elasticpress / includes / classes / REST / MetaRange.php

MetaRange.php in ElasticPress 5.3.5, at includes/classes/REST/MetaRange.php

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1	<?php
2	/**
3	* Meta Range REST API Controller
4	*
5	* @since 5.0.0
6	* @package elasticpress
7	*/
8
9	namespace ElasticPress\REST;
10
11	use ElasticPress\Features;
12
13	/**
14	* Meta Range API controller class.
15	*
16	* @since 5.0.0
17	* @package elasticpress
18	*/
19	class MetaRange {
20
21	/**
22	* Register routes.
23	*
24	* Registers the route using its own endpoint and the previous facets
25	* endpoint, for backwards compatibility.
26	*
27	* @return void
28	*/
29	public function register_routes() {
30	$args = [
31	'args' => $this->get_args(),
32	'callback' => [ $this, 'get_meta_range' ],
33	'methods' => 'GET',
34	'permission_callback' => [ $this, 'check_permission' ],
35	];
36
37	register_rest_route( 'elasticpress/v1', 'meta-range', $args );
38	register_rest_route( 'elasticpress/v1', 'facets/meta-range/block-preview', $args );
39	}
40
41	/**
42	* Check that the request has permission.
43	*
44	* @return boolean
45	*/
46	public function check_permission() {
47	return current_user_can( 'edit_theme_options' );
48	}
49
50	/**
51	* Get args schema.
52	*
53	* @return array
54	*/
55	public function get_args() {
56	return [
57	'facet' => [
58	'description' => __( 'Filter to get a value range for.', 'elasticpress' ),
59	'required' => true,
60	'type' => 'string',
61	],
62	];
63	}
64
65	/**
66	* Get the range of values for a given filter.
67	*
68	* @param \WP_REST_Request $request Full details about the request.
69	* @return void
70	*/
71	public function get_meta_range( \WP_REST_Request $request ) {
72	global $wp_query;
73
74	$search = Features::factory()->get_registered_feature( 'search' );
75	$facets = Features::factory()->get_registered_feature( 'facets' );
76
77	$facet = $request->get_param( 'facet' );
78
79	add_filter(
80	'ep_facet_meta_range_fields',
81	function ( $meta_fields ) use ( $facet ) {
82	$meta_fields = [ $facet ];
83
84	return $meta_fields;
85	}
86	);
87
88	$args = [
89	'post_type' => $search->get_searchable_post_types(),
90	'posts_per_page' => 1,
91	'ep_is_facetable' => true,
92	];
93	$wp_query->query( $args );
94
95	$min_field_name = $facets->types['meta-range']->get_filter_name() . $facet . '_min';
96	$max_field_name = $facets->types['meta-range']->get_filter_name() . $facet . '_max';
97
98	$aggregations = $facets->get_query_aggregations( $wp_query );
99
100	if ( empty( $aggregations[ $min_field_name ] ) \|\| empty( $aggregations[ $max_field_name ] ) ) {
101	wp_send_json_error();
102	return;
103	}
104
105	$min = $aggregations[ $min_field_name ];
106	$max = $aggregations[ $max_field_name ];
107
108	wp_send_json_success(
109	[
110	'min' => $min,
111	'max' => $max,
112	]
113	);
114	}
115	}
116