/
class-wp-rest-revisions-controller.php
578 lines (507 loc) · 16.8 KB
/
class-wp-rest-revisions-controller.php
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
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
<?php
/**
* REST API: WP_REST_Revisions_Controller class
*
* @package ClassicPress
* @subpackage REST_API
* @since WP-4.7.0
*/
/**
* Core class used to access revisions via the REST API.
*
* @since WP-4.7.0
*
* @see WP_REST_Controller
*/
class WP_REST_Revisions_Controller extends WP_REST_Controller {
/**
* Parent post type.
*
* @since WP-4.7.0
* @var string
*/
private $parent_post_type;
/**
* Parent controller.
*
* @since WP-4.7.0
* @var WP_REST_Controller
*/
private $parent_controller;
/**
* The base of the parent controller's route.
*
* @since WP-4.7.0
* @var string
*/
private $parent_base;
/**
* Constructor.
*
* @since WP-4.7.0
*
* @param string $parent_post_type Post type of the parent.
*/
public function __construct( $parent_post_type ) {
$this->parent_post_type = $parent_post_type;
$this->parent_controller = new WP_REST_Posts_Controller( $parent_post_type );
$this->namespace = 'wp/v2';
$this->rest_base = 'revisions';
$post_type_object = get_post_type_object( $parent_post_type );
$this->parent_base = ! empty( $post_type_object->rest_base ) ? $post_type_object->rest_base : $post_type_object->name;
}
/**
* Registers routes for revisions based on post types supporting revisions.
*
* @since WP-4.7.0
*
* @see register_rest_route()
*/
public function register_routes() {
register_rest_route(
$this->namespace,
'/' . $this->parent_base . '/(?P<parent>[\d]+)/' . $this->rest_base,
array(
'args' => array(
'parent' => array(
'description' => __( 'The ID for the parent of the object.' ),
'type' => 'integer',
),
),
array(
'methods' => WP_REST_Server::READABLE,
'callback' => array( $this, 'get_items' ),
'permission_callback' => array( $this, 'get_items_permissions_check' ),
'args' => $this->get_collection_params(),
),
'schema' => array( $this, 'get_public_item_schema' ),
)
);
register_rest_route(
$this->namespace,
'/' . $this->parent_base . '/(?P<parent>[\d]+)/' . $this->rest_base . '/(?P<id>[\d]+)',
array(
'args' => array(
'parent' => array(
'description' => __( 'The ID for the parent of the object.' ),
'type' => 'integer',
),
'id' => array(
'description' => __( 'Unique identifier for the object.' ),
'type' => 'integer',
),
),
array(
'methods' => WP_REST_Server::READABLE,
'callback' => array( $this, 'get_item' ),
'permission_callback' => array( $this, 'get_item_permissions_check' ),
'args' => array(
'context' => $this->get_context_param( array( 'default' => 'view' ) ),
),
),
array(
'methods' => WP_REST_Server::DELETABLE,
'callback' => array( $this, 'delete_item' ),
'permission_callback' => array( $this, 'delete_item_permissions_check' ),
'args' => array(
'force' => array(
'type' => 'boolean',
'default' => false,
'description' => __( 'Required to be true, as revisions do not support trashing.' ),
),
),
),
'schema' => array( $this, 'get_public_item_schema' ),
)
);
}
/**
* Get the parent post, if the ID is valid.
*
* @since WP-4.7.2
*
* @param int $id Supplied ID.
* @return WP_Post|WP_Error Post object if ID is valid, WP_Error otherwise.
*/
protected function get_parent( $parent ) {
$error = new WP_Error( 'rest_post_invalid_parent', __( 'Invalid post parent ID.' ), array( 'status' => 404 ) );
if ( (int) $parent <= 0 ) {
return $error;
}
$parent = get_post( (int) $parent );
if ( empty( $parent ) || empty( $parent->ID ) || $this->parent_post_type !== $parent->post_type ) {
return $error;
}
return $parent;
}
/**
* Checks if a given request has access to get revisions.
*
* @since WP-4.7.0
*
* @param WP_REST_Request $request Full data about the request.
