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  1. Tapestry 5
  2. TAP5-2539

Cancelling a form should skip server-side validation


    • Type: Improvement
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: 5.4.1
    • Fix Version/s: None
    • Component/s: tapestry-core
    • Labels:


      Ever since version 5.2, setting a Submit's (or LinkSubmit's) "mode" parameter to "cancel" causes Tapestry to skip client-side validation, but not server-side validation. This is counter-intuitive and leads to extra boiler-plate code to set a flag in onCancel() and check it in onValidate() to decide whether to perform server-side validatation. Instead, "cancel" should automatically skip server-side validation (triggering the cancel event instead of validate, success and failure events).

      For backward compatibility, a new symbol, "tapestry.form-cancel-client-only", will be false by default but can be overridden to true to restore the previous behavior.

      The existing mode="unconditional" setting will remain available for those cases where server-side validate, success and failure events should still be triggered (such as save as draft scenarios) without client-side validation.

      As part of this change, the documentation for Submit, LinkSubmit, EventConstants#CANCEL, SubmitMode#CANCEL and Form will be updated to remove the current ambiguities.


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              • Assignee:
                bobharner Bob Harner
                bobharner Bob Harner
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