Last Updated Date on a Specific Category

Hi there,

Is this what you are using currently?
https://docs.generatepress.com/article/show-the-updated-post-date/

If so I think you need to add the category class in the body tag. Maybe something like this:
https://philipnewcomer.net/2012/10/add-post-categories-to-the-body-class-in-wordpress/

Then we should be able to adjust the CSS if you can link/guide me to an example post.

Let me know :)

Hi Leo,

It would help if I posted the function! Doh!

function show_last_modified_date( $content ) {
$original_time = get_the_time('U');
$modified_time = get_the_modified_time('U');
if ($modified_time >= $original_time + 86400) {
$updated_time = get_the_modified_time('h:i a');
$updated_day = get_the_modified_time('jS F, Y');
$modified_content .= '<p class="last-modified">This information was updated on '. $updated_day . '</p>';
}
$modified_content .= $content;
return $modified_content;
}
add_filter( 'the_content', 'show_last_modified_date' );

Try this instead:

function show_last_modified_date( $content ) {
    if ( ! in_category( 1139 ) ) {
        return $content;
    }

    $original_time = get_the_time('U');
    $modified_time = get_the_modified_time('U');
    $modified_content = '';

    if ($modified_time >= $original_time + 86400) {
        $updated_time = get_the_modified_time('h:i a');
        $updated_day = get_the_modified_time('jS F, Y');
        $modified_content .= '<p class="last-modified">This information was updated on '. $updated_day . '</p>';
    }

    $modified_content .= $content;
    return $modified_content;
}
add_filter( 'the_content', 'show_last_modified_date' );

Hi Tom,

I get the following error notice at the top of the page:

Notice: Undefined variable: modified_content in /dom7210/wp-content/plugins/code-snippets/php/snippet-ops.php(361) : eval()'d code on line 15

The code on line 15 is:
$modified_content .= $content;

Looks like an issue with the original code. I just adjusted it above.