fixed "excerpt" in AS JSON

README.md

@@ -59,6 +59,10 @@ To implement:
 
 Project maintained on github at [pfefferle/wordpress-activitypub](https://github.com/pfefferle/wordpress-activitypub).
 
+### 0.1.1 ###
+
+* fixed "excerpt" in AS JSON
+
 ### 0.1.0 ###
 
 * added basic WebFinger support

includes/class-activitypub-post.php

@@ -22,14 +22,12 @@ class Activitypub_Post {
 	public function to_array() {
 		$post = $this->post;
 
-		setup_postdata( $post );
-
 		$array = array(
 			'id' => get_permalink( $post ),
 			'type' => $this->get_object_type(),
 			'published' => date( 'Y-m-d\TH:i:s\Z', strtotime( $post->post_date ) ),
 			'attributedTo' => get_author_posts_url( $post->post_author ),
-			'summary' => apply_filters( 'the_excerpt', get_post_field( 'post_excerpt', $post->ID ) ),
+			'summary' => apply_filters( 'the_excerpt', activitypub_get_the_excerpt( $post->ID, 400 ) ),
 			'inReplyTo' => null,
 			'content' => apply_filters( 'the_content', get_post_field( 'post_content', $post->ID ) ),
 			'contentMap' => array(
@@ -41,8 +39,6 @@ class Activitypub_Post {
 			'tag' => $this->get_tags(),
 		);
 
-		wp_reset_postdata();
-
 		return apply_filters( 'activitypub_post', $array );
 	}
 

includes/functions.php

@@ -183,3 +183,40 @@ function activitypub_get_follower_inboxes( $user_id, $followers ) {
 
 	return array_unique( $inboxes );
 }
+
+/**
+ * Get the excerpt for a post for use outside of the loop.
+ *
+ * @param int|WP_Post $post ID or WP_Post object.
+ * @param int         Optional excerpt length.
+ *
+ * @return string     The excerpt.
+ */
+function activitypub_get_the_excerpt( $post, $excerpt_length = 55 ) {
+
+	$excerpt = get_post_field( 'post_excerpt', $post );
+
+	if ( '' === $excerpt ) {
+
+		$content = get_post_field( 'post_content', $post );
+
+		// An empty string will make wp_trim_excerpt do stuff we do not want.
+		if ( '' !== $content ) {
+
+			$excerpt = strip_shortcodes( $content );
+
+			/** This filter is documented in wp-includes/post-template.php */
+			$excerpt = apply_filters( 'the_content', $excerpt );
+			$excerpt = str_replace( ']]>', ']]>', $excerpt );
+
+			$excerpt_length = apply_filters( 'excerpt_length', $excerpt_length );
+
+			/** This filter is documented in wp-includes/formatting.php */
+			$excerpt_more = apply_filters( 'excerpt_more', ' […]' );
+
+			$excerpt = wp_trim_words( $excerpt, $excerpt_length, $excerpt_more );
+		}
+	}
+
+	return apply_filters( 'the_excerpt', $excerpt );
+}

languages/activitypub.pot

@@ -4,7 +4,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: ActivityPub 0.1.0\n"
 "Report-Msgid-Bugs-To: https://wordpress.org/support/plugin/activitypub\n"
-"POT-Creation-Date: 2018-12-20 10:32:52+00:00\n"
+"POT-Creation-Date: 2018-12-20 18:09:57+00:00\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=utf-8\n"
 "Content-Transfer-Encoding: 8bit\n"

readme.txt

@@ -59,6 +59,10 @@ To implement:
 
 Project maintained on github at [pfefferle/wordpress-activitypub](https://github.com/pfefferle/wordpress-activitypub).
 
+= 0.1.1 =
+
+* fixed "excerpt" in AS JSON
+
 = 0.1.0 =
 
 * added basic WebFinger support