NOT change the language depending on the content

This solution provides by Syllogic consultant doesn’t work anymore.

Not sure that other users have proposed another solution.

The Syllogoc solution doesn’t work anymore but it’s possible to adapt it.
here is what I done :

add_filter('pre_get_posts', 'get_default_language_posts');

function get_default_language_posts($query)
{
    if ($query->is_main_query() && isset($query->query['lang']) && !is_admin()) {
        $terms = get_terms('post_translations'); //polylang stores translated post IDs in a serialized array in the description field of this custom taxonomy
        $curLang = $query->query['lang']; //current selected language requested on the broswer
        $otherLang = $curLang === "fr" ? "en" : "fr";
        $filterPostIDs = array();
        foreach ($terms as $translation) {
            $transPost = unserialize($translation->description);
            $filterPostIDs[] = $transPost[$otherLang];
        }
        $query->set('lang',  $curLang. ',' . $otherLang);  //select both default and current language post
        $query->set('post__not_in', $filterPostIDs); // remove the duplicate post
    }
    return $query;
}

But my problem is not to display post in other language. I want the language is not associated with the content but only the choice of the user.

I have the same problem and have tested the approach. But it doesn’t work for me.

Are you sure it’s the same problem ?
I want to deactivate the auto-language-switcher-depending-on-content of polylang and only switch language by the language switcher.

ah ok sorry, my mistake. Currently, I’m looking for a solution where the default language is shown whenever no translation is available. And here no working solution seems to exist :-/

It’s work for me so it can work for you. But with my solution you’ll have the same problem than me : when the user will go to the “foreign” post, the language will switch (menu, static translations etc)

May be I found a workaround but not sure if this is the best solution or create bugs.
the workaround :
– in polylang settings I choose URL modifications>The language is set from content
– in the plugin polylang>frontend>choose-lang-content.php, find the “get_language_from_content()” function and comment that :

elseif ((is_single() || is_page() || (is_attachment() && $this->options['media_support'])) && ( ($var = get_queried_object_id()) || ($var = get_query_var('p')) || ($var = get_query_var('page_id')) || ($var = get_query_var('attachment_id')) ))
$lang = $this->model->get_post_language($var);

– in the end you have to use your own switcher. Here is mine (based on the Syllogic one):

function sy_polylang_switcher()
{
    $translations = array();
    $translations = pll_the_languages(array('raw' => 1));
    foreach ($translations as $key => $language) {
        if (!$language['current_lang']) {
            $alternate = $language;
            break;
        }
    }
    $actual_link = "https://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
    if ($alternate["no_translation"]) {
        $menu = '<a hreflang="'.$alternate['slug'].'" href="' . $actual_link . '&lang=' . $alternate['slug'] . '">' . $alternate['name'] . '</a></li>';
    } elseif (is_home() || is_shop()) {
        $menu = '<a hreflang="'.$alternate['slug'].'" href="' . $alternate['url'] . '">' . $alternate['name'] . '</a></li>';
    } else {
        $menu = '<a hreflang="'.$alternate['slug'].'" href="' . $alternate['url'] . '&lang=' . $alternate['slug'] . '">' . $alternate['name'] . '</a></li>';
    }
    $menu .= '</ul>';
    echo '<div id="polylang_switcher">' . $menu . '</div>';
}

put this code in functions.php and call the switcher in your theme. <?php sy_polylang_switcher(); ?>

Not sure it’s perfect but seems to work. I come back here if I saw problems.

Thanks for the code tolima. To get your code to work for me I had to replace the & symbols with the ? symbol.

I also had an issue where the code would stack up and eventually would end up with something along the lines of ?lang=en?lang=pt?lang=pt?lang=pt which would keep growing as I clicked.

To solve this I added this after your $actual_link line.

$actual_link = substr($actual_link, 0, strpos($actual_link, "?"));

So my code ended up like this:

function sy_polylang_switcher()
		{
		    $translations = array();
		    $translations = pll_the_languages(array('raw' => 1));
		    foreach ($translations as $key => $language) {
		        if (!$language['current_lang']) {
		            $alternate = $language;
		            break;
		        }
		    }
		    $actual_link = "https://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
				$actual_link = substr($actual_link, 0, strpos($actual_link, "?"));
		    if ($alternate["no_translation"]) {
		        $menu = '<a hreflang="'.$alternate['slug'].'" href="' . $actual_link . '?lang=' . $alternate['slug'] . '">' . $alternate['name'] . '</a></li>';
		    } elseif (is_home() || is_shop()) {
		        $menu = '<a hreflang="'.$alternate['slug'].'" href="' . $alternate['url'] . '">' . $alternate['name'] . '</a></li>';
		    } else {
		        $menu = '<a hreflang="'.$alternate['slug'].'" href="' . $alternate['url'] . '?lang=' . $alternate['slug'] . '">' . $alternate['name'] . '</a></li>';
		    }
		    $menu .= '</ul>';
		    echo '<div id="polylang_switcher">' . $menu . '</div>';
		}

I’m not sure if what I have done is correct but it’s working for me, so I thought I’d post it here incase someone has the same issue as me.