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<div class="moz-cite-prefix">Unfortunately, this one-argument block
idea doesn't work. If I register the Ajax callback with an
argument, the callback method will receive nil as parameter....<br>
<br>
<br>
<br>
Am 11.02.17 um 09:32 schrieb <a class="moz-txt-link-abbreviated" href="mailto:jtuchel@objektfabrik.de">jtuchel@objektfabrik.de</a>:<br>
</div>
<blockquote
cite="mid:26a82fe8-5532-2415-d7fb-24cce1893af5@objektfabrik.de"
type="cite">
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<div class="moz-cite-prefix">Hi Johan,<br>
<br>
first of all: thanks for your time!<br>
<br>
<br>
> I’m a bit confused why you are rendering in this way in
your callback method. <br>
<br>
Maybe the answer wouldn't really be something I'd like to hear
;-)<br>
<br>
<br>
The method doesn't have a parameter, because the ajax call is
initiated by hand-written javascript code. One reason is that
the list can be very long (up to 2000 list items) and I only
want to install one click handler on the document using <br>
<br>
$(document).on("click",".mylistItemClass", function() { ...
$.ajax() ...}).done();<br>
<br>
etc. etc.<br>
<br>
So I register only one callback in updateRoot: and store the
number in an instVar<br>
<br>
<pre>updateRoot:
checkboxenCallback := html context callbacks store: (JSAjaxCallback on: [self einOderAusblendenCheckbox]).</pre>
<br>
then, in renderContentOn; I do: <br>
<br>
<br>
<pre>renderContentOn:
html document addLoadScript: (
'$(document).on("change", ".ein-aus", function(evt) {
evt.preventDefault();
var target = $(evt.target);
var row = target.parents(".row"); </pre>
<pre> $.ajax({
url: %1+"&pk="+ rahmenId ,
})</pre>
<pre> .fail(function(res) {alert(res.responseText)})</pre>
<pre> .done(function(result) {</pre>
row.replaceWith(result);
}});
<pre> })'</pre>
<pre> bindWith: (html actionUrl copy addField: checkboxenCallback) asString sstAsQuotedString)</pre>
<br>
<br>
So I guess you are asking the right question: why do I build up
a new context/builder... ? I never tried, but maybe I should
just register a one argument-block as callback and hope for some
Seaside magic?<br>
<br>
I will try that immediately (just occured to me while typing
this message...)<br>
<br>
<br>
Joachim<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
Am 11.02.17 um 09:11 schrieb Johan Brichau:<br>
</div>
<blockquote
cite="mid:A342A5C6-937C-497F-B1BF-DDD927B62D19@inceptive.be"
type="cite">
<meta http-equiv="Content-Type" content="text/html;
charset=utf-8">
Hi Joachim,
<div class=""><br class="">
</div>
<div class="">I’m a bit confused why you are rendering in this
way in your callback method. </div>
<div class="">Why are you doing this differently than in any
other Seaside rendering method?</div>
<div class=""><br class="">
</div>
<div class="">Since you are instantiating a new builder, it is
going to create it’s own rendercontext, hence it’s own
registry for callbacks.</div>
<div class="">I have not deeply investigated the result of your
code snippet, but this seems to me why you are seeing that
callback numbers are restarted.</div>
<div class=""><br class="">
</div>
<div class="">Now, if you re-render list-item with a callback on
it, Seaside will indeed need to register a new callback. The
memory overhead should be limited to the registry dictionary
entry and a WASeasideCallback instance, however, since the
block and it’s lexical context object will already exist
before rendering. So… I would not worry about memory overhead.</div>
<div class=""><br class="">
</div>
<div class="">If you are doing this because you are doing
hand-written ajax calls: what I tend to do is generate a
jQuery-Seaside ajax callback and assign this to a Javascript
variable, which I can use from the hand-written JS. Of course,
there’s variations on this other than global-variable
assignment but that’s all Javascript fiddling.</div>
<div class=""><br class="">
</div>
<div class="">So, before I try to dig deeper in your problem:
why is this method not called:
"changeSomeStuffOnTheServerAndRedrawOn: html” :) ?</div>
<div class=""><br class="">
</div>
<div class="">Johan</div>
<div class=""><br class="">
</div>
<div class=""><br class="">
</div>
<div class="">
<div>
<blockquote type="cite" class="">
<div class="">On 10 Feb 2017, at 17:26, <a
moz-do-not-send="true"
href="mailto:jtuchel@objektfabrik.de" class="">jtuchel@objektfabrik.de</a>
wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
<meta http-equiv="content-type" content="text/html;
charset=utf-8" class="">
<div bgcolor="#FFFFFF" text="#000000" class=""> Dear
Seasiders,<br class="">
<p class="">I must bee overlooking something obvious.
