Shay Shmeltzer's Oracle Development Tools Tips

Required Field Validation in Oracle MAF

Shay Shmeltzer
Director of Product Management - Oracle

A short entry to explain how to do field validation in Oracle MAF. As an example let's suppose you want a field to have a value before someone clicks to do an operation.

To do that you can set the field's attribute for required and "show required" like this:

  <amx:inputText label="label1" id="it1" required="true" showRequired="true"/>

 Now if you run your page, leave the field empty and click a button that navigates to another page, you'll notice that there was no indication of an error. This is because you didn't tell the AMX page to actually do a validation. 

 To add validation you use an amx:validationGroup tag that will surround the fields you want to validate.

For example:

     <amx:validationGroup id="vg1">

    <amx:inputText label="label1" id="it1" required="true" showRequired="true"/>


Then you can add a amx:validateOperation tag to the button that does navigation and tell it to validate the group you defined before (vg1 in our example).

       <amx:commandButton id="cb2" text="go" action="gothere">

        <amx:validationBehavior id="vb1" group="vg1"/>


Now when you run the page and try to navigate you'll get your validation error.

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Comments ( 3 )
  • guest Tuesday, June 2, 2015

    Is there an option to customize the message that gets displayed on error?



  • pallavi Friday, January 22, 2016

    Hi shay,

    unable to fire the validation when the binding object is integer.



  • Yas Wednesday, July 29, 2020
    Hi Shy,

    We are modifying one field in std MAF application to set required true but its not working.
    Any recommendation.

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