Similar problem with 3.8 (upgraded from a clean 3.7.5 install)

Plugin is executed twice for a page, resulting in duplicate script entries.
(occurs with either routing mode)

Possibly related, with operations being triggered twice?

it is expected behavior,
$doc->addScriptDeclaration() called twice, so your script added twice.

It always worked like that, and do not relate specifically to 3.8

@Fedik is this "calling twice" same Reason for #18016?

It is different.

In current issue, @uGE70 made:

Publish at least two instances of the custom module

so the module loaded twice and so his code called twice. that is expected.

@Fedik Sorry, I changed it for the sake of reproducing the issue and it was an error to do so for the behavior you're mentioning, but I have really an issue with a datatables script loaded twice (that's why I remarked it, datatables scripts can't be instanced twice). I will try to clarify.

@uGE70
It would be the same issue, only when you have ONE instance of the module, but your code added twice.

but then need more detailed info, how to reproduce it

@Fedik I have several scripts into one instance of modules called twice after the Joomla 3.8 upgrade. My code is calling them once. What I did wrong was to assume my report could reproduce the issue with the custom module example. Sorry for that. I will try to clarify the issue.

Ok, I updated my report. The error does happen if there's one instance of the module inside an article. When I put my modules in the template positions instead of the content of the articles, the scripts are called once as they should. Thanks for your patience.

i have a similar problem with jux-timeline module,A code like this gets added to head script several times, when using {loadposition } in content. Using the module in other modul-position is ok.

$document->addScriptDeclaration('
jQuery(document).ready(function($){
$("#jux_tl'.$module->id.'").juxtimeline();
});
');

Full of Hope i tested:
#18066
Not working...

Reverted back to Joomla 3.7.5 modul is working.

n9iels commented 3 days ago
@Bakual is right. Unless there is another point where onContentPrepare is called, this event won't be fired if the fields plugin is disabled

shows expected result in 3.8.0+#18066

@mdmamde didn't get your Comments: First you post "#18066 not working", above "shows expected result in 3.8.0" > can you please explain?

CASE1.)Joomla 3.8.0+#18066+fieldsplugin enabled=module yuxtimeline does not work(multiple scripts in head from plugin)
CASE2.)Joomla 3.8.0+#18066+fieldsplugin disabled=module yuxtimeline works (only single js script in head per module-id)

CASE3.)Also i tried this scenario:
Joomla 3.8.0+( without changes #18066)+fieldsplugin disabled=does not work, multiple scripts from module in head

CASE4.) Joomla 3.7.5=module works

I tested the fix #18066 and it solved my issue. Thanks for your work.

@mdmamde please open an new Issue as the original Issue is solved as stated above so this Issue is closed.

Set to "closed" on behalf of @franz-wohlkoenig by The JTracker Application at issues.joomla.org/joomla-cms/17999