[jira] [Created] (WICKET-6480) SubmitLink can submit the form multiple times

["Sven Ackermann (JIRA)" <ji...@apache.org>]

Sven Ackermann created WICKET-6480:
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             Summary: SubmitLink can submit the form multiple times
                 Key: WICKET-6480
                 URL: https://issues.apache.org/jira/browse/WICKET-6480
             Project: Wicket
          Issue Type: Improvement
          Components: wicket
    Affects Versions: 7.8.0
            Reporter: Sven Ackermann


Hi,
I recently had a problem with a SubmitLink where a user double clicked on it (in Chrome 60.0.3112.90). The form was submitted twice and the submit action executed twice. I even could reproduce this with 5 clicks resulting in 5 submits.
To fix that, I just replaced the SubmitLink with a Button where the browser submits the form only on the first click. Browsers can/do not prevent that for the Javascript that is used with SubmitLink.

Javadoc of SubmitLink says "A link which can be used exactly like a Button to submit a Form.". That is not exactly true, because you have to be aware of the fact that it does not prevent multiple submits.

My suggestion is to either put a warning about that in the doc or add a flag to SubmitLink that modifies the onclick-Javascript such that it will be executed only once per page.

Thanks
Sven



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