I have made some hacks to support multilingual mode by adding language field to some related tables (categories, posts, etc).
I have done almost things for both admin area and frontend area to work perfectly in multilingual mode (like the way Joomla content article and category were done).

Now, I just have only one another issue regarding to the ajax filter for the following tabs:
All | My Posts | Assigned Posts | Unresolved | Resolved | Unanswered

When I click to those tab, it query without language param (i.e. no $lang=xx in the URL). I don't know how to do now. Could you please help?

FYI, I sent my custom works to your team a few months ago with hope to have it merged into your main repository for future releases but no respond since then.

Hello Tran,

Hurm, its a bit tricky to send the language parameter in ajax. Perhaps you can try using the http referer to refer back the url in the previous request? For example you can use the following code and see how it goes.

$url = $_SERVER['HTTP_REFERER'];

Keep us updated.

Thanks for your reply

I found that the requests are made to url domain.com/?option=com_easydiscuss. If &lang=xx could be appended to the url, it would be fine. Could you please tell me where/which files I could modify to make such change?

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Hello Guys,

Tran Tuan already post his solution in the following forum thread, http://stackideas.com/forums/no-language-param-in-ajax-requests . Thank you for sharing Tran Tuan!