[Seaside] Rendering Callbacks during an Ajax callback
jtuchel at objektfabrik.de
jtuchel at objektfabrik.de
Fri Feb 10 16:26:12 UTC 2017
Dear Seasiders,
I must bee overlooking something obvious.
I want to redraw a listItem in and unorderedList (it is a boostrap
.list-item .row, but that doesn't really matter) in an Ajax callback.
This listItem contains normal anchors with callbacks.
The ajax call is initiated in a javascript function, not rendered by
Seaside. This call to ajax does the following;
$.ajax( ... ).done(function(result) {
row.replaceWith(result);});
where row is a jquery that contains the listItem. The rerendering works
very well and all seems good.
Except for one little detail: the callbacks rendered in the AJax
callback are re-numbered from 1 and once you click on oneof the
re-rendered link it is a nice surprise what method might get called on
the server. I guess I am messing with the _s and _k parameters in my
caööback method.
So here is my callback method which answers the re-rendered listItem/row:
changeSomeStuffOnTheServerAndRedraw | rahmenElementId fields req betrag planElement conv wrapper ctx
contKey row resp | ctx := self requestContext. req := ctx
request. resp := ctx response. fields := req fields.
"Some boring business stuff which works like a charm, including
finding the right business objects, changing them, commits in Glorp and
whatnot"
"Re-render the row"
row := self findTheListItemComponentForRerendering.
resp status: 200; contentType: (WAMimeType
textHtml charset: ctx handler charSet); nextPutAll: (
(self rendererClass builder)"**->" actionUrl: (ctx
session actionUrlForKey: contKey); "I also tried leaving this out -->
even worse" fullDocument: false;
render: [:html | html render: row ])
I think the problem is either the fact that I shouldn't be using the
requestContext of the Ajax callback, or the actionUrl: part is wrong.
The rows not re-rendered still work like a charm.
You can see in the attached picture that both a not-re-rendered row and
the re-rendered row point to the same 's anchors point to the same url
with identical _s and _k parameters, but thesecond one is the
re-rendered and its callback number is 1 instead of 51, which it had
before re-rendering:
If I use the URL and replace the 1 with 51, The correct callback is
being called, the initial callback is still registered.
I wouldn't mind if the re-render registered another Callback, even if
that means I waste memory, but it seems I am registering the new
callbacks in some registry that's new for the ajax callback.... (I am
confused)
Any hints? Ideas? How can I make sure the anchors in that redrawn
listItem find their callback blocks on the server?
Thank you in advance
Joachim
--
-----------------------------------------------------------------------
Objektfabrik Joachim Tuchel mailto:jtuchel at objektfabrik.de
Fliederweg 1 http://www.objektfabrik.de
D-71640 Ludwigsburg http://joachimtuchel.wordpress.com
Telefon: +49 7141 56 10 86 0 Fax: +49 7141 56 10 86 1
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