Ended up doing this:
def show(xhtml: NodeSeq) : NodeSeq = {
if(S.post_?) {
val f : Option[FileParamHolder] = S.request match {
case Empty => Empty
case Full(req) =>
req.uploadedFiles.find(_.name == "file_upload")
}
if(f.isDefined) {
acceptFile(f.get)
}
}
return xhtml
}
And putting a bare upload field in the snippet, like you sugested. I
still wonder if the binding method is the best place for this, though.
On Dec 1, 10:14 am, David Pollak <feeder.of.the.be...@gmail.com>
wrote:
> If you have the Req (request), you can do:
>
> val req: Req = ...
> val theFile: Option[FileParamHolder] = req.uploadedFiles.find(_.name ==
> "my_param_name")
>
>
>
> On Tue, Dec 1, 2009 at 2:49 AM, DMB <combust...@gmail.com> wrote:
> > Just what I was looking for, thanks!
>
> > By the way, is there a way to assign a "name" attribute to a file
> > upload input field? The reason is I have a legacy piece of code that
> > does HTTP uploads by simulating a form submit. This code requires that
> > the form field name be known in advance, for obvious reasons.
>
> > On Nov 30, 9:26 pm, David Pollak <feeder.of.the.be...@gmail.com>
> > wrote:
> > > Folks,
>
> > > Lately there's been a bunch of chatter on the list about image upload and
> > > figuring out how to put the image files in the right place to serve them
> > > again.
>
> > > I've written a simple example of image uploading, storing the image in
> > the
> > > RDBMS and then serving the image. You can find the code at:
> >http://github.com/dpp/imagine/
>
> > > The file upload snippet is very simple:
>
> > > class DoUpload {
> > > private def saveFile(fp: FileParamHolder): Unit = {
> > > fp.file match {
> > > case null =>
> > > case x if x.length == 0 =>
> > > case x =>
> > > val blob = ImageBlob.create.image(x).saveMe
> > > ImageInfo.create.name
> > > (fp.fileName).mimeType(fp.mimeType).blob(blob).saveMe
> > > S.notice("Thanks for the upload")
> > > S.redirectTo("/")
> > > }
> > > }
>
> > > def render(in: NodeSeq): NodeSeq =
> > > bind("upload", in, "file" -> SHtml.fileUpload(saveFile _))
>
> > > }
>
> > > If the blob is uploaded, it's put in a row in ImageBlob and an ImageInfo
> > row
> > > is created to store the name and mime type. There are two different rows
> > so
> > > that one doesn't have to pull the whole blob back when you're checking
> > for
> > > the upload date.
>
> > > Serving the image is similarly concise:
>
> > > def serveImage: LiftRules.DispatchPF = {
> > > case req @ Req("images" :: _ :: Nil, _, GetRequest) if
> > > findFromRequest(req).isDefined =>
> > > () => {
> > > val info = findFromRequest(req).open_! // open is valid here
> > because
> > > we just tested in the guard
>
> > > // Test for expiration
> > > req.testFor304(info.date, "Expires" -> toInternetDate(millis +
> > > 30.days)) or
> > > // load the blob and return it
> > > info.blob.obj.map(blob => InMemoryResponse(blob.image,
> > > List(("Last-Modified", toInternetDate(info.date.is)),
>
> > > ("Expires", toInternetDate(millis + 30.days)),
>
> > > ("Content-Type", info.mimeType.is)), Nil, 200))
> > > }
> > > }
>
> > > If the request matches /images/xxx where xxx is a name in the ImageInfo
> > > table, check to see if we can return a 304 (not modified). If not, we
> > pull
> > > the blob from the database and return it.
>
> > > I hope this helps folks who are looking to manage and serve images.
>
> > > Thanks,
>
> > > David
>
> > > --
> > > Lift, the simply functional web frameworkhttp://liftweb.net
> > > Beginning Scalahttp://www.apress.com/book/view/1430219890
> > > Follow me:http://twitter.com/dpp
> > > Surf the harmonics
>
> > --
>
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> --
> Lift, the simply functional web frameworkhttp://liftweb.net
> Beginning Scalahttp://www.apress.com/book/view/1430219890
> Follow me:http://twitter.com/dpp
> Surf the harmonics
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