I think something like:
createFileHandler(path: List[String], nameOfFileParam: String,
returnContentType: String)(f: Array[Byte] => Array[Byte]): DispatchPF
would be a cool method. It would build the DispatchPF for you and all you
need do is supply the transformation function. If you wanted to get fancy
and do access control, etc., you'd have to write your own.
On Sun, Jan 11, 2009 at 7:00 AM, Marius <marius.dan...@gmail.com> wrote:
>
> I wonder if it makes sense to have a built-in DispatchPF to ease up
> things so that user to just provide a (FileParamHolder =>
> LiftResponse)
>
> perhaps something like:
>
> FIleUploader.init {
>
> case (path, fileParamHolder ) => a LiftResponse
>
> }
>
> ... internally it will just add itsellf as a DispathPf
>
> Br's,
> Marius
>
> On Jan 11, 3:43 pm, "David Pollak" <feeder.of.the.be...@gmail.com>
> wrote:
> > Alli,
> > Yes, I think your want to go with a DispatchPF to handle the destination
> of
> > the POST request from your Flash component.
> >
> > DispatchPF {
> > case r @ Req("upload" :: "thing" :: Nil, "", PostRequent) if
> > r.uploadedFiles.exists(_.name == "upload") =>
> > () => {
> > val uploadedFile = r.uploadedFiles.find(_.name == "upload").get
> > val fileBytes = uploadedFile.file
> > ... do stuff here
> > val newFileBytes: Array[Byte]
> > val headers: List[(String, String)]
> > Full(InMemoryResponse(newFileBytes, headers, Nil /* no cookies sent
> back
> > */, 200))
> > }
> >
> > }
> >
> > Thanks,
> >
> > David
> >
> >
> >
> > On Sun, Jan 11, 2009 at 4:52 AM, Alli <allilis...@gmail.com> wrote:
> >
> > > I'm not sure how i would hook SHtml.fileUpload into this because
> > > swfupload lets me configure an URL
> > > that it will post to for each file uploaded, I don't even need a form
> > > to do this (this is all flash/swf). I currently
> > > have a LiftView subclass that handles it and is processing it like
> > > this:
> >
> > > S.request match {
> > > case Full(req) =>
> > > req.uploadedFiles.foreach { file: FileParamHolder =>
> > > println("Name: " + file.name)
> > > println("File name: " + file.fileName)
> > > resizeAndSave(file)
> > > }
> >
> > > case _ =>
> > > }
> >
> > > I guess the only thing I need to change is using a custom dispatch
> > > instead of the view in order to return my own LiftResponse instead of
> > > a NodeSeq
> > > back to the client.
> >
> > > Cheers,
> > > Alli
> >
> > > On Jan 11, 12:37 pm, Marius <marius.dan...@gmail.com> wrote:
> > > > Alli are you using SHtml.fileUpload ... or you want to upload it
> > > > "manually" processing everything in your dispatch? .. I'd opt in for
> > > > SHtml.fileUpload because there is a bunch of stuff Lift does for you.
> >
> > > > On Jan 11, 5:12 am, Alli <allilis...@gmail.com> wrote:
> >
> > > > > Yeah I think I need to add a custom dispatch function and make that
> > > > > return my own response. I was actually
> > > > > hoping I could do this straight from the snippet instead of having
> to
> > > > > redirect, makes the whole thing more complex.
> >
> > > > > On Jan 11, 12:41 am, Marc Boschma
> > > > > <marc+lift...@boschma.cx<marc%2blift...@boschma.cx>
> <marc%2blift...@boschma.cx <marc%252blift...@boschma.cx>>>
> > > wrote:
> >
> > > > > > I'm not an expert but I would model a Response class in much the
> same
> >
> > > > > > way as:
> >
> > > > > > package net.liftweb.http
> >
> > > > > > object PlainTextResponse {
> > > > > > def apply(text: String): PlainTextResponse =
> > > > > > PlainTextResponse(text, Nil, 200)
> > > > > > def apply(text: String, code: Int): PlainTextResponse =
> > > > > > PlainTextResponse(text, Nil, code)
> > > > > > }
> >
> > > > > > case class PlainTextResponse(text: String, headers:
> List[(String,
> >
> > > > > > String)], code: Int) extends LiftResponse {
> > > > > > def toResponse = {
> > > > > > val bytes = text.getBytes("UTF-8")
> > > > > > InMemoryResponse(bytes, ("Content-Length",
> > > > > > bytes.length.toString) :: ("Content-Type", "text/plain") ::
> headers,
> >
> > > > > > Nil, code)
> > > > > > }
> > > > > > }
> >
> > > > > > from TextResponse.scala. Look at InMemoryResponse or possibly
> > > > > > StreamingResponse in Response.scala.
> >
> > > > > > Marc
> >
> > > > > > On 11/01/2009, at 4:27 AM, Alli wrote:
> >
> > > > > > > Hey, I have been searching the list and also the liftweb.netwiki
> > > and
> > > > > > > haven't found a way to do this:
> >
> > > > > > > I have a form to upload a file that I want to manipulate and
> send
> > > back
> > > > > > > to the client. When sending it back I am using S.setHeader to
> set
> > > the
> > > > > > > content type, disposition etc but I haven't found a way to
> write
> > > the
> > > > > > > file back to the response. What I think I need is access to the
> > > > > > > response's printwriter (response.getWriter()) instance. Any
> help
> > > would
> > > > > > > be greatly appreciated.
> >
> > > > > > > Cheers,
> > > > > > > Alli
> >
> > --
> > Lift, the simply functional web frameworkhttp://liftweb.net
> > Collaborative Task Managementhttp://much4.us
> > Follow me:http://twitter.com/dpp
> > Git some:http://github.com/dpp
> >
>
--
Lift, the simply functional web framework http://liftweb.net
Collaborative Task Management http://much4.us
Follow me: http://twitter.com/dpp
Git some: http://github.com/dpp
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