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author's profile photo Hemanth Garg
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Hemanth Garg

Check Mandatory Fields (Dynamic Programming)

Posted on Feb 21, 2005 at 08:47 AM 12 Views

Hi All,

I am currently generating UI elements dynamically. I have few elements in these dynamically generated elements which are mandatory. Does anyone has information about how to programmatically check whether the entries have been made before the user is allowed to proceed to the next step? I have maintained the state property of the InputField and the webdynpro application doesnot automatically checks for the entries.

Any help will be greatly appreciated.

Thanks and regards,

Hemanth

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  • author's profile photo Former Member
    Former Member
    Posted on Feb 21, 2005 at 09:02 AM
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    Hi Hemanth,

    there are at least two ways to do this:

    1. Define some simple types in the local dictionary with minLength > 0 and use this simple types as the property types of the context attributes. If you bind the UI elements to this context attributes, the WD runtime will do the checks automatically.

    2. Check the contents of the UI elements with required input manually (by checking the contents of the bound context attributes). Use the report(Invalid)ContextAttribute... methods of the Message" target="_blank">https://media.sdn.sap.com/html/submitted_docs/60_sp2_javadocs/webdynpro/com/sap/tc/webdynpro/progmodel/api/IWDMessageManager.html">Message Manager API to report missing data.

    Hope that helps.

    Regards

    Stefan

    PS: The state property is just a visual indicator for required/not required fields and doesn't trigger any automatic validation.

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    • Former Member Hemanth Garg
      Feb 22, 2005 at 07:59 AM

      Hi Hemanth,

      yes, for the second approach you need the information, which field is mandatory and doesn't contain any content. Since you created the context attributes already, all you need to do is to get the content values from the mandatory context attributes and validate them against the criterias needed for your application (null, empty in case of String and so on). This can be done easily by creating and calling a generic method, which gets the node element, the attribute name of the attribute to check and the message key of a error, which is used for report(Invalid)ContextXX().

      But i'm still a little bit astonished, that the first approach didn't work for you.

      Hope that helps.

      Regards

      Stefan

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