I cannot over write the text for the months names in tx_news list view

Question

My installation: TYPO3 12.4.11
News 11.4.1
PHP 8.2.15

I want to overwrite the months names in this language file: typo3conf/l10n/da/news/Resources/Private/Language/da.locallang.xlf

For example, I try to change January to Jannewaris to create: 01 Jannewaris 2024 for the news item date.
No matter what I try I cannot do it.

I have this in my setup, it does work:
plugin.tx_news.\_LOCAL_LANG.da.dateFormat = %d %B -%Y.
It spells the name of the month (01 January 2024) instead of displaying 01.01.2024, but I want to change the spelling from January with Jannewaris.

For example I try to change month.01
I change the name for January in the file: typo3conf/l10n/da/news/Resources/Private/Language/da.locallang.xlf as shown below.

<trans-unit id="month.01" xml:space="preserve" approved="yes">
   <source>January</source>
   <target state="final">Jannewaris</target>
</trans-unit>

The above code does not change January to Jannewaris, the correct spelling for danish is still shown.
I use the below block of code in: Partials/List/list.html

<time itemprop="datePublished" 
      class="event-fa-time" 
      datetime="{f:format.date(date:newsItem.datetime, format:'Y-m-d')}"> 
   <f:format.date format="{f:translate(key:'dateFormat')}" >{newsItem.datetime}</f:format.date>
</time>

In TS Setup I have tried using this script:
plugin.tx_news.\_LOCAL_LANG.da.month.01 = Jannewaris

It does not have any effect either. I still cannot change the text to Jannewaris

How do I make a change to the spelling of the month?

Where does TYPO3 / tx_news get the month names from?

If I remove the file typo3conf/l10n/da/news/Resources/Private/Language/da.locallang.xlf the months are still displayed on the front-end for the da language.

Can anyone tell me how is it done? I have no idea how / where Typo3 is generating the month names?

Thanks.

Answer 1

if you use the PHP function strftime() (which is the case if you use a format like %d %B -%Y) the name of the month comes from the operating system. To get the matching spelling you need to configure the matching locale setting.
Get the list of available locales by locale -a from the command line.

If you want to use your language strings you need to 'translate' it on your own:
Get the number of the month and use it for the translation-key:
<f:translate key="month.{f:format.date(format:'m', base:newsItem.datetime)}" />

---

EDIT:

you could define a partial/section for it:

<f:section name="myFormattedDate">
  <f:comment> 
    expected argument: 'datePar'
    white space formating may need rework
    and the translate VH may need `extensionName` or full path in the `key`
  </f:comment>

  <f:format.date format="d" base="{datePar}" /> 
  <f:translate key="month.{f:format.date(format:'m', base:datePar)}" /> 
  <f:format.date format="Y" base="{datePar}" /> 
</f:section>