polylang / include / static-pages.php

static-pages.php in Polylang 2.8, at include/static-pages.php

127 lines 3.5 KB

Raw Download Zip

1	<?php
2	/**
3	* @package Polylang
4	*/
5
6	/**
7	* Base class to manage the static front page and the page for posts
8	*
9	* @since 1.8
10	*/
11	class PLL_Static_Pages {
12	public $model, $options;
13	public $page_on_front, $page_for_posts;
14
15	/**
16	* Constructor: setups filters and actions
17	*
18	* @since 1.8
19	*
20	* @param object $polylang
21	*/
22	public function __construct( &$polylang ) {
23	$this->model = &$polylang->model;
24	$this->options = &$polylang->options;
25	$this->curlang = &$polylang->curlang;
26
27	$this->init();
28
29	// Modifies the page link in case the front page is not in the default language
30	add_filter( 'page_link', array( $this, 'page_link' ), 20, 2 );
31
32	// Clean the languages cache when editing page of front, page for posts
33	add_action( 'update_option_show_on_front', array( $this->model, 'clean_languages_cache' ) );
34	add_action( 'update_option_page_on_front', array( $this->model, 'clean_languages_cache' ) );
35	add_action( 'update_option_page_for_posts', array( $this->model, 'clean_languages_cache' ) );
36
37	// Refresh rewrite rules when the page on front is modified
38	add_action( 'update_option_page_on_front', 'flush_rewrite_rules' );
39
40	// OEmbed
41	add_filter( 'oembed_request_post_id', array( $this, 'oembed_request_post_id' ), 10, 2 );
42	}
43
44	/**
45	* Stores the page on front and page for posts ids
46	*
47	* @since 1.8
48	*/
49	public function init() {
50	if ( 'page' == get_option( 'show_on_front' ) ) {
51	$this->page_on_front = get_option( 'page_on_front' );
52	$this->page_for_posts = get_option( 'page_for_posts' );
53	} else {
54	$this->page_on_front = 0;
55	$this->page_for_posts = 0;
56	}
57	}
58
59	/**
60	* Modifies the page link in case the front page is not in the default language
61	*
62	* @since 0.7.2
63	*
64	* @param string $link link to the page
65	* @param int $id post id of the page
66	* @return string modified link
67	*/
68	public function page_link( $link, $id ) {
69	$lang = $this->model->post->get_language( $id );
70
71	if ( $lang && $id == $lang->page_on_front ) {
72	return $lang->home_url;
73	}
74	return $link;
75	}
76
77	/**
78	* Adds page_on_front and page_for_posts properties to the language objects
79	*
80	* @since 1.8
81	*
82	* @param array $languages
83	* @param object $model
84	*/
85	public static function pll_languages_list( $languages, $model ) {
86	if ( 'page' === get_option( 'show_on_front' ) ) {
87	foreach ( $languages as $k => $language ) {
88	$languages[ $k ]->page_on_front = $model->post->get( get_option( 'page_on_front' ), $language );
89	$languages[ $k ]->page_for_posts = $model->post->get( get_option( 'page_for_posts' ), $language );
90	}
91	}
92
93	return $languages;
94	}
95
96	/**
97	* Translates page for posts
98	*
99	* @since 1.8
100	*
101	* @param int $v page for posts page id
102	* @return int
103	*/
104	public function translate_page_for_posts( $v ) {
105	// Don't attempt to translate in a 'switch_blog' action as there is a risk to call this function while initializing the languages cache
106	return isset( $this->curlang->page_for_posts ) && ! doing_action( 'switch_blog' ) ? $this->curlang->page_for_posts : $v;
107	}
108
109	/**
110	* Fixes the oembed for the translated static front page
111	* when the language page is redirected to the front page
112	*
113	* @since 2.6
114	*
115	* @param int $post_id The post ID.
116	* @param string $url The requested URL.
117	*/
118	public function oembed_request_post_id( $post_id, $url ) {
119	foreach ( $this->model->get_languages_list() as $lang ) {
120	if ( trailingslashit( $url ) === trailingslashit( $lang->home_url ) ) {
121	$post_id = $lang->page_on_front;
122	}
123	}
124	return $post_id;
125	}
126	}
127