Polylang [Development] Preferred Language for WP Backend

Hi!

On backend you have 3 languages available.

1. The language used to display the interface is accessible with get_locale() as usual.

2. The language selected in the admin language filter is accessible with pll_current_language(). This function returns false when the language switcher display all languages.

3. A 3rd language is internally used by Polylang: PLL()->pref_lang. This one is a PLL_Language object. It is the same as (2) except that when (2) is false, it is equal to the default language. This language is the “preferred language” and is assigned to new posts.

Thanks for the quick reply.

I tried the information you provided, but I wasn’t able to get it to work. The pll_current_language() returns an empty variable in the WP dashboard.

I’d like to access the information in this metabox: https://imgur.com/13LDafO and then output it into a conditional for another metabox.

I’m building a CMB2 show_on_cb, but I’d like to use the Polylang data instead of CMB2 data.

Here’s an example of the CMB2 show_on_cb that I’m using: https://github.com/WebDevStudios/CMB2/wiki/Adding-your-own-show_on-filters#example-using-the-show_on_cb-to-limit-the-display-of-a-metabox-unless-metadata-exists

Thanks!

If you want the language of the current post being edited, then that’s different. You can access it with:

global $post_ID;
$lang = pll_get_post_language( $post_ID );

Of course you will need js if you want to react to the language modification as currently done by Polylang to change the category list…

Brilliant, worked perfectly. Thank you for all your help.

For others, here’s the code I ended up using:

function cmb_only_show_for_spanish( $cmb ) {
    global $post_ID;
    if (function_exists('pll_get_post_language')) {
        $lang = pll_get_post_language( $post_ID );
        // Only show if status is 'es'
        return 'es' === $lang;
    }
}