Help with gettex

Hi,

To clarify: Should the translation be dynamic? Meaning are the translations depending on which page you are on? (EN page, FR page, JP page, etc?)

If not, you can simply re-write "Published on: and "Last Updated on:" within the code into your text literal translation.

Example #1: translating "Published on:" to "Veröffentlicht auf:"(German).

Change this:
<time class="entry-date published" datetime="%1$s" itemprop="datePublished">Published on: %2$s</time>

to

<time class="entry-date published" datetime="%1$s" itemprop="datePublished">Veröffentlicht auf: %2$s</time>

Example #2: translating "Last Updated on:" to "Huling nai-update noong:".(Filipino)
Change this line:
<time class="entry-date updated-date" datetime="%3$s" itemprop="dateModified">Last Updated on: %4$s</time>

to this line:
<time class="entry-date updated-date" datetime="%3$s" itemprop="dateModified">Huling nai-update noong: %4$s</time>

We're basically just replacing the default English string within the code to our preferred translated text.

Thank yuo very much Elvin.
Yes, the translation must be dynamic.
WPML support gave me two links, but as I said I'm a dummy :-)
They suggest to have a look here:

https://wpml.org/documentation/support/enabling-text-translation-for-themes-not-compatible-with-wpml/

https://wpml.org/faq/getting-string-translation-to-work/

Thanks again.

Ah right of course.

Try this:

add_filter( 'generate_post_date_output', function( $output, $time_string ) {
    $time_string = '<time class="entry-date published" datetime="%1$s" itemprop="datePublished">%2$s</time>';

    if ( get_the_date() !== get_the_modified_date() ) {
        $time_string = '<time class="entry-date published" datetime="%1$s" itemprop="datePublished">%5$s %2$s</time> | <time class="entry-date updated-date" datetime="%3$s" itemprop="dateModified">%6$s %4$s</time>';
    }

    $time_string = sprintf( $time_string,
        esc_attr( get_the_date( 'c' ) ),
        esc_html( get_the_date() ),
        esc_attr( get_the_modified_date( 'c' ) ),
        esc_html( get_the_modified_date() ),
		_e( 'Published on:', 'generatepress' ),
		_e( 'Last Updated on:', 'generatepress' )
    );

    return sprintf ( '<span class="posted-on">%s</span> ',
        $time_string
    );
}, 10, 2 );

And here's a sample PHP to test this code. We're basically testing if the string translate with gettext().

add_filter( 'gettext', function( $text ) {
    if ( 'Published on:' === $text ) {
        $text = 'Your published on translation';
    }

    if ( 'Last Updated on:' === $text ) {
        $text = 'Your last updated on translation';
    }

    return $text;
} );

Thanks a lot!
It works almost well. The only thing is that the two sentences Published on: (Publicato il) and Last update on: (Aggiornato il:) are on the same line, consecutive.

Please have a look here:
Guide Dolomiti

Thanks for your patience :-)
Enrico

Ah that's right my bad. I've misread a few parts.

Try this one.

add_filter( 'generate_post_date_output', function( $output, $time_string ) {
    $time_string = '<time class="entry-date published" datetime="%1$s" itemprop="datePublished">%2$s</time>';

    if ( get_the_date() !== get_the_modified_date() ) {
        $time_string = '<time class="entry-date published" datetime="%1$s" itemprop="datePublished">%2$s</time> | <time class="entry-date updated-date" datetime="%3$s" itemprop="dateModified">%4$s</time>';
    }

    $time_string = sprintf( $time_string,
        esc_attr( get_the_date( 'c' ) ),
        esc_html__( 'Published on:', 'generatepress' ).' '.esc_html( get_the_date() ),
        esc_attr( get_the_modified_date( 'c' ) ),
        esc_html__( 'Last Updated on:', 'generatepress' ).' '.esc_html( get_the_modified_date() )
    );

    return sprintf ( '<span class="posted-on">%s</span> ',
        $time_string
    );
}, 10, 2 );

Thank you very very much!
It works perfectly.
Grazie.
Enrico

Glad it works for you. No problem. :D