First of all instead of:
("onclick" -> ajaxCall(JsRaw("$('#whatField').attr('value')"), s =>
updateWhat(s))._2)
I would use:
("onclick" -> ajaxCall(ValById("whatField"), s => updateWhat(s))._2)
That should work .... I think in your case you are setting the value
attribute of the text field to "lambda.x.x" and "$('#whatField').attr
('value') is just returning the 'value' attribute of the whatField
node. This returns the value set statically which is different from
document.getElementById("whatField").value. I know it's a bit odd ...
Br's,
Marius
On May 3, 10:51 am, Meredith Gregory <lgreg.mered...@gmail.com> wrote:
> Marius,
>
> Thanks for the tip! That gets me a little further. However, what i really
> don't understand is why it is that after i have modified the textbox from
> "lambda x.x" to "lambda x.(x x)", then when i type
> $('#whatField').attr('value') in the javascript evaluation window in firebug
> it's returning "lambda x.x". How do i access the contents of the textbox
> except by that call?
>
> Best wishes,
>
> --greg
>
>
>
> On Sun, May 3, 2009 at 12:11 AM, marius d. <marius.dan...@gmail.com> wrote:
>
> > Greg,
>
> > ajaxCall returns a tuple (String, JsExp) ... so when you use it try
> > something like:
>
> > ("onclick" -> ajaxCall(JsRaw("$('#whatField').attr('value')"), s =>
> > updateWhat(s))._2)
>
> > Br's,
> > Marius
>
> > On May 3, 9:00 am, Meredith Gregory <lgreg.mered...@gmail.com> wrote:
> > > Lifted,
>
> > > When i look at the button behavior using firebug, this is the following
> > > error i see.
>
> > > F891109765602PT1 is not defined
> > > onclick(click clientX=950, clientY=152)1tbfBLwe...6bg%3D%3D (line 2)
> > > (F891109765602PT1, lift_ajaxHand...whatField").attr("value"), null,
> > null));
>
> > > It would appear that however the
>
> > > ajaxCall(JsRaw("$('#whatField').attr('value')")
>
> > > is working it is setting up a handle that is stale by the time the
> > behavior
> > > is actually invoked. This is behind-the-scenes stuff for a programmer
> > like
> > > me. It's part of what lift is s'posed to provide. Moreover, i get no help
> > > from the compiler. The code i have written is well-typed. Any help would
> > be
> > > greatly appreciated.
>
> > > Best wishes,
>
> > > --greg
>
> > > On Sat, May 2, 2009 at 8:50 PM, Meredith Gregory
> > > <lgreg.mered...@gmail.com>wrote:
>
> > > > Lifted,
>
> > > > i'm putting together a little lift-based testharness in which to
> > evaluate
> > > > various solutions to the challenge Martin posted recently regarding
> > scalable
> > > > abstractions for a little lambda interpreter. You can get a copy of the
> > app
> > > > here <http://svn.biosimilarity.com/src/open/rlambda/trunk/>. (Please
> > note:
> > > > this is a testharness and not a proposed solution. i've got a couple of
> > > > solutions in mind, but before i post them, i'd like to put them in a
> > web
> > > > "container".) As usual, i'm running into problems on the frontend. i'm
> > not
> > > > getting expected callback behavior, and, moreover, the code i'm using
> > used
> > > > to work fine.
>
> > > > The snippet code is included below this email's closing. The relevant
> > > > fragment is listed just below. The behavior i see is that the button
> > > > produces no behavior on the server at all. The CR/LF event on the text
> > field
> > > > causes updateWhat to be called twice. Any advice on the frontend
> > behavior
> > > > would be greatly appreciated.
