Searching Across Two Discourse Forums
Ivan_Rapekas is seeking a way to enable users on his Russian forum to search both his English and Russian forums simultaneously using a single search box. He found a solution for integrating a Wordpress search with Discourse but is looking for a similar solution for Discourse+Discourse.
PFaffman suggested merging the forums using category export/import, but this is not feasible as the English and Russian forums are intended to be separate instances, catering to different language-speaking communities.
Vinothkannans proposed creating a custom plugin to achieve this functionality, which Ivan_Rapekas considers a viable direction.
Hi, I am an admin of two forums for java developers with different language (en and ru). Both forums have many similar questions and usually they have exactly the same text (java code, log files, json examples etc).
I’d like users from ru forum can search both forums at once using only one search box, for instance, for the query NullPointerException. Is it possible to achieve this?
I found similar solution for Wordpress+Discourse, but how to make the same for Discourse+Discourse? 
As far @as I know you cannot. Other forums I’ve seen have multiple languages in a single forum. You could use category export/import to merge, I think.
You can do it via a custom plugin.
Thank you for your reply and valuable suggestion! But unfortunately this is not a desired solution for the developers’ community.
Initially English was chosen as a universal language to talk, but we could not say ‘No’ to native Russians who probably is not familiar to fluent English. Thanks to the second forum, they can fully participate in discussions. As a discussion platform, it must be a separate instance. Native community grows such way, I hope non-English speaking people understand me.
Ok, thank you for the given direction!