polylang / src / frontend / choose-lang-url.php

choose-lang-url.php in Polylang trunk, at src/frontend/choose-lang-url.php

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1	<?php
2	/**
3	* @package Polylang
4	*/
5
6	/**
7	* Choose the language when the language code is added to all urls
8	* The language is set in plugins_loaded with priority 1 as done by WPML
9	* Some actions have to be delayed to wait for $wp_rewrite availability
10	*
11	* @since 1.2
12	*/
13	class PLL_Choose_Lang_Url extends PLL_Choose_Lang {
14	/**
15	* The name of the index file which is the entry point to all requests.
16	* We need this before the global $wp_rewrite is created.
17	* Also hardcoded in WP_Rewrite.
18	*
19	* @var string
20	*/
21	protected $index = 'index.php';
22
23	/**
24	* Sets the language
25	*
26	* @since 1.8
27	*
28	* @return void
29	*/
30	public function init() {
31	parent::init();
32
33	if ( ! did_action( 'pll_language_defined' ) ) {
34	$this->set_language();
35	}
36
37	add_filter( 'request', array( $this, 'request' ) );
38	}
39
40	/**
41	* Returns the language according to information found in the url.
42	*
43	* @since 1.2
44	* @since 3.8 Renamed from `get_language_from_url()`.
45	*
46	* @return PLL_Language\|false
47	*/
48	protected function get_current_language() {
49	$host = str_replace( 'www.', '', (string) wp_parse_url( $this->links_model->home, PHP_URL_HOST ) ); // Remove www. for the comparison.
50	$home_path = (string) wp_parse_url( $this->links_model->home, PHP_URL_PATH );
51
52	$requested_url = pll_get_requested_url();
53	$requested_host = str_replace( 'www.', '', (string) wp_parse_url( $requested_url, PHP_URL_HOST ) ); // Remove www. for the comparison.
54	$requested_path = rtrim( str_replace( $this->index, '', (string) wp_parse_url( $requested_url, PHP_URL_PATH ) ), '/' ); // Some PHP setups turn requests for / into /index.php in REQUEST_URI.
55	$requested_query = wp_parse_url( $requested_url, PHP_URL_QUERY );
56
57	// Home is requested.
58	if ( $requested_host === $host && $requested_path === $home_path && empty( $requested_query ) ) {
59	add_action( 'setup_theme', array( $this, 'home_requested' ) );
60	return $this->get_home_language();
61	}
62
63	// Take care to post & page preview http://wordpress.org/support/topic/static-frontpage-url-parameter-url-language-information.
64	if ( isset( $_GET['preview'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification
65	foreach ( array( 'p', 'page_id' ) as $var ) {
66	if ( empty( $_GET[ $var ] ) \|\| ! is_numeric( $_GET[ $var ] ) ) { // phpcs:ignore WordPress.Security.NonceVerification
67	continue;
68	}
69	$lang = $this->model->post->get_language( (int) $_GET[ $var ] ); // phpcs:ignore WordPress.Security.NonceVerification
70	return $lang ?: $this->model->get_default_language();
71	}
72	}
73
74	// Take care to (unattached) attachments.
75	if ( ! empty( $_GET['attachment_id'] ) && is_numeric( $_GET['attachment_id'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification
76	return $this->model->post->get_language( (int) $_GET['attachment_id'] ); // phpcs:ignore WordPress.Security.NonceVerification
77	}
78
79	$slug = $this->links_model->get_language_from_url();
80
81	if ( ! empty( $slug ) ) {
82	return $this->model->get_language( $slug );
83	}
84
85	if ( $this->options['hide_default'] ) {
86	return $this->model->get_default_language();
87	}
88
89	return false;
90	}
91
92
93	/**
94	* Adds the current language in query vars
95	* useful for subdomains and multiple domains
96	*
97	* @since 1.8
98	*
99	* @param array $qv main request query vars
100	* @return array modified query vars
101	*/
102	public function request( $qv ) {
103	// FIXME take care not to break untranslated content
104	// FIXME media ?
105
106	// Untranslated post types
107	if ( isset( $qv['post_type'] ) && ! $this->model->is_translated_post_type( $qv['post_type'] ) ) {
108	return $qv;
109	}
110
111	// Untranslated taxonomies
112	$tax_qv = array_filter( wp_list_pluck( get_taxonomies( array(), 'objects' ), 'query_var' ) ); // Get all taxonomies query vars
113	$tax_qv = array_intersect( $tax_qv, array_keys( $qv ) ); // Get all queried taxonomies query vars
114
115	if ( ! $this->model->is_translated_taxonomy( array_keys( $tax_qv ) ) ) {
116	return $qv;
117	}
118
119	if ( isset( $this->curlang ) && empty( $qv['lang'] ) ) {
120	$qv['lang'] = $this->curlang->slug;
121	}
122
123	return $qv;
124	}
125	}
126