David,
That's what I thought. All I needed to do was create the Mapper.toForm
like so:
item.toForm(Full("Save"), { _.save })
and the item would be saved on submit. But it doesn't work in my case.
Glenn
On Nov 20, 10:05 am, David Pollak <[email protected]>
wrote:
> Glenn,
>
> All functions are bound to the current state in the scope that the function
> was created. There's no need to do weird RequestVar things with Hidden
> fields or anything else. If you've got a function passed to SHtml.text,
> submit, etc. that function closes over its local scope: it captures all the
> variables it refers to.
>
> So:
>
> def mySnippet = {
> val myInstance = MyTable.find(whatever)
>
> SHtml.ajaxCheckbox(..., bool => {myInstance.boolField(bool).save; Noop})
>
> }
>
> In the above code, you've captured the instance in the val myInstance...
> that's kept around for the lifespan of the function that you passed to
> ajaxCheckbox.
>
> Thanks,
>
> David
>
>
>
> On Fri, Nov 20, 2009 at 9:45 AM, glenn <[email protected]> wrote:
> > I've been following this thread as lately I'm having difficulty with
> > an ajax-submitted
> > request in my app. Here's the scenario (There's no simple way to
> > describe this, so bear with me):
>
> > I create a JQuery tree of my data (Mapper object with just an item
> > name and a parent Mapper object as it's fields) as follows:
>
> > def buildTree(in:NodeSeq):NodeSeq = {
>
> > object MyJqLoad {
> > def apply(content: JsExp) = new JsExp with JQueryRight with
> > JQueryLeft {
> > def toJsCmd = JqId("json_result").toJsCmd + ".load(" +
> > content.toJsCmd + JsRaw("""+this.id""") + ")"
> > }
> > }
>
> > val host = "http://"; + S.hostName
> > val link = host + ":8080" + S.contextPath + "/api/json/" +
> > dbTableName.toLowerCase + "/"
>
> > val func = AnonFunc( MyJqLoad(link))
>
> > TreeView("tree", JsObj(("persist", "location"), ("toggle", func)),
> > loadTree, loadNode)
> > }
>
> > The functions, loadTree and loadNode, are used to asynchronously
> > build the tree of item names from the Mapper instances.
> > The link val creates a URL, for example,http://localhost:8080/api/json/
> > <dbTableName>/,
> > where dbTableName is just the Mapper object name.
>
> > On the client, the user clicks on a tree item, which, as you can see
> > from the above code, submits the Mapper id selected to the server,
> > which then
> > pulls the Mapper.toForm html from the Mapper instance and returns it
> > to the client at <div id="json_result"/>, which is in my template.
> > This all works great.
>
> > Where this all breaks down, is in submitting the returned
> > Mapper.toForm back to the server when I click on the "Save" button,
> > because no Mapper instance
> > exists at that point in the request or session for the save button to
> > act on.
>
> > Somewhere, I'm thinking I have to modify the Mapper.toForm html so the
> > submit button runs another JavaScript function on the client to return
> > the Mapper id
> > to the server for processing. But I haven't yet been able to do this.
> > One of the problems is that I don't even have an id on the client
> > (none is returned with Mapper.toForm
> > html) to work with. And, it seems to me that to make this scenario
> > work, I'm forced to become a JavaScript guru and work outside of Lift.
> > In other words, if there isn't
> > a mechanism in Lift to handle this situation directly, there should
> > be.
>
> > One of the things I've tried is to add a hidden form field to the
> > Mapper.toForm html,
>
> > SHtml.hidden(() => itemIdVar(id.toString)),
>
> > where itemIdVar extends RequestVar[String].
>
> > But I couldn't make that work either. The hidden form field is suppose
> > to run the ()=Any function, and it may do that, but not in the correct
> > sequence to do any good
> > when the form is submitted.
>
> > Glenn
>
> > On Nov 19, 11:35 pm, Jeppe Nejsum Madsen <[email protected]> wrote:
> > > Chris Lewis <[email protected]> writes:
> > > > Thanks for the feedback Jeppe. I can't completely infer the context of
> > > > your example,
>
> > > Seems to happen a lot to me lately. :-) This was just a quick paste from
> > > our codebase....
>
> > > > but I get the idea (and I hadn't known about TemplateFinder). Here's
> > > > what I've hacked together so far.
>
> > > /Jeppe
>
> > --
>
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