Change label for facets ?

Hello,

In what file can I add this filter? Is it possible to add it to a template or do I have to hack the wpsolr plugin?

Thanks!

-Emmanuel

If I put the filter in functions.php in my theme, by what should I replace ‘$this’ in the arg array?

Thanks. We used this as follows (object oriented context).

First, a function to check if wpsolr plugin is active:

/**
         * Checks if the required plugin is active in network or single site.
         *
         * @source http://queryloop.com/how-to-detect-if-a-wordpress-plugin-is-active/
         *
         * @param $plugin
         *
         * @return bool
         */
        function plugin_is_active( $plugin ) {
        	$network_active = false;
        	if ( is_multisite() ) {
        		$plugins = get_site_option( 'active_sitewide_plugins' );
        		if ( isset( $plugins[$plugin] ) ) {
        			$network_active = true;
        		}
        	}
        	return in_array( $plugin, get_option( 'active_plugins' ) ) || $network_active;
        }

Then in the constructor of the object used as a ‘facet’:

//if the 'Apache Solr search by WPSOLR plugin' is active, hook into a filter that
            //  allows control over the text displayed for WPSolR 'facets'
            if( $this->plugin_is_active( 'wpsolr-search-engine/wpsolr_search_engine.php' ) ) {

                //wait until the plugins are loaded to calculate the text to make sure the filter
                //  is available
                add_action( 'plugins_loaded', array( $this, 'update_wpsolr_facet_labels' ) );
            }

And the functions:

/**
         * A filter function for WPSolR, a WordPress SolR plugin, that ensures the
         *  taxonomy's label is shown when displaying a 'facet', rather than the $machine_name.
         *
         * @param String $machine_name      The original name used for the facet.
         *                                  Expected as the name saved in the database to
         *                                  refer to the taxonomy.
         * @return String $label            The text to display for the facet on the search page.
         */
        public function get_label_for_wpsolr( $machine_name ) {
            //set the original facet name as the default value
            $label = $machine_name;

            //if the facet is this taxonomy object, return the actual label of the taxonomy
            if ( $this->machine_name === $machine_name ) {
                $label = $this->label;
            }

            //pass the result to WPSolR to display on the search page
            return $label;
        }

        /**
         * Filter the text used to display the names of taxonomies when they are
         * used as 'facets' by the Apache Solr search by WPSOLR plugin.
         *
         * @return void
         */
        public function update_wpsolr_facet_labels() {
            //hook into WPSolR, an additional plugin
		    add_filter( WpSolrFilters::WPSOLR_FILTER_SEARCH_PAGE_FACET_NAME, array( $this, 'get_label_for_wpsolr' ), 10, 1 );
        }