add_action('init', 'custom_switch_currency');
function custom_switch_currency() {
if(isset($_GET['currency']) && !empty($_GET['currency'])) {
$currency = sanitize_text_field($_GET['currency']);
// Ensure the currency code is valid and exists in your WooCommerce settings
if(in_array($currency, get_woocommerce_currencies())) {
// Use WooCommerce Multilingual or WPML API to switch the currency
do_action('wcml_switch_currency', $currency);
// Note: This is a simplified approach. You might need to handle sessions or redirect.
}
}
}
But this code is not tested so I can't say whether it would work, such coding not included within out support scope. That being said, please consult our https://wpml.org/contractors/ for further help.
Another approach may be ( this is not tested and requires further coding and checks) something like the following:
1. **Detect Query String and Set Currency**: Use WordPress hooks to detect the `currency` parameter in the URL and set the user's session or cookie to reflect the chosen currency.
add_action('init', 'custom_set_currency_from_url');
function custom_set_currency_from_url() {
if(isset($_GET['currency']) && !empty($_GET['currency'])) {
// Assuming 'currency' is your query parameter
$currency = sanitize_text_field($_GET['currency']);
// Set this currency to your currency switcher/session
// This will depend on how your currency switching functionality is implemented
}
}
2. **Ensure Currency Parameter Persists Across Pages**: You'll need to ensure that once a user selects a currency, this preference is carried across all pages they visit. This might involve adjusting links site-wide to append the `currency` query parameter dynamically.
For WooCommerce or similar, you might hook into URL generation functions to append the query string:
add_filter('post_type_link', 'append_currency_query_string', 10, 2);
add_filter('page_link', 'append_currency_query_string', 10, 2);
// Add more filters as needed for custom post types, taxonomy terms, etc.
function append_currency_query_string($url, $post) {
if (!is_admin()) {
// Check if the currency is set in session/cookie
$currency = isset($_SESSION['currency']) ? $_SESSION['currency'] : 'USD'; // Default to USD if not set
// Append currency to URL
$url = add_query_arg('currency', $currency, $url);
}
return $url;
}
3. **WPML Language Switcher Adjustment**: If you're using WPML's language switcher, you might need to customize it to ensure the currency parameter is retained when switching languages. This could involve filtering the language switcher's URLs through the `wpml_ls_language_url` filter.
add_filter('wpml_ls_language_url', function ($url, $language_code) {
// Append the currency query parameter to the URL
$currency = isset($_SESSION['currency']) ? $_SESSION['currency'] : 'USD';
return add_query_arg('currency', $currency, $url);
}, 10, 2);
These code snippets can be added to your theme's `functions.php` file or ideally, in a custom plugin.
But note that this is not a tested and may not work as expected or at all - you need to check with our https://wpml.org/contractors/ to assist with this because this is not within our support scope, hopefully this will give you some guidelines on how this may be achieved.
many thanks, this is getting close to what I needed , just one thing short
I was able to make all links attached with `?currency=USD`
now t seems only problem right now is how to make the language switcher to update the URL
```
add_filter('wpml_ls_language_url', function ($url, $language_code) {
// Append the currency query parameter to the URL
$currency = isset($_SESSION['currency']) ? $_SESSION['currency'] : 'USD';
return add_query_arg('currency', $currency, $url);
}, 10, 2);
```
this one seems doesn't change the URL
for example when I open the page as USD currency with ?currency=USD , when I do swtich to EUR by switcher , despite the page is now displaying EUR, but the URL is still on `?currency=EUR` , I think this is the last thing I need to get over with.
hmmm, by logging out the variable I can see it should returns URL with new currency like /product/belt/?currency=EUR when I go from USD to EUR , but the browser seems still stick to =USD qs
so last thing I need now , is seems to make the URL change accordingly when switch currency
alright , thanks anyway , it's kind of annoying just one step away
you are already half-way there , this feature will be very useful for cache plugin compatibility though.
I do strongly suggest you to implement it , since you got the language query string already , it shouldn't be too much work to get currency query string as well.
Languages: English (English )German (Deutsch )French (Français )
Timezone: Europe/Zagreb (GMT+02:00)
We always tend to help clients as much as possible, but to the limits of our knowledge and support policies. This is where contractors step in.
Also, as for the feature it may be implemented into one of the future versions, however we take every feature request into consideration based on the forum cases, etc.
This ticket is now closed. If you're a WPML client and need related help, please open a new support ticket.
