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https://issues.apache.org/jira/browse/TAP5-638?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13057904#comment-13057904
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Peter Stavrinides commented on TAP5-638:
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I think the greater issue here is exactly what Howard has mentioned:
"We don't yet have Forms and Zones working; XMLHttpRequest doesn't
automatically handle the necessary MIME multipart/form-data content type."
Nevertheless is is entirely possible though, but in older browsers you need to
encode the data yourself, which is perhaps not as trivial as it sounds, but
possible. If this underlying issue is fixed then there will be many more
options available when using Forms and Zones, ajax upload is only one of
them... I think this is worth the effort, it would be a major boon for
Tapestry. At the moment using zones with forms is very limiting, and
unnecessarily complicated.
> Support for uploading files using AJAX
> --------------------------------------
>
> Key: TAP5-638
> URL: https://issues.apache.org/jira/browse/TAP5-638
> Project: Tapestry 5
> Issue Type: Improvement
> Components: tapestry-upload
> Reporter: Hugo Palma
>
> If the upload component is included on a form that does a partial update(has
> the zone parameter set) the value property isn't updated with the
> UploadedFile instance.
> So it seems that this component upload doesn't support ajax. It would be
> great if it was possible to upload a file using AJAX.
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