rahyong

Hi,

Yes, you should be able to add the code to functions.php in your custom theme. In the solution that I provided, it is necessary to re-index in Elastic plugin for each WPML language after making the code update since it creates a separate Elasticsearch index for each language.

Paul, did you have to make any additional changes to get EP plugin to push all language content to ES when using a single index? In my initial tests, EP would only push content for the currently active language.

For those that want to use a filter and not update the core code:

function filter_ep_formatted_args($formatted_args, $args) {
	$new_formatted_args = $formatted_args;	

	// Update each $formatted_args["filter"]["and"]["bool"]["must"]["terms"] to expand terms into
	// array using comma delimiter
	if ( ! empty($formatted_args["filter"]["and"]) ) {
		for ( $and_ix=0; $and_ix<count($formatted_args["filter"]["and"]); $and_ix++ ) {
			if ( ! empty( $formatted_args["filter"]["and"][$and_ix]["bool"]["must"] ) ) {
				for ( $must_ix=0; $must_ix < count($formatted_args["filter"]["and"][$and_ix]["bool"]["must"]); $must_ix++ ) {
					if ( ! empty($formatted_args["filter"]["and"][$and_ix]["bool"]["must"][$must_ix]["terms"]) ) {
						foreach ( $formatted_args["filter"]["and"][$and_ix]["bool"]["must"][$must_ix]["terms"] as $term_key => $term_value ) {
								$new_formatted_args["filter"]["and"][$and_ix]["bool"]["must"][$must_ix]["terms"][$term_key] = explode(',',$term_value[0]);
						} // foreach
					} // if
				} // for
			} // if
		} // for
	} // if
	return $new_formatted_args;
} // filter_ep_formatted_args

add_filter('ep_formatted_args', array($this,'filter_ep_formatted_args'), 10, 2);

This should work:

// Over-ride index name to support WPML
function filter_ep_index_name($index_name, $blog_id) {
	// WPML support
	if ( function_exists('icl_object_id') ) {
		$site_url = get_site_url( $blog_id );
		$site_url = preg_replace('/\/$/','',apply_filters( 'wpml_home_url', $site_url ));	

		if ( ! empty( $site_url ) ) {
			$index_name = preg_replace( '#https?://(www\.)?#i', '', $site_url );
			$index_name = preg_replace( '#[^\w]#', '', $index_name ) . '-' . $blog_id;
		} else {
			$index_name = false;
		}
	} // if
	return $index_name;
} // filter_ep_index_name

// Fix Index name
add_filter('ep_index_name', array($this,'filter_ep_index_name'), 10, 2);

I think I found a solution for WPML by updating get_index_name in classes/class-ep-config.php. Indexing and search now appears to return correct language based results.

$site_url = get_site_url( $blog_id );

// WPML support
if ( function_exists('icl_object_id') ) {
	$site_url = preg_replace('/\/$/','',apply_filters( 'wpml_home_url', $site_url ));
} // if

We have also taken the 0.9.2 distribution and made tweaks to support multi-site (virtual directory and virtual host) with site specific IdPs on WordPress 4.2.7. Would you be interested in a copy of our changes? It would be great to get multi-site included with the core distribution.