polylang / include / filters-links.php

filters-links.php in Polylang 2.0.12, at include/filters-links.php

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1	<?php
2
3	/**
4	* manages links filters needed on both frontend and admin
5	*
6	* @since 1.8
7	*/
8	class PLL_Filters_Links {
9	public $links, $links_model, $model, $options;
10
11	/**
12	* constructor
13	*
14	* @since 1.8
15	*
16	* @param object $polylang
17	*/
18	public function __construct( &$polylang ) {
19	$this->links = &$polylang->links;
20	$this->links_model = &$polylang->links_model;
21	$this->model = &$polylang->model;
22	$this->options = &$polylang->options;
23
24	// low priority on links filters to come after any other modifications
25	if ( $this->options['force_lang'] ) {
26	add_filter( 'post_link', array( $this, 'post_type_link' ), 20, 2 );
27	add_filter( '_get_page_link', array( $this, '_get_page_link' ), 20, 2 );
28	}
29
30	add_filter( 'post_type_link', array( $this, 'post_type_link' ), 20, 2 );
31	add_filter( 'term_link', array( $this, 'term_link' ), 20, 3 );
32
33	if ( $this->options['force_lang'] > 0 ) {
34	add_filter( 'attachment_link', array( $this, 'attachment_link' ), 20, 2 );
35	}
36
37	if ( 3 === $this->options['force_lang'] ) {
38	add_filter( 'preview_post_link', array( $this, 'preview_post_link' ), 20 );
39	}
40	}
41
42	/**
43	* modifies page links
44	*
45	* @since 1.7
46	*
47	* @param string $link post link
48	* @param int $post_id post ID
49	* @return string modified post link
50	*/
51	public function _get_page_link( $link, $post_id ) {
52	// /!\ WP does not use pretty permalinks for preview
53	return false !== strpos( $link, 'preview=true' ) && false !== strpos( $link, 'page_id=' ) ? $link : $this->links_model->add_language_to_link( $link, $this->model->post->get_language( $post_id ) );
54	}
55
56	/**
57	* modifies attachment links
58	*
59	* @since 1.6.2
60	*
61	* @param string $link attachment link
62	* @param int $post_id attachment link
63	* @return string modified attachment link
64	*/
65	public function attachment_link( $link, $post_id ) {
66	return wp_get_post_parent_id( $post_id ) ? $link : $this->links_model->add_language_to_link( $link, $this->model->post->get_language( $post_id ) );
67	}
68
69	/**
70	* modifies custom posts links
71	*
72	* @since 1.6
73	*
74	* @param string $link post link
75	* @param object $post post object
76	* @return string modified post link
77	*/
78	public function post_type_link( $link, $post ) {
79	// /!\ WP does not use pretty permalinks for preview
80	if ( ( false === strpos( $link, 'preview=true' ) \|\| false === strpos( $link, 'p=' ) ) && $this->model->is_translated_post_type( $post->post_type ) ) {
81	$lang = $this->model->post->get_language( $post->ID );
82	$link = $this->options['force_lang'] ? $this->links_model->add_language_to_link( $link, $lang ) : $link;
83
84	/**
85	* Filter a post or custom post type link
86	*
87	* @since 1.6
88	*
89	* @param string $link the post link
90	* @param object $lang the current language
91	* @param object $post the post object
92	*/
93	$link = apply_filters( 'pll_post_type_link', $link, $lang, $post );
94	}
95
96	return $link;
97	}
98
99	/**
100	* modifies term link
101	*
102	* @since 0.7
103	*
104	* @param string $link term link
105	* @param object $term term object
106	* @param string $tax taxonomy name
107	* @return string modified term link
108	*/
109	public function term_link( $link, $term, $tax ) {
110	if ( $this->model->is_translated_taxonomy( $tax ) ) {
111	$lang = $this->model->term->get_language( $term->term_id );
112	$link = $this->options['force_lang'] ? $this->links_model->add_language_to_link( $link, $lang ) : $link;
113
114	/**
115	* Filter a term link
116	*
117	* @since 1.6
118	*
119	* @param string $link the term link
120	* @param object $lang the current language
121	* @param object $term the term object
122	*/
123	return apply_filters( 'pll_term_link', $link, $lang, $term );
124	}
125
126	// in case someone calls get_term_link for the 'language' taxonomy
127	if ( 'language' === $tax ) {
128	return $this->links_model->home_url( $term );
129	}
130
131	return $link;
132	}
133
134	/**
135	* FIXME: keeps the preview post link on default domain when using multiple domains
136	*
137	* @since 1.6.1
138	*
139	* @param string $url
140	* @return string modified url
141	*/
142	public function preview_post_link( $url ) {
143	return $this->links_model->remove_language_from_link( $url );
144	}
145	}
146
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