Set Translation in functions.php Theme file

  • sam0kc

    (@sam0kc)


    4 years, 5 months ago

    Hello everybody,

    I’m not sure if I am in the good section of the forum, but here’s the thing: I am developping my own WP theme for a website that needs to be available in 2 languages.

    I have read several pages (in the Handbook for Devs, in this forum, in the web…), but I haven’t found what I am looking for. I started with what is written in here:

    https://developer.ww.wp.xz.cn/themes/functionality/internationalization/

    But, let’s be honest, to set his favourite language, the users of my website won’t be changing the wp-config.php by themselves…

    So far, I have been thinking of 2 ways of doing it. Let’s call them “plan A” and “plan B”.

    Plan A consist of:
    1) the user sets his favourite language thanks to a <select>
    2) the page is directly displayed with the good translations (with a javascript function), without reloading
    3) the language preference is set in a cookie so when the user comes later, his favourite language is automatically set

    This is the best UX I can think of. Yet I haven’t found any documentation about that. So I’ve come to a plan B :

    1) the user sets his favourite language thanks to a <select>
    2) in a JS file, the preference is set in a cookie, then the page reloads automatically
    3) Thanks to the cookie, a PHP function (in the functions.php file of the theme) set the favourite language

    In the best case, I’ll prefer the plan A, but the plan B is totally acceptable. What I need is, for both cases, how to “say” to WordPress “The language to be show is…”, or in another term, which JS (or PHP) function should I use (in my JS file, or functions.php respectively…)?

    Thank you in advance for your help.. 🙂

    • This topic was modified 4 years, 5 months ago by Jan Dembowski.
Viewing 4 replies - 1 through 4 (of 4 total)
  • Topher

    (@topher1kenobe)

    4 years, 5 months ago

    This post should help: https://translatepress.com/change-wordpress-language/

    I don’t think you’ll need to build anything.

    Thread Starter sam0kc

    (@sam0kc)

    4 years, 5 months ago

    It actually doesn’t help, because as said in the first post, the visitors of the website won’t go in the administration panel to set their preferred language

    Thread Starter sam0kc

    (@sam0kc)

    4 years, 5 months ago

    To precise something: the translations are handled with .po files, in the /language folder of the homemade theme…

    Thread Starter sam0kc

    (@sam0kc)

    4 years, 5 months ago

    Okay, I found a solution. It’s actually my “plan B”.

    With a <select name=”langageSelect”> in the PHP file, here is the content of the JS file:

    document.querySelector('select[name=languageSelect]').onchange = setCookieAndReload;
function setCookieAndReload() {
	MsSepPreferredLanguage = document.querySelector('select[name=languageSelect]').value;
	document.cookie = "preferredLanguage="+MsSepPreferredLanguage;
	window.location.reload(true);
}

    This is gonna set a cookie to remind the language preferences of the user..

    … and added in the functions.php file:

    function wpse_52419_change_language( $locale )
{
    return $_COOKIE['preferredLanguage'];
}
add_filter( 'locale', 'wpse_52419_change_language' );
Viewing 4 replies - 1 through 4 (of 4 total)

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