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<?php
/**
* Query
*
* @package WP Grid Builder
* @author Loïc Blascos
* @copyright 2019-2021 Loïc Blascos
*/
namespace WP_Grid_Builder\FrontEnd;
// Exit if accessed directly.
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
/**
* Query objects in grid
*
* @class WP_Grid_Builder\FrontEnd\Query
* @since 1.0.0
*/
class Query implements Models\Query_Interface {
/**
* Holds grid settings
*
* @since 1.0.0
* @access protected
*
* @var array
*/
protected $settings = [];
/**
* Source class name
*
* @since 1.0.0
* @access public
*
* @var string
*/
private $source = [];
/**
* Constructor
*
* @since 1.0.0
* @access public
*
* @param object Settings $settings Settings class instance.
*/
public function __construct( Settings $settings ) {
$this->settings = $settings;
}
/**
* Check source class
*
* @since 1.0.0
* @access public
*
* @throws \Exception If no sources found.
*/
public function check() {
$source = $this->settings->source;
$sources = apply_filters( 'wp_grid_builder/sources', [] );
$this->source = isset( $sources[ $source ] ) ? $sources[ $source ] : false;
if ( class_exists( $this->source ) ) {
return;
}
throw new \Exception(
sprintf(
/* translators: %s: grid source type */
__( 'The source "%s" does not exist.', 'wp-grid-builder' ),
esc_html( $this->settings->source )
)
);
}
/**
* Parse current source query
*
* @since 1.4.0
* @access public
*/
public function parse_query() {
$this->check();
$this->query = new $this->source( $this->settings );
$this->query->parse_query();
}
/**
* Retrieve results from parsed query
*
* @since 1.4.0
* @access public
*
* @return array Queried objects
*/
public function get_results() {
$results = $this->query->get_results();
if ( empty( $results ) ) {
$this->set_error();
}
return $results;
}
/**
* Set error message to display
*
* @since 1.0.0
* @access public
*/
public function set_error() {
// If no selected facets (intial load).
if ( ! wpgb_has_selected_facets() ) {
$message = __( 'Sorry, no content found.', 'wp-grid-builder' );
$message = $this->settings->no_posts_msg ?: $message;
$message = apply_filters( 'wp_grid_builder/grid/no_posts_msg', $message, $this->settings );
} else {
$message = __( 'Sorry, no results match your search criteria.', 'wp-grid-builder' );
$message = $this->settings->no_results_msg ?: $message;
$message = apply_filters( 'wp_grid_builder/grid/no_results_msg', $message, $this->settings );
}
$this->settings->error = new \WP_Error( 'no_results', $message );
}
}
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