[pseudo visitor]

4 years, 6 months ago #8640

Hi there.

I have a question: I would like to filter the search results by taxonomy. Is there a way to do that? I’m not having any luck on your documentation…

[wpsolr]

4 years, 6 months ago #8641

Hi,

Will you pass the taxonomy in the url parameters ?

[pseudo visitor]

4 years, 6 months ago #8642

Exactly ????

I was using the “pre_get_posts” hook before to filter the search results, but since using WPSOLR, it isn’t working anymore.

Here you have an example of what the URL will look like: https://www.testwebsite.com/?s=tste&tax=com-usar

[wpsolr]

4 years, 6 months ago #8643

Then it’s simple.

To know which parameters to use, just configure your taxonomy as a facet in screen 2.4.

The taxonomy then appears in the facets widget. Click on a taxonomy, and observe the url. This is your parameter.

[pseudo visitor]

4 years, 6 months ago #8644

By doing that, it only allows me to filter by a term inside this taxonomy. Is there a way to show the posts and terms only for the desired taxonomy?

For example: by passing “?tax=tax1” it only shows the terms and posts for that taxonomy.

[wpsolr]

4 years, 6 months ago #8645

You mean to filter out posts with no term in the taxonomy?

[wpsolr]

4 years, 6 months ago #8646

To display only posts with no value in a taxonomy field:

add_action( WPSOLR_Events::WPSOLR_ACTION_SOLARIUM_QUERY, [
 $this,
 'wpsolr_action_query',
], 10, 1 );

/**
 *
 * Add a "not exists" filter on a taxonomy.
 *
 * @param array $parameters
 *
 */
public function wpsolr_action_query( $parameters ) {

$taxonomy_name = 'my-taxonomy';

 /* @var WPSOLR_AbstractSearchClient $search_engine_client */
 $search_engine_client = $parameters[ WPSOLR_Events::WPSOLR_ACTION_SOLARIUM_QUERY__PARAM_SOLARIUM_CLIENT ];

/**
 * Create a "not exists" filter
 */
$filter_not_exists_terms_in_taxonomy = $search_engine_client->search_engine_client_create_not(
 $search_engine_client->search_engine_client_create_filter_exists( $taxonomy_name . WpSolrSchema::_SOLR_DYNAMIC_TYPE_STRING )
);
$search_engine_client->search_engine_client_add_filter( "not in taxonomy {$taxonomy_name}", $filter_not_exists_terms_in_taxonomy );
}

[pseudo visitor]

4 years, 6 months ago #8647

Exactly, that’s it ????

Where should I insert this code? When I do it in my theme’s functions.php, I get the following error:
Fatal error: Uncaught Error: Using $this when not in object context in …
Where does “$this” come from?

[wpsolr]

4 years, 6 months ago #8648

Because you’re in a function, not in a class.

Use instead:
add_action( WPSOLR_Events::WPSOLR_ACTION_SOLARIUM_QUERY, 'wpsolr_action_query', 10, 1 );

[wpsolr]

4 years, 6 months ago #8649

Also check some more details in case of troubles at https://www.wpsolr.com/guide-category/actions-and-filters/

[pseudo visitor]

4 years, 6 months ago #8650

I now have this issue:
Fatal error: Uncaught Error: Call to a member function search_engine_client_create_not() on null

on the following line:

$filter_not_exists_terms_in_taxonomy = $search_engine_client->search_engine_client_create_not($search_engine_client->search_engine_client_create_filter_exists($taxonomy_name . WpSolrSchema::_SOLR_DYNAMIC_TYPE_STRING));

[wpsolr]

4 years, 6 months ago #8651

Can I see your code?

[pseudo visitor]

4 years, 6 months ago #8652

Of course.

Inside my functions.php I’m doing the following:

use wpsolr\core\classes\WPSOLR_Events;

use Solarium\QueryType\Select\Query\FilterQuery;

use Solarium\QueryType\Select\Query\Query;

use wpsolr\core\classes\engines\solarium\admin\WPSOLR_Solr_Admin_Api_Core;

use wpsolr\core\classes\engines\WPSOLR_AbstractSearchClient;

use wpsolr\core\classes\hosting_api\WPSOLR_Hosting_Api_Abstract;

use wpsolr\core\classes\services\WPSOLR_Service_Container;

use wpsolr\core\classes\utilities\WPSOLR_Regexp;

use wpsolr\core\classes\WpSolrSchema;

add_action(WPSOLR_Events::WPSOLR_ACTION_SOLARIUM_QUERY, 'wpsolr_action_query', 10, 1);

function wpsolr_action_query($parameters)

{

$taxonomy_name = 'tax1';

/* @var WPSOLR_AbstractSearchClient $search_engine_client */

$search_engine_client = $parameters[WPSOLR_Events::WPSOLR_ACTION_SOLARIUM_QUERY__PARAM_SOLARIUM_CLIENT];

/** * Create a "not exists" filter */

$filter_not_exists_terms_in_taxonomy = $search_engine_client->search_engine_client_create_not($search_engine_client->search_engine_client_create_filter_exists($taxonomy_name . WpSolrSchema::_SOLR_DYNAMIC_TYPE_STRING));

$search_engine_client->search_engine_client_add_filter("not in taxonomy {$taxonomy_name}", $filter_not_exists_terms_in_taxonomy);

}

[wpsolr]

4 years, 6 months ago #8653

Have a look at the very end of : https://www.wpsolr.com/guide-category/actions-and-filters/

[pseudo visitor]

4 years, 6 months ago #8654

Thank you, I was able to make it work finally ????
I also figured out that to have the same effect on several taxonomies I just have to repeat the process for each one ????

Again, thank you for everything and for your patience.