Fix AbstractDateField parsing and errors handling, support locale (#9740)

Fixes #9518
Fixes #8991
Fixes #8687

1 files changed, 3 insertions, 2 deletions

diff --git a/documentation/components/components-datefield.asciidoc b/documentation/components/components-datefield.asciidoc
index 3cbba0588f..6137bd0c3d 100644
--- a/documentation/components/components-datefield.asciidoc
+++ b/documentation/components/components-datefield.asciidoc
@@ -121,10 +121,11 @@ in the following example.
 DateField date = new DateField("My Date") {
     @Override
     protected Result<LocalDate> handleUnparsableDateString(
-          String dateString) {        
+          String dateString) {
         try {
             // try to parse with alternative format
-            return Result.ok(LocalDate.of(dateString, myFormat));
+            LocalDate parsedAtServer = LocalDate.parse(dateString, DateTimeFormatter.ISO_DATE);
+            return Result.ok(parsedAtServer);
         } catch (DateTimeParseException e) {
            return Result.error("Bad date");
         }