Changeset 42661

Timestamp:

02/07/2018 08:08:47 PM (7 years ago)

Author:

boonebgorges

Message:

Comments: Introduce 'allow_empty_comment' filter.

This filter allows plugin authors to allow empty comments on a selective
basis during comment submission.

Props jpurdy647.
Fixes #16979.

File:

• trunk/src/wp-includes/comment.php (modified) (2 diffs)

trunk/src/wp-includes/comment.php

@@ -3223 +3223 @@
     }
 
-    if ( '' == $comment_content ) {
-        return new WP_Error( 'require_valid_comment', __( '<strong>ERROR</strong>: please type a comment.' ), 200 );
-    }
-
     $commentdata = compact(
         'comment_post_ID',
@@ -3238 +3234 @@
     );
 
+    /**
+     * Filters whether an empty comment should be allowed.
+     *
+     * @since 5.0.0
+     *
+     * @param bool  $allow_empty_comment Default false.
+     * @param array $commentdata         Array of comment data to be sent to wp_insert_comment().
+     */
+    $allow_empty_comment = apply_filters( 'allow_empty_comment', false, $commentdata );
+    if ( '' === $comment_content && ! $allow_empty_comment ) {
+        return new WP_Error( 'require_valid_comment', __( '<strong>ERROR</strong>: please type a comment.' ), 200 );
+    }
+
     $check_max_lengths = wp_check_comment_data_max_lengths( $commentdata );
     if ( is_wp_error( $check_max_lengths ) ) {