1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
|
<?php
/**
* Server-side rendering of the `core/comments` block.
*
* @package WordPress
*/
/**
* Renders the `core/comments` block on the server.
*
* This render callback is mainly for rendering a dynamic, legacy version of
* this block (the old `core/post-comments`). It uses the `comments_template()`
* function to generate the output, in the same way as classic PHP themes.
*
* As this callback will always run during SSR, first we need to check whether
* the block is in legacy mode. If not, the HTML generated in the editor is
* returned instead.
*
* @param array $attributes Block attributes.
* @param string $content Block default content.
* @param WP_Block $block Block instance.
* @return string Returns the filtered post comments for the current post wrapped inside "p" tags.
*/
function render_block_core_comments( $attributes, $content, $block ) {
global $post;
$post_id = $block->context['postId'];
if ( ! isset( $post_id ) ) {
return '';
}
// Return early if there are no comments and comments are closed.
if ( ! comments_open( $post_id ) && (int) get_comments_number( $post_id ) === 0 ) {
return '';
}
// If this isn't the legacy block, we need to render the static version of this block.
$is_legacy = 'core/post-comments' === $block->name || ! empty( $attributes['legacy'] );
if ( ! $is_legacy ) {
return $block->render( array( 'dynamic' => false ) );
}
$post_before = $post;
$post = get_post( $post_id );
setup_postdata( $post );
ob_start();
/*
* There's a deprecation warning generated by WP Core.
* Ideally this deprecation is removed from Core.
* In the meantime, this removes it from the output.
*/
add_filter( 'deprecated_file_trigger_error', '__return_false' );
comments_template();
remove_filter( 'deprecated_file_trigger_error', '__return_false' );
$output = ob_get_clean();
$post = $post_before;
$classnames = array();
// Adds the old class name for styles' backwards compatibility.
if ( isset( $attributes['legacy'] ) ) {
$classnames[] = 'wp-block-post-comments';
}
if ( isset( $attributes['textAlign'] ) ) {
$classnames[] = 'has-text-align-' . $attributes['textAlign'];
}
$wrapper_attributes = get_block_wrapper_attributes(
array( 'class' => implode( ' ', $classnames ) )
);
/*
* Enqueues scripts and styles required only for the legacy version. That is
* why they are not defined in `block.json`.
*/
wp_enqueue_script( 'comment-reply' );
enqueue_legacy_post_comments_block_styles( $block->name );
return sprintf( '<div %1$s>%2$s</div>', $wrapper_attributes, $output );
}
/**
* Registers the `core/comments` block on the server.
*/
function register_block_core_comments() {
register_block_type_from_metadata(
__DIR__ . '/comments',
array(
'render_callback' => 'render_block_core_comments',
'skip_inner_blocks' => true,
)
);
}
add_action( 'init', 'register_block_core_comments' );
/**
* Use the button block classes for the form-submit button.
*
* @param array $fields The default comment form arguments.
*
* @return array Returns the modified fields.
*/
function comments_block_form_defaults( $fields ) {
if ( wp_is_block_theme() ) {
$fields['submit_button'] = '<input name="%1$s" type="submit" id="%2$s" class="%3$s wp-block-button__link ' . wp_theme_get_element_class_name( 'button' ) . '" value="%4$s" />';
$fields['submit_field'] = '<p class="form-submit wp-block-button">%1$s %2$s</p>';
}
return $fields;
}
add_filter( 'comment_form_defaults', 'comments_block_form_defaults' );
/**
* Enqueues styles from the legacy `core/post-comments` block. These styles are
* required only by the block's fallback.
*
* @param string $block_name Name of the new block type.
*/
function enqueue_legacy_post_comments_block_styles( $block_name ) {
static $are_styles_enqueued = false;
if ( ! $are_styles_enqueued ) {
$handles = array(
'wp-block-post-comments',
'wp-block-buttons',
'wp-block-button',
);
foreach ( $handles as $handle ) {
wp_enqueue_block_style( $block_name, array( 'handle' => $handle ) );
}
$are_styles_enqueued = true;
}
}
/**
* Ensures backwards compatibility for any users running the Gutenberg plugin
* who have used Post Comments before it was merged into Comments Query Loop.
*
* The same approach was followed when core/query-loop was renamed to
* core/post-template.
*
* @see https://github.com/WordPress/gutenberg/pull/41807
* @see https://github.com/WordPress/gutenberg/pull/32514
*/
function register_legacy_post_comments_block() {
$registry = WP_Block_Type_Registry::get_instance();
/*
* Remove the old `post-comments` block if it was already registered, as it
* is about to be replaced by the type defined below.
*/
if ( $registry->is_registered( 'core/post-comments' ) ) {
unregister_block_type( 'core/post-comments' );
}
// Recreate the legacy block metadata.
$metadata = array(
'name' => 'core/post-comments',
'category' => 'theme',
'attributes' => array(
'textAlign' => array(
'type' => 'string',
),
),
'uses_context' => array(
'postId',
'postType',
),
'supports' => array(
'html' => false,
'align' => array( 'wide', 'full' ),
'typography' => array(
'fontSize' => true,
'lineHeight' => true,
'__experimentalFontStyle' => true,
'__experimentalFontWeight' => true,
'__experimentalLetterSpacing' => true,
'__experimentalTextTransform' => true,
'__experimentalDefaultControls' => array(
'fontSize' => true,
),
),
'color' => array(
'gradients' => true,
'link' => true,
'__experimentalDefaultControls' => array(
'background' => true,
'text' => true,
),
),
'inserter' => false,
),
'style' => array(
'wp-block-post-comments',
'wp-block-buttons',
'wp-block-button',
),
'render_callback' => 'render_block_core_comments',
'skip_inner_blocks' => true,
);
/*
* Filters the metadata object, the same way it's done inside
* `register_block_type_from_metadata()`. This applies some default filters,
* like `_wp_multiple_block_styles`, which is required in this case because
* the block has multiple styles.
*/
/** This filter is documented in wp-includes/blocks.php */
$metadata = apply_filters( 'block_type_metadata', $metadata );
register_block_type( 'core/post-comments', $metadata );
}
add_action( 'init', 'register_legacy_post_comments_block', 21 );
|
