Welcome to Software Development on Codidact!
Will you help us build our independent community of developers helping developers? We're small and trying to grow. We welcome questions about all aspects of software development, from design to code to QA and more. Got questions? Got answers? Got code you'd like someone to review? Please join us.
Post History
You can do that by letting the required attribute evaluate true only when the form's main submit button is invoked. First bind the submit button component to an unique variable in page's EL scope ...
Answer
#1: Initial revision
by
BalusC
·
2023-09-28T11:28:24Z (about 1 year ago)
You can do that by letting the `required` attribute evaluate `true` only when the form's main submit button is invoked.
First bind the submit button component to an unique variable in page's EL scope (and thus not necessarily to a bean property!):
```xml
<h:commandButton ... binding="#{submit}" />
```
Then let the input component's `required` attribute check if the request parameter associated with the submit button component is present in the request parameter map:
```xml
<h:selectManyMenu ... required="#{not empty param[submit.clientId]}">
```