>
> > > > def whatNode(termStr : String) = {
> > > > theTerm = termStr
> > > > theClientRequestStr = evalStr()
> > > > var theParseResponseStr : String =
> > > > ("failure: " + theClientRequestStr + "\n");
> > > > try {
> > > > theParseResponseStr =
> > > > theREPL.showClientRequestParseTree(theClientRequestStr)
> > > > println( "parsed : " + theParseResponseStr );
> > > > //theREPL.readEvalPrint(theClientRequestStr)
> > > > }
> > > > catch {
> > > > case e => {
> > > > val sw : java.io.StringWriter = new java.io.StringWriter( );
> > > > e.printStackTrace( new java.io.PrintWriter( sw, true ) );
> > > > theParseResponseStr = theParseResponseStr + e.toString
> > > > }
> > > > }
> > > > <div id="parseTree">{theParseResponseStr}</div>
> > > > }
>
> > > > def updateWhat(str: String): JsCmd = {
> > > > println("updateWhat with " + str)
> > > > JsCmds.SetHtml("parseTree", whatNode(str))
> > > > }
>
> > > > def show(xhtml: NodeSeq): NodeSeq = {
> > > > <xml:group>
> > > > <label for="whatField">Term :</label>
> > > > { text("lambda x.x", (updateWhat _)) % ("size" -> "60") % ("id"
> > ->
> > > > "whatField") }
> > > > { <button type="button">{?("Go")}</button> %
> > > > ("onclick" -> ajaxCall(JsRaw("$('#whatField').attr('value')"), s
> > =>
> > > > updateWhat(s))) }
> > > > <br/>
> > > > <div id="parseTree">{whatNode(evalStr())}</div>
> > > > </xml:group>
> > > > }
>
> > > > Best wishes,
>
> > > > --greg
>
> > > > package com.biosimilarity.reflection.snippet
>
> > > > import net.liftweb._
> > > > import http._
> > > > import S._
> > > > import SHtml._
> > > > import util._
> > > > import Helpers._
> > > > import mapper._
> > > > import textile._
> > > > import js.{JE, JsCmd, JsCmds}
> > > > import JsCmds._
> > > > import JE._
>
> > > > import com.biosimilarity.reflection.model.REPL
>
> > > > import scala.xml._
>
> > > > class REPLForm {
> > > > val theREPL = new REPL()
> > > > var theTerm : String = "lambda x.x"
> > > > var theClientRequestStr : String = evalStr()
>
> > > > def evalStr() = theTerm
> > > > def clientRequestRequest() = theClientRequestStr
>
> > > > def parseTreeNode(clientRequestStr : String) = {
> > > > theClientRequestStr = clientRequestStr.replace( "\n", "" );
> > > > var theParseResponseStr : String =
> > > > ( "failure: " + theClientRequestStr + "\n" );
> > > > try {
> > > > theParseResponseStr =
> > > > theREPL.showClientRequestParseTree(theClientRequestStr)
> > > > //theREPL.readEvalPrint(theClientRequestStr)
> > > > }
> > > > catch {
> > > > case e => {
> > > > val sw : java.io.StringWriter = new java.io.StringWriter( );
> > > > e.printStackTrace( new java.io.PrintWriter( sw, true ) );
> > > > theParseResponseStr = theParseResponseStr + e.toString
> > > > }
> > > > }
> > > > <div id="parseTree">{theParseResponseStr}</div>
> > > > }
>
> > > > def whatNode(termStr : String) = {
> > > > theTerm = termStr
> > > > theClientRequestStr = evalStr()
> > > > var theParseResponseStr : String =
> > > > ("failure: " + theClientRequestStr + "\n");
> > > > try {
> > > > theParseResponseStr =
> > > > theREPL.showClientRequestParseTree(theClientRequestStr)
> > > > println( "parsed : " + theParseResponseStr );
> > > > //theREPL.readEvalPrint(theClientRequestStr)
> > > > }
> > > > catch {
> > > > case e => {
> > > > val sw : java.io.StringWriter = new java.io.StringWriter( );
> > > > e.printStackTrace( new java.io.PrintWriter( sw, true ) );
> > > > theParseResponseStr = theParseResponseStr + e.toString
> > > > }
> > > > }
> > > > <div id="parseTree">{theParseResponseStr}</div>
> > > > }
>
> > > > def updateWhat(str: String): JsCmd = {
> > > > println("updateWhat with " + str)
> > > > JsCmds.SetHtml("parseTree", whatNode(str))
> > > > }
>
> > > > def show(xhtml: NodeSeq): NodeSeq = {
> > > > <xml:group>
> > > > <label for="whatField">Term :</label>
> > > > { text("lambda x.x", (updateWhat _)) % ("size" -> "60") % ("id"
> > ->
> > > > "whatField") }
> > > > { <button type="button">{?("Go")}</button> %
> > > > ("onclick" -> ajaxCall(JsRaw("$('#whatField').attr('value')"), s
> > =>
> > > > updateWhat(s))) }
> > > > <br/>
> > > > <div id="parseTree">{whatNode(evalStr())}</div>
> > > > </xml:group>
> > > > }
> > > > }
>
> > > > --
> > > > L.G. Meredith
> > > > Managing Partner
> > > > Biosimilarity LLC
> > > > 1219 NW 83rd St
> > > > Seattle, WA 98117
>
> > > > +1 206.650.3740
>
> > > >http://biosimilarity.blogspot.com
>
> > > --
> > > L.G. Meredith
> > > Managing Partner
> > > Biosimilarity LLC
> > > 1219 NW 83rd St
> > > Seattle, WA 98117
>
> > > +1 206.650.3740
>
> > >http://biosimilarity.blogspot.com
>
> --
> L.G. Meredith
> Managing Partner
> Biosimilarity LLC
> 1219 NW 83rd St
> Seattle, WA 98117
>
> +1 206.650.3740
>
> http://biosimilarity.blogspot.com
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Lift" group.
To post to this group, send email to liftweb@googlegroups.com
To unsubscribe from this group, send email to
liftweb+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/liftweb?hl=en
-~----------~----~----~----~------~----~------~--~---