* @return true|WP_Error True if the request has read access, WP_Error object otherwise.
*/
public function get_items_permissions_check( $request ) {
$parent = $this->get_parent( $request['parent'] );
if ( is_wp_error( $parent ) ) {
return $parent;
}
$parent_post_type_obj = get_post_type_object( $parent->post_type );
if ( ! current_user_can( $parent_post_type_obj->cap->edit_post, $parent->ID ) ) {
return new WP_Error( 'rest_cannot_read', __( 'Sorry, you are not allowed to view revisions of this post.' ), array( 'status' => rest_authorization_required_code() ) );
}
return true;
}
/**
* Get the revision, if the ID is valid.
*
* @since WP-4.7.2
*
* @param int $id Supplied ID.
* @return WP_Post|WP_Error Revision post object if ID is valid, WP_Error otherwise.
*/
protected function get_revision( $id ) {
$error = new WP_Error( 'rest_post_invalid_id', __( 'Invalid revision ID.' ), array( 'status' => 404 ) );
if ( (int) $id <= 0 ) {
return $error;
}
$revision = get_post( (int) $id );
if ( empty( $revision ) || empty( $revision->ID ) || 'revision' !== $revision->post_type ) {
return $error;
}
return $revision;
}
/**
* Gets a collection of revisions.
*
* @since WP-4.7.0
*
* @param WP_REST_Request $request Full data about the request.
* @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure.
*/
public function get_items( $request ) {
$parent = $this->get_parent( $request['parent'] );
if ( is_wp_error( $parent ) ) {
return $parent;
}
$revisions = wp_get_post_revisions( $request['parent'] );
$response = array();
foreach ( $revisions as $revision ) {
$data = $this->prepare_item_for_response( $revision, $request );
$response[] = $this->prepare_response_for_collection( $data );
}
return rest_ensure_response( $response );
}
/**
* Checks if a given request has access to get a specific revision.
*
* @since WP-4.7.0
*
* @param WP_REST_Request $request Full data about the request.
* @return bool|WP_Error True if the request has read access for the item, WP_Error object otherwise.
*/
public function get_item_permissions_check( $request ) {
return $this->get_items_permissions_check( $request );
}
/**
* Retrieves one revision from the collection.
*
* @since WP-4.7.0
*
* @param WP_REST_Request $request Full data about the request.
* @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure.
*/
public function get_item( $request ) {
$parent = $this->get_parent( $request['parent'] );
if ( is_wp_error( $parent ) ) {
return $parent;
}
$revision = $this->get_revision( $request['id'] );
if ( is_wp_error( $revision ) ) {
return $revision;
}
$response = $this->prepare_item_for_response( $revision, $request );
return rest_ensure_response( $response );
}
/**
* Checks if a given request has access to delete a revision.
*
* @since WP-4.7.0
*
* @param WP_REST_Request $request Full details about the request.
* @return bool|WP_Error True if the request has access to delete the item, WP_Error object otherwise.
*/
public function delete_item_permissions_check( $request ) {
$parent = $this->get_parent( $request['parent'] );
if ( is_wp_error( $parent ) ) {
return $parent;
}
$revision = $this->get_revision( $request['id'] );
if ( is_wp_error( $revision ) ) {
return $revision;
}
$response = $this->get_items_permissions_check( $request );
if ( ! $response || is_wp_error( $response ) ) {
return $response;
}
$post_type = get_post_type_object( 'revision' );
return current_user_can( $post_type->cap->delete_post, $revision->ID );
}
/**
* Deletes a single revision.
*
* @since WP-4.7.0
*
* @param WP_REST_Request $request Full details about the request.
* @return true|WP_Error True on success, or WP_Error object on failure.
*/
public function delete_item( $request ) {
$revision = $this->get_revision( $request['id'] );
if ( is_wp_error( $revision ) ) {
return $revision;
}
$force = isset( $request['force'] ) ? (bool) $request['force'] : false;
// We don't support trashing for revisions.
if ( ! $force ) {
/* translators: %s: force=true */
return new WP_Error( 'rest_trash_not_supported', sprintf( __( "Revisions do not support trashing. Set '%s' to delete." ), 'force=true' ), array( 'status' => 501 ) );
}
$previous = $this->prepare_item_for_response( $revision, $request );
$result = wp_delete_post( $request['id'], true );
/**
* Fires after a revision is deleted via the REST API.
*
* @since WP-4.7.0
*
* @param (mixed) $result The revision object (if it was deleted or moved to the trash successfully)
* or false (failure). If the revision was moved to the trash, $result represents
* its new state; if it was deleted, $result represents its state before deletion.
* @param WP_REST_Request $request The request sent to the API.
*/
do_action( 'rest_delete_revision', $result, $request );
if ( ! $result ) {
return new WP_Error( 'rest_cannot_delete', __( 'The post cannot be deleted.' ), array( 'status' => 500 ) );
}
$response = new WP_REST_Response();
$response->set_data(
array(
'deleted' => true,
'previous' => $previous->get_data(),
)
);
return $response;
}
/**
* Prepares the revision for the REST response.
*
* @since WP-4.7.0
*
* @param WP_Post $post Post revision object.
* @param WP_REST_Request $request Request object.
* @return WP_REST_Response Response object.
*/
public function prepare_item_for_response( $post, $request ) {
$GLOBALS['post'] = $post;
setup_postdata( $post );
$fields = $this->get_fields_for_response( $request );
$data = array();
if ( in_array( 'author', $fields, true ) ) {
$data['author'] = (int) $post->post_author;
}
if ( in_array( 'date', $fields, true ) ) {
$data['date'] = $this->prepare_date_response( $post->post_date_gmt, $post->post_date );
}
if ( in_array( 'date_gmt', $fields, true ) ) {
$data['date_gmt'] = $this->prepare_date_response( $post->post_date_gmt );
}
if ( in_array( 'id', $fields, true ) ) {
$data['id'] = $post->ID;
}
if ( in_array( 'modified', $fields, true ) ) {
$data['modified'] = $this->prepare_date_response( $post->post_modified_gmt, $post->post_modified );
}
if ( in_array( 'modified_gmt', $fields, true ) ) {
$data['modified_gmt'] = $this->prepare_date_response( $post->post_modified_gmt );
}
if ( in_array( 'parent', $fields, true ) ) {
$data['parent'] = (int) $post->post_parent;
}
if ( in_array( 'slug', $fields, true ) ) {
$data['slug'] = $post->post_name;
}
if ( in_array( 'guid', $fields, true ) ) {
$data['guid'] = array(
/** This filter is documented in wp-includes/post-template.php */
'rendered' => apply_filters( 'get_the_guid', $post->guid, $post->ID ),
'raw' => $post->guid,
);
}
if ( in_array( 'title', $fields, true ) ) {
$data['title'] = array(
'raw' => $post->post_title,
'rendered' => get_the_title( $post->ID ),
);
}
if ( in_array( 'content', $fields, true ) ) {
$data['content'] = array(
'raw' => $post->post_content,
/** This filter is documented in wp-includes/post-template.php */
'rendered' => apply_filters( 'the_content', $post->post_content ),
);
}
if ( in_array( 'excerpt', $fields, true ) ) {
$data['excerpt'] = array(
'raw' => $post->post_excerpt,
'rendered' => $this->prepare_excerpt_response( $post->post_excerpt, $post ),
);
}
$context = ! empty( $request['context'] ) ? $request['context'] : 'view';
$data = $this->add_additional_fields_to_object( $data, $request );
$data = $this->filter_response_by_context( $data, $context );
$response = rest_ensure_response( $data );
if ( ! empty( $data['parent'] ) ) {
$response->add_link( 'parent', rest_url( sprintf( '%s/%s/%d', $this->namespace, $this->parent_base, $data['parent'] ) ) );
}
/**
* Filters a revision returned from the API.
*
* Allows modification of the revision right before it is returned.
*
* @since WP-4.7.0
*
* @param WP_REST_Response $response The response object.
* @param WP_Post $post The original revision object.
* @param WP_REST_Request $request Request used to generate the response.
*/
return apply_filters( 'rest_prepare_revision', $response, $post, $request );
}
/**
* Checks the post_date_gmt or modified_gmt and prepare any post or
* modified date for single post output.
*
* @since WP-4.7.0
*
* @param string $date_gmt GMT publication time.
* @param string|null $date Optional. Local publication time. Default null.
* @return string|null ISO8601/RFC3339 formatted datetime, otherwise null.
*/
protected function prepare_date_response( $date_gmt, $date = null ) {
if ( '0000-00-00 00:00:00' === $date_gmt ) {
return null;
}
if ( isset( $date ) ) {
return mysql_to_rfc3339( $date );
}
return mysql_to_rfc3339( $date_gmt );
}
/**
* Retrieves the revision's schema, conforming to JSON Schema.
*
* @since WP-4.7.0
*
* @return array Item schema data.
*/
public function get_item_schema() {
$schema = array(
'$schema' => 'http://json-schema.org/draft-04/schema#',
'title' => "{$this->parent_post_type}-revision",
'type' => 'object',
// Base properties for every Revision.
'properties' => array(
'author' => array(
'description' => __( 'The ID for the author of the object.' ),
'type' => 'integer',
'context' => array( 'view', 'edit', 'embed' ),
),
'date' => array(
'description' => __( "The date the object was published, in the site's timezone." ),
'type' => 'string',
'format' => 'date-time',
'context' => array( 'view', 'edit', 'embed' ),
),
'date_gmt' => array(
'description' => __( 'The date the object was published, as GMT.' ),
'type' => 'string',
'format' => 'date-time',
'context' => array( 'view', 'edit' ),
),
'guid' => array(
'description' => __( 'GUID for the object, as it exists in the database.' ),
'type' => 'string',
'context' => array( 'view', 'edit' ),
),
'id' => array(
'description' => __( 'Unique identifier for the object.' ),
'type' => 'integer',
'context' => array( 'view', 'edit', 'embed' ),
),
'modified' => array(
'description' => __( "The date the object was last modified, in the site's timezone." ),
'type' => 'string',
'format' => 'date-time',
'context' => array( 'view', 'edit' ),
),
'modified_gmt' => array(
'description' => __( 'The date the object was last modified, as GMT.' ),
'type' => 'string',
'format' => 'date-time',
'context' => array( 'view', 'edit' ),
),
'parent' => array(
'description' => __( 'The ID for the parent of the object.' ),
'type' => 'integer',
'context' => array( 'view', 'edit', 'embed' ),
),
'slug' => array(
'description' => __( 'An alphanumeric identifier for the object unique to its type.' ),
'type' => 'string',
'context' => array( 'view', 'edit', 'embed' ),
),
),
);
$parent_schema = $this->parent_controller->get_item_schema();
if ( ! empty( $parent_schema['properties']['title'] ) ) {
$schema['properties']['title'] = $parent_schema['properties']['title'];
}
if ( ! empty( $parent_schema['properties']['content'] ) ) {
$schema['properties']['content'] = $parent_schema['properties']['content'];
}
if ( ! empty( $parent_schema['properties']['excerpt'] ) ) {
$schema['properties']['excerpt'] = $parent_schema['properties']['excerpt'];
}
if ( ! empty( $parent_schema['properties']['guid'] ) ) {
$schema['properties']['guid'] = $parent_schema['properties']['guid'];
}
return $this->add_additional_fields_schema( $schema );
}
/**
* Retrieves the query params for collections.
*
* @since WP-4.7.0
*
* @return array Collection parameters.
*/
public function get_collection_params() {
return array(
'context' => $this->get_context_param( array( 'default' => 'view' ) ),
);
}
/**
* Checks the post excerpt and prepare it for single post output.
*
* @since WP-4.7.0
*
* @param string $excerpt The post excerpt.
* @param WP_Post $post Post revision object.
* @return string Prepared excerpt or empty string.
*/
protected function prepare_excerpt_response( $excerpt, $post ) {
/** This filter is documented in wp-includes/post-template.php */
$excerpt = apply_filters( 'the_excerpt', $excerpt, $post );
if ( empty( $excerpt ) ) {
return '';
}
return $excerpt;
}
}