[jira] [Created] (MYFACES-3667) UIInput renders the old value after required validation error if field is empty

["dennis hoersch (JIRA)" <de...@myfaces.apache.org>]

dennis hoersch created MYFACES-3667:
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             Summary: UIInput renders the old value after required validation error if field is empty
                 Key: MYFACES-3667
                 URL: https://issues.apache.org/jira/browse/MYFACES-3667
             Project: MyFaces Core
          Issue Type: Bug
    Affects Versions: 2.1.6
         Environment: MyFaces 2.1.6, Tomahawk20 1.1.11
            Reporter: dennis hoersch


We have set the parameter 'javax.faces.INTERPRET_EMPTY_STRING_SUBMITTED_VALUES_AS_NULL' to tr.

Scenario:
I have a required input field. I type in a value and submit it. Then I remove the value and try to submit. As expected the validation fails. But now the old value is rendered again.

The reason is that other parts rendering the input test whether submittedValue is null and if so render the value.

If the named parameter is true UIInput set the submittedValue to null if is empty, not only internally during validation method working.

There is a comment in UIInput saying that 'setSubmittedValue(null)' is wrong. Maybe it is wrong and the line should be removed? If I remove it, the behavior is as expected and the empty value is rendered.

----
// Begin new JSF 2.0 requirement (INTERPRET_EMPTY_STRING_SUBMITTED_VALUES_AS_NULL)
if (shouldInterpretEmptyStringSubmittedValuesAsNull(context) && isEmptyString(submittedValue))
{   
    // -= matzew = setSubmittedValue(null) is wrong, see:
    // https://javaserverfaces-spec-public.dev.java.net/issues/show_bug.cgi?id=671
    setSubmittedValue(null);
    submittedValue = null;
}
// End new JSF 2.0 requirement (INTERPRET_EMPTY_STRING_SUBMITTED_VALUES_AS_NULL)

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