No you can't override it because SHtml is an object not a type. The
function definition above (def ajaxText(value: String, jsFunc: Call,
func: String => JsCmd) ) already exists in SHtml. In fact we have this
deferring mechanism for other functions like ajaxButton, a, etc.
If you're still having trouble using this please let me know and I'll
make and example app. for you.
Br's,
Marius
On Aug 19, 5:42 am, g-man <gregor...@gmail.com> wrote:
> OK, seems like I have to learn a little more about Scala so I can
> override the ajaxText method, right? Here it is in the docs:
>
> def ajaxText(value: String, func: String => JsCmd): Elem = ajaxText_*
> (value, SFuncHolder(func))
>
> When I fumble around, it won't compile, because I'm just not doing it
> right. My project is a hobby, not mission-critical, so I'm under no
> pressure.
>
> For now, I will change to an ajaxForm, but the learning is all good,
> and if you want to keep teaching, I will listen!
>
> Thanks for your patience...
>
> On Aug 18, 12:41 pm, "marius d." <marius.dan...@gmail.com> wrote:
>
> > Having
>
> > def ajaxText(value: String, jsFunc: Call, func: String => JsCmd)
>
> > jsFunc parameter is a Call which is defined as:
>
> > case class Call(function: String, params: JsExp*) extends JsExp
>
> > So by this you represent a javascript function invocations.
>
> > So assuming somewhere you have a javascript function like:
>
> > function myFunc(myParam, callback) {
>
> > // do some logic
> > callback()
>
> > }
>
> > in the snippet we have something like:
>
> > ajaxText(task.dueOn.toString,
> > Call("myFunc", Str("some_param_value"))
> > v => { task.dueOn(v.toLong).save; reDrawTasks();})
>
> > As you can see we called Call("myFunc", Str
> > ("some_param_value")) .. .we provided the JS function name and one
> > parameter. Lift will add the second parameter which is the callback
> > function. This callback function represents the actual ajax call and
> > since it is a callback you can invoke it whenever you want inside
> > 'myFunc' javascript function. In other words you can defer the actual
> > ajax call as you see fit.
>
> > Now myFunc function declaration can be:
> > 1. In your own .js file
> > 2. Written in the <script> tag inside your html
> > 3. Generate using Lifts' JS absctrations using JsCmds.Function()
> > object such as:
>
> > JsCmds.Function("MyFunc", List("myParam", "callback"),
> > a_JsCmd_expression_which_is_the_function_body)
>
> > The main point in all this is that you can defer the actual ajax call.
> > You know better if this fits your case.
>
> > Br's,
> > Marius
>
> > On Aug 18, 10:21 pm, g-man <gregor...@gmail.com> wrote:
>
> > > No, this is the old way ...I am unsure how to invoke the ajax method
> > > -- could you enlighten me?
>
> > > On Aug 17, 12:26 pm, "marius d." <marius.dan...@gmail.com> wrote:
>
> > > > I don't see in your code the use of the overloaded ajaxText that I
> > > > posted. Have you tried it?
>
> > > > Marius
>
> > > > On Aug 17, 10:20 pm, g-man <gregor...@gmail.com> wrote:
>
> > > > > OK, thanks for checking back...
>
> > > > > Snippet:
> > > > > swappable(<span class='dueon'>{task.dueOn.toString}</span>,
> > > > > <span class='chgDueon'>{ajaxText(task.dueOn.toString,
> > > > > v => { task.dueOn(v.toLong).save; reDrawTasks();
> > > > > }) % ("size" -> "10")}</span>)
>
> > > > > JS:
> > > > > $chgDueon // jQuery selection for text field
> > > > > .datepicker({dateFormat:'m-d-yy', minDate: +1})
> > > > > .blur(function(){$chgDueon.val(parseDate($chgDueon.val()));});
> > > > > // works well to pick a new date and change it to millis for save
>
> > > > > Emitted XHTML:
> > > > > <span>
> > > > > <span class="dueon" id="F111290299287IBE"
> > > > > onclick="jQuery('#'+'F111290299287IBE').hide();
> > > > > jQuery('#'+'F1112902992880KN').show().each(function(i) {
> > > > > var t = this; setTimeout(function() { t.focus(); },
> > > > > 200);});return false;;">
> > > > > 1248493271843</span>
> > > > > <span style="display: none" id="F1112902992880KN"
> > > > > onblur="jQuery('#'+'F111290299287IBE').show();
> > > > > jQuery('#'+'F1112902992880KN').hide();">
> > > > > <input onblur="lift_ajaxHandler('F111290299286DL1=' +
> > > > > encodeURIComponent(this.value), null, null)"
> > > > > type="text" value="1248493271843"
> > > > > onkeypress="lift_blurIfReturn(event)" size="10" />
> > > > > </span>
> > > > > </span>
>
> > > > > So, all the parts work well together, but Lift's ajax just takes off
> > > > > too quickly, and cannot read the new value.
>
> > > > > On Aug 16, 11:02 pm, "marius d." <marius.dan...@gmail.com> wrote:
>
> > > > > > You can probably use this definition of ajaxText:
>
> > > > > > def ajaxText(value: String, jsFunc: Call, func: String => JsCmd)
>
> > > > > > See the jsFunc parameter. Essentially you are specifying your
> > > > > > function
> > > > > > call that may have one parameter. To your parameter list List we'll
> > > > > > add a new parameter which is the ajax invocation function. In other
> > > > > > words your code gets that function that does the ajax call meaning
> > > > > > that you have the control over when the ajax call is made.
>
> > > > > > Br's,
> > > > > > Marius
>
> > > > > > On Aug 17, 8:55 am, "marius d." <marius.dan...@gmail.com> wrote:
>
> > > > > > > Would you please post a code snippet with what you're doing? (a
> > > > > > > minimalistic example)
>
> > > > > > > Br's,
> > > > > > > Marius
>
> > > > > > > On Aug 17, 7:41 am, g-man <gregor...@gmail.com> wrote:
>
> > > > > > > > I am moving nicely with my 'save all dates as millis and let the
> > > > > > > > client localize for display' project, learning while enhancing
> > > > > > > > the
> > > > > > > > ToDo sample app.
>
> > > > > > > > I have added a 'dueOn' field, and that is displayed as swappable
> > > > > > > > ajaxText, similar to the other fields in the tutorial.
>
> > > > > > > > I have enabled datepicker for the ajaxText field via jQuery,
> > > > > > > > and have
> > > > > > > > a parsing function attached an event listener, so when
> > > > > > > > datepicker
> > > > > > > > finishes, the date is converted to millis, ready for Lift to
> > > > > > > > send back
> > > > > > > > to the server and save.
>
> > > > > > > > So far, all good.
>
> > > > > > > > The problem is that Lift's ajax starts ('onblur') before it has
> > > > > > > > a
> > > > > > > > chance to see the new date value, so the new value is never
> > > > > > > > saved.
>
> > > > > > > > What I need is a way to tell Lift to wait until after my parser
> > > > > > > > has
> > > > > > > > had a chance to write the changed value.
>
> > > > > > > > I like the ajax style, so I don't want to make a 'submit' form,
> > > > > > > > and
> > > > > > > > 'onchange' won't do it either, because the value is actually
> > > > > > > > changed
> > > > > > > > twice (once to a formatted date, once to millis).
>
> > > > > > > > What I need is some way to say, 'OK to start ajax now'!
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