Tell us what you are trying to do?
I am writing some custom functionality that uses the categories set on a particular product to alter how the product is displayed. Specifically I use get_the_terms($post->ID, 'product_cat') so I can go through the terms and determine what categories the product belongs to.
Looking at the product in english, the slug for the term would be something like 'bags' or 'fabric' etc. When I am looking at the product in a different language, the term is of course translated and is not 'bags' but something like 'sacs' (fr) or 'τσάντες' (el).
Is there a way to correlate all the terms that are semantically the same? In other words, If I have the term 'bags' in english, how can I get all other terms that are its translations?
Is there any documentation that you are following?
No.
I can get the base language product ID by passing 'en' to this:
$org_id = apply_filters( 'wpml_object_id', $product->get_id(), 'product', false, 'en');
gets me the terms from english product and I can then check their slugs for what I need.
ISSUE:
IWPML > Make themes work multilingual > Adjust IDs for multilingual functionality, must be OFF, otherwise get_the_terms() will return terms for the supplied id in the current language.
If the option:
WPML > Make themes work multilingual > Adjust IDs for multilingual functionality
is ON, is there a way to make get_the_terms(ID) to return the terms for the supplied object ID and not for the one that corresponds to the currently selected language?
I am quite not clear whether you want to display all possible translation of the selected taxonomy or just want to display the taxonomy terms based on the language and post id.
Adjust IDs will affect the flow and it will always force the results based on the current langauge of the page. However, you can try to switch the langauge on the fly. So your code would be something like
global $sitepress;
$current_lang = apply_filters( 'wpml_current_language', NULL );
// Switch the language to English before the get_terms
$sitepress->switch_lang( 'en' );
$org_id = apply_filters( 'wpml_object_id', $product->get_id(), 'product', false, 'en');
$terms = get_the_terms($org_id, 'product_cat');
// Check if the terms are expected and then switch back the language
$sitepress->switch_lang($current_lang);
