[pickers] Fix DateTimeRangePicker error when using format without t…

…ime (@fxnoob) (#15341) Co-authored-by: Hitesh S. <[email protected]> Co-authored-by: Lukas Tyla <[email protected]>
mui · Nov 8, 2024 · dd0ea70 · dd0ea70
1 parent ead6cb7
commit dd0ea70
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Showing 2 changed files with 9 additions and 2 deletions.
diff --git a/packages/x-date-pickers/src/internals/hooks/useField/useField.test.tsx b/packages/x-date-pickers/src/internals/hooks/useField/useField.test.tsx
@@ -1,5 +1,5 @@
 import { expect } from 'chai';
-import { getSectionVisibleValue } from './useField.utils';
+import { getSectionVisibleValue, parseSelectedSections } from './useField.utils';
 
 const COMMON_PROPERTIES = {
   startSeparator: '',
@@ -56,4 +56,10 @@ describe('useField utility functions', () => {
       ).to.equal('\u20681\u2069');
     });
   });
+
+  describe('parseSelectedSections', () => {
+    it('should return null when selectedSections is not available in sections', () => {
+      expect(parseSelectedSections('year', [])).to.equal(null);
+    });
+  });
 });
diff --git a/packages/x-date-pickers/src/internals/hooks/useField/useField.utils.ts b/packages/x-date-pickers/src/internals/hooks/useField/useField.utils.ts
@@ -812,7 +812,8 @@ export const parseSelectedSections = (
   }
 
   if (typeof selectedSections === 'string') {
-    return sections.findIndex((section) => section.type === selectedSections);
+    const index = sections.findIndex((section) => section.type === selectedSections);
+    return index === -1 ? null : index;
   }
 
   return selectedSections;