[5.0] Check if the value consist with id:alias, extract the id only

[Fedik]

Pull Request for Issue #42087 .

Summary of Changes

The language association value stored as id:alias, however in j4 it was cast to int

joomla-cms/administrator/components/com_content/src/Field/Modal/ArticleField.php

Line 61 in 1e7527b

$value = (int) $this->value ?: '';

that was not obvious change, but that affects evrything.
I have made it a bit more explicit in the afected fields

Testing Instructions

Please follow #42087

Actual result BEFORE applying this Pull Request

An error

Expected result AFTER applying this Pull Request

No error

Link to documentations

Please select:

• Documentation link for docs.joomla.org:
• No documentation changes for docs.joomla.org needed
• Pull Request link for manual.joomla.org:
• No documentation changes for manual.joomla.org needed

Reference:

• [5.0] Generic ModalSelect field #40462

[alikon]

I have tested this item ✅ successfully on 45f33d2

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_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/42096.}

[chmst]

I have tested this item ✅ successfully on 45f33d2

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_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/42096.}

[bembelimen]

Thank you for the PR and the tests.

[richard67]

I just wanted to mark my successful test result, but you were faster :-)

I've tested the side-by-side views (associations) for menu items as well, and also for not associated articles and menu items, all that works.

What remains is the issue I have commented here #42087 (comment) , that the "Clear" button doesn't do anything in the associations side-by-side view. I will later created a new issue for that (if there is none yet).

[chmst]

Got this error for the Clear button

[Fedik]

I made PR for Clear button #42098