Fabrício Fonseca created MYFACES-4319:
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Summary: Null submitted values handling error
Key: MYFACES-4319
URL: https://issues.apache.org/jira/browse/MYFACES-4319
Project: MyFaces Core
Issue Type: Bug
Affects Versions: 2.3.6
Environment: Open Liberty 20.0.0.1
Reporter: Fabrício Fonseca
When running MyFaces with it seems like an error occurs preventing "Process
Validations" phase to execute if you try to submit empty string values.
I found out when trying to use the TrimConverter utility class from the
OmniFaces library. This is a Faces Converter which trim all submitted string
values. If the trimmed value has a length of 0, the converter returns null.
Whenever i try to submit a form leaving the fields empty, the properties of the
backing bean are not getting validated neither the bean method associated with
the submit action is invoked. The form is rendered again.
Steps to reproduce:
1- Create a form with some fields linked with corresponding backing bean string
properties;
2 - Add @NotNull constraint to the backing bean properties;
3 - Create a Faces Converter which converts empty string values to null. Attach
the converter to java.lang.String class (through faces-config
<converter-for-class> element)
4 - Run the project and try to submit empty string values;
Please note this error may be related to this:
https://stackoverflow.com/questions/56279977/blank-input-string-fields-submitted-as-empty-strings-vs-null-jsf-2-3-myfaces
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