fix: object validation collapsed

packages/core/dev-test/config.yml

@@ -606,6 +606,27 @@ collections:
                 name: thumb
                 widget: image
                 required: false
+          - label: Collapsed, optional with required children
+            name: collapsed_optional_with_required_children
+            widget: object
+            required: false
+            collapsed: true
+            fields:
+              - name: layout
+                widget: hidden
+                default: post
+              - label: Number of posts on frontpage
+                name: front_limit
+                widget: number
+                required: true
+              - label: Author
+                name: author
+                widget: string
+                required: true
+              - label: Thumbnail
+                name: thumb
+                widget: image
+                required: true
       - name: relation
         label: Relation
         file: _widgets/relation.json

packages/core/src/reducers/selectors/entryDraft.ts

@@ -3,9 +3,13 @@ import { getDataPath } from '@staticcms/core/lib/i18n';
 import type { I18nSettings } from '@staticcms/core/interface';
 import type { RootState } from '@staticcms/core/store';
 
+export const getEntryDataPath = (i18n: I18nSettings | undefined) => {
+  return (i18n && getDataPath(i18n.currentLocale, i18n.defaultLocale)) || ['data'];
+};
+
 export const selectFieldErrors =
   (path: string, i18n: I18nSettings | undefined) => (state: RootState) => {
-    const dataPath = (i18n && getDataPath(i18n.currentLocale, i18n.defaultLocale)) || ['data'];
+    const dataPath = getEntryDataPath(i18n);
     const fullPath = `${dataPath.join('.')}.${path}`;
     return state.entryDraft.fieldsErrors[fullPath] ?? [];
   };

packages/core/src/widgets/object/ObjectControl.tsx

@@ -6,6 +6,7 @@ import ObjectWidgetTopBar from '@staticcms/core/components/UI/ObjectWidgetTopBar
 import Outline from '@staticcms/core/components/UI/Outline';
 import { transientOptions } from '@staticcms/core/lib';
 import { compileStringTemplate } from '@staticcms/core/lib/widgets/stringTemplate';
+import { getEntryDataPath } from '@staticcms/core/reducers/selectors/entryDraft';
 
 import type { ObjectField, ObjectValue, WidgetControlProps } from '@staticcms/core/interface';
 import type { FC } from 'react';
@@ -61,7 +62,7 @@ const ObjectControl: FC<WidgetControlProps<ObjectValue, ObjectField>> = ({
   hasErrors,
   value = {},
 }) => {
-  const [collapsed, setCollapsed] = useState(false);
+  const [collapsed, setCollapsed] = useState(field.collapsed ?? false);
 
   const handleCollapseToggle = useCallback(() => {
     setCollapsed(!collapsed);
@@ -75,6 +76,13 @@ const ObjectControl: FC<WidgetControlProps<ObjectValue, ObjectField>> = ({
 
   const multiFields = useMemo(() => field.fields, [field.fields]);
 
+  const childHasError = useMemo(() => {
+    const dataPath = getEntryDataPath(i18n);
+    const fullPath = `${dataPath}.${path}`;
+
+    return Boolean(Object.keys(fieldsErrors).find(key => key.startsWith(fullPath)));
+  }, [fieldsErrors, i18n, path]);
+
   const renderedField = useMemo(() => {
     return (
       multiFields?.map((field, index) => {
@@ -132,15 +140,17 @@ const ObjectControl: FC<WidgetControlProps<ObjectValue, ObjectField>> = ({
             collapsed={collapsed}
             onCollapseToggle={handleCollapseToggle}
             heading={objectLabel}
-            hasError={hasErrors}
+            hasError={hasErrors || childHasError}
             t={t}
             testId="object-title"
           />
         )}
         <StyledFieldsBox $collapsed={collapsed} key="object-control-fields">
           {renderedField}
         </StyledFieldsBox>
-        {forList ? null : <Outline key="object-control-outline" hasError={hasErrors} />}
+        {forList ? null : (
+          <Outline key="object-control-outline" hasError={hasErrors || childHasError} />
+        )}
       </StyledObjectControlWrapper>
     );
   }