form/issues/4693))
+
 ## @rjsf/core
 
 - Fixed a breaking change introduced in v6.4.0 where array properties with enum items no longer used `ui:enumNames` from the array property's uiSchema ([#4985](https://github.com/rjsf-team/react-jsonschema-form/issues/4985))
 - Passed `parentUiSchema` to `ArrayFieldItem` to maintain `uiSchema`, this prop was introduced recently but was not being passed
 - Fixed `extraErrors` not displaying when `customErrors` are also present (e.g., with array fields and controlled `formData`), fixing [#4982](https://github.com/rjsf-team/react-jsonschema-form/issues/4982)
+- Fixed `SelectWidget` rendering array indices instead of real enum values when `nameGenerator` is active, breaking native form submission ([#4693](https://github.com/rjsf-team/react-jsonschema-form/issues/4693))
+
+## @rjsf/daisyui
+
+- Fixed `SelectWidget` rendering array indices instead of real enum values when `nameGenerator` is active, breaking native form submission ([#4693](https://github.com/rjsf-team/react-jsonschema-form/issues/4693))
+
+## @rjsf/fluentui-rc
+
+- Fixed `SelectWidget` rendering array indices instead of real enum values when `nameGenerator` is active, breaking native form submission ([#4693](https://github.com/rjsf-team/react-jsonschema-form/issues/4693))
+
+## @rjsf/mantine
+
+- Fixed `SelectWidget` rendering array indices instead of real enum values when `nameGenerator` is active, breaking native form submission ([#4693](https://github.com/rjsf-team/react-jsonschema-form/issues/4693))
+
+## @rjsf/mui
+
+- Fixed `SelectWidget` rendering array indices instead of real enum values when `nameGenerator` is active, breaking native form submission ([#4693](https://github.com/rjsf-team/react-jsonschema-form/issues/4693))
+
+## @rjsf/primereact
+
+- Fixed `SelectWidget` rendering array indices instead of real enum values when `nameGenerator` is active, breaking native form submission ([#4693](https://github.com/rjsf-team/react-jsonschema-form/issues/4693))
+
+## @rjsf/react-bootstrap
+
+- Fixed `SelectWidget` rendering array indices instead of real enum values when `nameGenerator` is active, breaking native form submission ([#4693](https://github.com/rjsf-team/react-jsonschema-form/issues/4693))
+
+## @rjsf/semantic-ui
+
+- Fixed `SelectWidget` rendering array indices instead of real enum values when `nameGenerator` is active, breaking native form submission ([#4693](https://github.com/rjsf-team/react-jsonschema-form/issues/4693))
+
+## @rjsf/shadcn
+
+- Fixed `SelectWidget` rendering array indices instead of real enum values when `nameGenerator` is active, breaking native form submission ([#4693](https://github.com/rjsf-team/react-jsonschema-form/issues/4693))
 
 # 6.4.1
 

packages/shadcn/src/SelectWidget/SelectWidget.tsx

@@ -68,7 +68,7 @@ export default function SelectWidget<
             useRealValues
               ? value !== undefined
                 ? String(value)
-                : undefined
+                : ''
               : (enumOptionsIndexForValue<S>(value ?? defaultValue, enumOptions, false) as unknown as string)
           }
           onValueChange={(selectedValue) => {