FIX: Don't use topic reply count as answer count in 'Question' schema

plugin.rb

@@ -238,7 +238,7 @@ def before_head_close_meta(controller)
       'name' => topic.title,
       'text' => first_post.excerpt,
       'upvoteCount' => first_post.like_count,
-      'answerCount' => topic.reply_count,
+      'answerCount' => 0,
       'dateCreated' => topic.created_at,
       'author' => {
         '@type' => 'Person',
@@ -247,6 +247,7 @@ def before_head_close_meta(controller)
     }
 
     if accepted_answer = Post.find_by(id: topic.custom_fields["accepted_answer_post_id"])
+      question_json['answerCount'] = 1
       question_json[:acceptedAnswer] = {
         '@type' => 'Answer',
         'text' => accepted_answer.excerpt,

spec/requests/topics_controller_spec.rb

@@ -5,31 +5,46 @@
   let(:topic) { p1.topic }
   let(:p2) { Fabricate(:post, like_count: 2, topic: topic, user: Fabricate(:user)) }
 
+  def schema_json(answerCount)
+    if answerCount > 0
+      answer_json = ',"acceptedAnswer":{"@type":"Answer","text":"%{answer_text}","upvoteCount":%{answer_likes},"dateCreated":"%{answered_at}","url":"%{answer_url}","author":{"@type":"Person","name":"%{username2}"}}' % {
+        answer_text: p2.excerpt,
+        answer_likes: p2.like_count,
+        answered_at: p2.created_at.as_json,
+        answer_url: p2.full_url,
+        username2: p2.user&.username
+      }
+    else
+      answer_json = ""
+    end
+
+    '<script type="application/ld+json">{"@context":"http://schema.org","@type":"QAPage","name":"%{title}","mainEntity":{"@type":"Question","name":"%{title}","text":"%{question_text}","upvoteCount":%{question_likes},"answerCount":%{answerCount},"dateCreated":"%{created_at}","author":{"@type":"Person","name":"%{username1}"}%{answer_json}}}</script>' % {
+      title: topic.title,
+      question_text: p1.excerpt,
+      question_likes: p1.like_count,
+      answerCount: answerCount,
+      created_at: topic.created_at.as_json,
+      username1: topic.user&.name,
+      answer_json: answer_json
+    }
+  end
+
   before do
     SiteSetting.allow_solved_on_all_topics = true
   end
 
   it 'should include correct schema information in header' do
+    get "/t/#{topic.slug}/#{topic.id}"
+
+    expect(response.body).to include(schema_json(0))
+
     p2.custom_fields["is_accepted_answer"] = true
     p2.save_custom_fields
-
     topic.custom_fields["accepted_answer_post_id"] = p2.id
     topic.save_custom_fields
 
     get "/t/#{topic.slug}/#{topic.id}"
 
-    expect(response.body).to include('<script type="application/ld+json">{"@context":"http://schema.org","@type":"QAPage","name":"%{title}","mainEntity":{"@type":"Question","name":"%{title}","text":"%{question_text}","upvoteCount":%{question_likes},"answerCount":%{reply_count},"dateCreated":"%{created_at}","author":{"@type":"Person","name":"%{username1}"},"acceptedAnswer":{"@type":"Answer","text":"%{answer_text}","upvoteCount":%{answer_likes},"dateCreated":"%{answered_at}","url":"%{answer_url}","author":{"@type":"Person","name":"%{username2}"}}}}</script>' % {
-      title: topic.title,
-      question_text: p1.excerpt,
-      question_likes: p1.like_count,
-      reply_count: topic.reply_count,
-      created_at: topic.created_at.as_json,
-      username1: topic.user&.name,
-      answer_text: p2.excerpt,
-      answer_likes: p2.like_count,
-      answered_at: p2.created_at.as_json,
-      answer_url: p2.full_url,
-      username2: p2.user&.username
-    })
+    expect(response.body).to include(schema_json(1))
   end
 end