<br class="">
</p>
<p class="">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. <br
class="">
This listItem contains normal anchors with
callbacks. <br class="">
</p>
<p class="">The ajax call is initiated in a javascript
function, not rendered by Seaside. This call to ajax
does the following;</p>
<p class=""><br class="">
</p>
<p class="">$.ajax( ... ).done(function(result) {<br
class="">
row.replaceWith(result);});</p>
<p class=""> <br class="">
</p>
<p class="">where row is a jquery that contains the
listItem. The rerendering works very well and all
seems good.</p>
<p class="">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.</p>
<p class="">So here is my callback method which
answers the re-rendered listItem/row:</p>
<p class=""><br class="">
</p>
<pre class="">changeSomeStuffOnTheServerAndRedraw<tt class="">
</tt><tt class="">
</tt><tt class=""> | rahmenElementId fields req betrag planElement conv wrapper ctx contKey row resp |</tt><tt class="">
</tt><tt class="">
</tt><tt class="">
</tt><tt class=""> ctx := self requestContext.</tt><tt class="">
</tt><tt class=""> req := ctx request.</tt><tt class="">
</tt><tt class=""> resp := ctx response.</tt><tt class="">
</tt><tt class=""> fields := req fields.</tt><tt class="">
"Some boring business stuff which works like a charm, including finding the right business objects, changing them, commits in Glorp and whatnot"</tt><tt class="">
</tt></pre>
<tt class=""> "Re-render the row"</tt><br
class="">
<pre class=""><tt class=""> row := self findTheListItemComponentForRerendering.</tt><tt class="">
</tt><tt class="">
</tt><tt class=""> resp</tt><tt class="">
</tt><tt class=""> status: 200;</tt><tt class="">
</tt><tt class=""> contentType: (WAMimeType textHtml charset: ctx handler charSet);</tt><tt class="">
</tt><tt class=""> nextPutAll: (</tt><tt class="">
</tt><tt class=""> (self rendererClass builder)</tt><tt class="">
</tt><tt class="">"**->" actionUrl: (ctx session actionUrlForKey: contKey); "I also tried leaving this out --> even worse"</tt><tt class="">
</tt><tt class=""> fullDocument: false;</tt><tt class="">
</tt><tt class=""> render: [:html |</tt><tt class="">
</tt><tt class=""> html render: row ])</tt><tt class="">
</tt><tt class="">
</tt></pre>
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.<br class="">
The rows not re-rendered still work like a charm.<br
class="">
<br class="">
<br class="">
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:<br class="">
<br class="">
<span id="cid:part1.AC5BBD04.635E1A94@objektfabrik.de"><ifioakbcdojcdbmm.png></span><br
class="">
<br class="">
If I use the URL and replace the 1 with 51, The
correct callback is being called, the initial callback
is still registered. <br class="">
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)<br class="">
<br class="">
Any hints? Ideas? How can I make sure the anchors in
that redrawn listItem find their callback blocks on
the server?<br class="">
<br class="">
<br class="">
Thank you in advance<br class="">
<br class="">
Joachim <br class="">
<br class="">
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