Data validation at the UI level

Hi
I have a requirement like i need to validate the input data at the UI level.
If the data is valid ,only then it should be allowed to be saved.
If someone knows how to do the same.
I have seen a method DO_VALIDATE_INPUT method in View controller (IMPL) class.No clue on how it is being used.
Regards
Leon

Hi Leon,
Are you talking about the Webclient as UI or something else??
There are 2 options:
1) You use the Get and Set methods of your context node attributes (The ...CN01 etc classes) (to be found under your IMPL class --> attributes TYPED_CONTEXT(...CTXT class) and in there you should have some ...CN01, CN02, etc. classes. Here are all the GET and SET methods. (you could also go via the views' attributes, this is the shortest way).
Within the Get (put the value in the model) and Set (get the value from the model)methods you could do some checks and show an error.
2) Use the Do_handle_data method of your IMPL class. Once data is entered in the screen, this method is always called when another action is performed (pressing a button). Here you can easily check the content of fields.
3) Use the Do_handle_event method of your IMPL class. This method is called when there is an event that is being triggered (save button is pressed). You can redefine this method and before really saving the data you can perform your checks.
Hope this helps.
Kind regards,
Micha

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