rich:fileUpload with parameters and AllowFlash

[mattdavies]

Hey all-

I upgraded to 3.2.2 to fix a problem with my fileuploading abilities and now have a new issue.

I was running into an issue before with my maxRequestSize parameter in the Seam Filter not being respected. I upgraded to 3.2.2 and that is now fixed.

So, with the following configuration I lose the ability to post a parameter with the file upload.

<rich:fileUpload
 fileUploadListener="#{workOrderAction.listener}"
 maxFilesQuantity="#{workOrderAction.uploadsAvailable}"
 acceptedTypes="*"
 listHeight="50"
 allowFlash="true"
 rendered="#{empty entry.uploadedFiles}"
 autoclear="false"
 immediate="false"
 immediateUpload="true" >

 <f:facet name="label">
 <h:outputText value="{_KB}KB from {KB}KB uploaded --- {mm}:{ss}"></h:outputText>
 </f:facet>

 <a4j:support event="onuploadcomplete" reRender="printLocationsList" />
 <f:param name="plid" value="#{entry.id}"/>
 </rich:fileUpload>

I use the <f:param name="plid ... to distinquish which of several file upload controls fires the upload on a given page. One page may contain 5 file upload controls and the files need to be sent in different directions. The fileUpload is wrapped by a data table.

So, how do I send a parameter along with the fileupload now when using allowFlash?

[mattdavies]

BTW the code used to retrieve the parameter is as follows:

String plid = ((HttpServletRequest) FacesContext.getCurrentInstance().getExternalContext().getRequest()).getParameter("plid");

TIA

[shadowcreeper]

You could also use:

<a4j:support event="onuploadcomplete" reRender="printLocationsList" >
 <a4j:actionparam name="plid" value="#{entry.id}" assignTo="#{backingBean.requestingPlid}"/>
</a4j:support>

Then you wouldn't need to jump through context hoops to get the parameter.

[mattdavies]

Thanks. I have thought about something like this, but I worry about a race condition, however unlikely, that multiple uploads complete at the same time.

In my estimation what would be nice is to either dynamically set the ID with something like

<rich:fileUpload id="i#{entry.id}" ...

but my understanding is the ID is set before the EL is completed so this cannot work.

or to fire off an action that, upon upload completion, would attach the plid to a hashmap with the entry.id as the key.

[shadowcreeper]

So why not make your setRequestingPlid method just add an element to a list (no elements would be dropped -- synchronize if you want to) and reRender="#{bean.requestingPlids}"?

Have you tried attaching it to a hashmap (assignTo="#{bean.requestingPlids[entry.id]}")? Not sure what you are trying to use for the hashmap value though (some synchronizing may be required to make these safe)...

[andrei_exadel]

Hi,

Yes. This issue was added to JIRA: https://jira.jboss.org/jira/browse/RF-4472.
Before it will be fixed please try to use hidden input as workaround to post parameter to server.

[mattdavies]

Thanks,
That worked.

Here's what I did to fix it.

<h:form>

 <rich:fileUpload ... />

 <input type="hidden" name="plid" value="#{entry.id}" />

</h:form>