|
1
|
|
|
<?php |
|
2
|
|
|
/** |
|
3
|
|
|
* WP Async Request |
|
4
|
|
|
* |
|
5
|
|
|
* @package WP-Background-Processing |
|
6
|
|
|
*/ |
|
7
|
|
|
|
|
8
|
|
|
defined( 'ABSPATH' ) || exit; |
|
9
|
|
|
|
|
10
|
|
|
/** |
|
11
|
|
|
* Abstract WP_Async_Request class. |
|
12
|
|
|
*/ |
|
13
|
|
|
abstract class WP_Async_Request { |
|
14
|
|
|
|
|
15
|
|
|
/** |
|
16
|
|
|
* Prefix |
|
17
|
|
|
* |
|
18
|
|
|
* (default value: 'wp') |
|
19
|
|
|
* |
|
20
|
|
|
* @var string |
|
21
|
|
|
* @access protected |
|
22
|
|
|
*/ |
|
23
|
|
|
protected $prefix = 'wp'; |
|
24
|
|
|
|
|
25
|
|
|
/** |
|
26
|
|
|
* Action |
|
27
|
|
|
* |
|
28
|
|
|
* (default value: 'async_request') |
|
29
|
|
|
* |
|
30
|
|
|
* @var string |
|
31
|
|
|
* @access protected |
|
32
|
|
|
*/ |
|
33
|
|
|
protected $action = 'async_request'; |
|
34
|
|
|
|
|
35
|
|
|
/** |
|
36
|
|
|
* Identifier |
|
37
|
|
|
* |
|
38
|
|
|
* @var mixed |
|
39
|
|
|
* @access protected |
|
40
|
|
|
*/ |
|
41
|
|
|
protected $identifier; |
|
42
|
|
|
|
|
43
|
|
|
/** |
|
44
|
|
|
* Data |
|
45
|
|
|
* |
|
46
|
|
|
* (default value: array()) |
|
47
|
|
|
* |
|
48
|
|
|
* @var array |
|
49
|
|
|
* @access protected |
|
50
|
|
|
*/ |
|
51
|
|
|
protected $data = array(); |
|
52
|
|
|
|
|
53
|
|
|
/** |
|
54
|
|
|
* Initiate new async request |
|
55
|
|
|
*/ |
|
56
|
|
|
public function __construct() { |
|
57
|
|
|
$this->identifier = $this->prefix . '_' . $this->action; |
|
58
|
|
|
|
|
59
|
|
|
add_action( 'wp_ajax_' . $this->identifier, array( $this, 'maybe_handle' ) ); |
|
60
|
|
|
add_action( 'wp_ajax_nopriv_' . $this->identifier, array( $this, 'maybe_handle' ) ); |
|
61
|
|
|
} |
|
62
|
|
|
|
|
63
|
|
|
/** |
|
64
|
|
|
* Set data used during the request |
|
65
|
|
|
* |
|
66
|
|
|
* @param array $data Data. |
|
67
|
|
|
* |
|
68
|
|
|
* @return $this |
|
69
|
|
|
*/ |
|
70
|
|
|
public function data( $data ) { |
|
71
|
|
|
$this->data = $data; |
|
72
|
|
|
|
|
73
|
|
|
return $this; |
|
74
|
|
|
} |
|
75
|
|
|
|
|
76
|
|
|
/** |
|
77
|
|
|
* Dispatch the async request |
|
78
|
|
|
* |
|
79
|
|
|
* @return array|WP_Error |
|
80
|
|
|
*/ |
|
81
|
|
|
public function dispatch() { |
|
82
|
|
|
$url = add_query_arg( $this->get_query_args(), $this->get_query_url() ); |
|
83
|
|
|
$args = $this->get_post_args(); |
|
84
|
|
|
|
|
85
|
|
|
return wp_remote_post( esc_url_raw( $url ), $args ); |
|
86
|
|
|
} |
|
87
|
|
|
|
|
88
|
|
|
/** |
|
89
|
|
|
* Get query args |
|
90
|
|
|
* |
|
91
|
|
|
* @return array |
|
92
|
|
|
*/ |
|
93
|
|
|
protected function get_query_args() { |
|
94
|
|
|
if ( property_exists( $this, 'query_args' ) ) { |
|
95
|
|
|
return $this->query_args; |
|
|
|
|
|
|
96
|
|
|
} |
|
97
|
|
|
|
|
98
|
|
|
return array( |
|
99
|
|
|
'action' => $this->identifier, |
|
100
|
|
|
'nonce' => wp_create_nonce( $this->identifier ), |
|
101
|
|
|
); |
|
102
|
|
|
} |
|
103
|
|
|
|
|
104
|
|
|
/** |
|
105
|
|
|
* Get query URL |
|
106
|
|
|
* |
|
107
|
|
|
* @return string |
|
108
|
|
|
*/ |
|
109
|
|
|
protected function get_query_url() { |
|
110
|
|
|
if ( property_exists( $this, 'query_url' ) ) { |
|
111
|
|
|
return $this->query_url; |
|
|
|
|
|
|
112
|
|
|
} |
|
113
|
|
|
|
|
114
|
|
|
return admin_url( 'admin-ajax.php' ); |
|
115
|
|
|
} |
|
116
|
|
|
|
|
117
|
|
|
/** |
|
118
|
|
|
* Get post args |
|
119
|
|
|
* |
|
120
|
|
|
* @return array |
|
121
|
|
|
*/ |
|
122
|
|
|
protected function get_post_args() { |
|
123
|
|
|
if ( property_exists( $this, 'post_args' ) ) { |
|
124
|
|
|
return $this->post_args; |
|
|
|
|
|
|
125
|
|
|
} |
|
126
|
|
|
|
|
127
|
|
|
return array( |
|
128
|
|
|
'timeout' => 0.01, |
|
129
|
|
|
'blocking' => false, |
|
130
|
|
|
'body' => $this->data, |
|
131
|
|
|
'cookies' => $_COOKIE, |
|
132
|
|
|
'sslverify' => apply_filters( 'https_local_ssl_verify', false ), |
|
133
|
|
|
); |
|
134
|
|
|
} |
|
135
|
|
|
|
|
136
|
|
|
/** |
|
137
|
|
|
* Maybe handle |
|
138
|
|
|
* |
|
139
|
|
|
* Check for correct nonce and pass to handler. |
|
140
|
|
|
*/ |
|
141
|
|
|
public function maybe_handle() { |
|
142
|
|
|
// Don't lock up other requests while processing |
|
143
|
|
|
session_write_close(); |
|
144
|
|
|
|
|
145
|
|
|
check_ajax_referer( $this->identifier, 'nonce' ); |
|
146
|
|
|
|
|
147
|
|
|
$this->handle(); |
|
148
|
|
|
|
|
149
|
|
|
wp_die(); |
|
150
|
|
|
} |
|
151
|
|
|
|
|
152
|
|
|
/** |
|
153
|
|
|
* Handle |
|
154
|
|
|
* |
|
155
|
|
|
* Override this method to perform any actions required |
|
156
|
|
|
* during the async request. |
|
157
|
|
|
*/ |
|
158
|
|
|
abstract protected function handle(); |
|
159
|
|
|
|
|
160
|
|
|
} |
|
161
|
|
|
|
In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: