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64049: REST API: Allow comments to be edited to become empty #10083

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kadamwhite wants to merge 7 commits into from
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64049: REST API: Allow comments to be edited to become empty #10083

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d301028
Enable empty block comments
adamsilverstein Sep 22, 2025
42587f9
try using check_is_comment_content_allowed for updates
adamsilverstein Sep 22, 2025
885ef27
64049: Add failing test for updating comment to empty
kadamwhite Sep 29, 2025
0a82a69
Merge branch 'adamsilverstein:enable/empty-block-comments' into 64049…
kadamwhite Sep 29, 2025
96de3d9
64049: Skip content-emptiness check if content key is not present in …
kadamwhite Sep 29, 2025
e44fa3f
64049: Correct comment on empty-comment-content test
kadamwhite Oct 15, 2025
d427c43
Merge branch 'trunk' into 64049-rest-empty-comment-updates
kadamwhite Oct 15, 2025
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7 changes: 5 additions & 2 deletions src/wp-includes/rest-api/endpoints/class-wp-rest-comments-controller.php
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Original file line number Diff line number Diff line change
Expand Up @@ -859,8 +859,7 @@ public function update_item( $request ) {
if ( is_wp_error( $prepared_args ) ) {
return $prepared_args;
}

if ( isset( $prepared_args['comment_content'] ) && empty( $prepared_args['comment_content'] ) ) {
if ( ! $this->check_is_comment_content_allowed( $prepared_args ) ) {
return new WP_Error(
'rest_comment_content_invalid',
__( 'Invalid comment content.' ),
Expand Down Expand Up @@ -1903,6 +1902,10 @@ public function check_comment_author_email( $value, $request, $param ) {
* @return bool True if the content is allowed, false otherwise.
*/
protected function check_is_comment_content_allowed( $prepared_comment ) {
if ( ! isset( $prepared_comment['comment_content'] ) ) {
return true;
}

$check = wp_parse_args(
$prepared_comment,
array(
Expand Down
24 changes: 24 additions & 0 deletions tests/phpunit/tests/rest-api/rest-comments-controller.php
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Original file line number Diff line number Diff line change
Expand Up @@ -2493,6 +2493,30 @@ public function test_update_item_no_content() {
$this->assertErrorResponse( 'rest_comment_content_invalid', $response, 400 );
}

/**
* @ticket 64049
*/
public function test_update_item_no_content_allow_empty_comment_filter() {
$post_id = self::factory()->post->create();

wp_set_current_user( self::$admin_id );

$request = new WP_REST_Request( 'PUT', sprintf( '/wp/v2/comments/%d', self::$approved_id ) );
$request->set_param( 'author_email', 'another@email.com' );

// Sending a request without content is fine.
$response = rest_get_server()->dispatch( $request );
$this->assertSame( 200, $response->get_status() );

// Sending a request with empty comment content is also fine.
$request->set_param( 'author_email', 'yetanother@email.com' );
$request->set_param( 'content', '' );
add_filter( 'allow_empty_comment', '__return_true' );
$response = rest_get_server()->dispatch( $request );
remove_filter( 'allow_empty_comment', '__return_true' );
$this->assertSame( 200, $response->get_status() );
}

public function test_update_item_no_change() {
$comment = get_comment( self::$approved_id );

Expand Down
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