[Seaside] Checkbox and AJAX?

[Mariano Martinez Peck]

Thank you all for the explanations. I do get it now. Now that I made the
simplest case to work (adding an id per tr), I would like to make the Johan
solution (finding the closest tr). I tried:

html form: [
html label:[
html checkbox
 onClick:  (((JSStream on: 'var myself = this'),
                (html jQuery ajax
                          serializeThisWithHidden;
                          script: [ :s | s << (((s jQuery
expression:(JSStream on: 'myself')) closest: 'tr') addClass: 'selectedRow')
])) asFunction apply: #());
value: (self isSelected: anObject);
callback: [ :value | self selectRow: anObject value: value ]]]

But I get: SyntaxError: function statement requires a name


The onClick is being generated like this:

a JSFunction (function(){var myself =
this;$.ajax({"url":"/reps","data":["_s=nHl8jzTmLkMbcOME","_k=2IH4kmR1ds-rEaua","accessMenu=Clients","activityMenu=Clients","65",$(this).next("input:hidden").andSelf().serialize()].join("&"),"dataType":"script"})}())

Note that if I put a halt in #script, it doesn't even get call.

I removed the asFunction apply:   letting only something like this:

 onClick:  (((JSStream on: 'var myself = this'),
                (html jQuery ajax
                          serializeThisWithHidden;
                          script: [ :s |  self halt. s << (((s jQuery
expression:(JSStream on: 'myself')) closest: 'tr') addClass: 'selectedRow')
])) );

This solved that problem, but my row doesn't get the css class yet. The
#script: does halts, and generates a script like this one:

a JSScript ($(myself).closest("tr").addClass("selectedRow"))

Any ideas?

Thanks in advance,





On Sun, Jul 6, 2014 at 9:14 AM, Johan Brichau <johan at inceptive.be> wrote:

> Hi,
>
> Both in the context of the #script: ajax callback-to-smalltalk and the
> ajax #onSuccess: javascript-callback option, the javascript's this variable
> will not hold anything related to the DOM.
>
> The difference between #script: and #onSuccess: is that the former defines
> a script rendering callback to be executed in Seaside and the latter is a
> jQuery ajax option to define a javascript callback (to be executed
> client-side) when the ajax call finishes successfully.
>
> The onSuccess parameter will accept both a string or a JSScript instance
> as a Javascript to be executed
> In a #script callback, the block argument is a JSScript instance already.
> The script concatenation operator '<<' expects another JSScript instance
> (e.g. a JSStream instance). If you concatenate a Smalltalk string with a
> JSScript instance, the Smalltalk string is serialized as a Javascript
> string on the JSScript instance.
>
> cheers
> Johan
>
> On 06 Jul 2014, at 01:06, carlo.t <snoobabk at yahoo.ie> wrote:
>
> > Hi
> >
> > I thick #script: does not work because this is a separate ajax call where
> > the reference to 'this' is not known and is not the row you expect.
> > #script would work if you reference a valid DOM id for the row e.g.
> >                                       html checkbox
> >                                               onClick: (html jQuery ajax
> serializeThisWithHidden;
> >                                                               script:
> [:s | s
> >
>       << (s jQuery: #idForRow) addClass: 'selectedRow']);
> >
> > #onSuccess is probably triggering a callback where the reference to
> 'this'
> > is valid and so the following line will work:
> >       (html jQuery this closest: 'tr') addClass: 'selectedRow'
> >
> > I'm a javascript newbie too but thats what I think is going on.
> >
> > Cheers
> > Carlo
> >
> >
> >
> >
> > --
> > View this message in context:
> http://forum.world.st/Checkbox-and-AJAX-tp4731692p4766717.html
> > Sent from the Seaside General mailing list archive at Nabble.com.
> > _______________________________________________
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>
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>



-- 
Mariano
http://marianopeck.wordpress.com
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