Move followed_by? method to post model to simplify calling

(cherry picked from commit 2dc9035)

Author: trichoplax

app/controllers/comments_controller.rb

@@ -276,7 +276,7 @@ def post
 
   def post_follow
     @post = Post.find(params[:post_id])
-    if CommentThread.post_followed?(@post, current_user)
+    if @post.followed_by?(current_user)
       ThreadFollower.where(post: @post, user: current_user).destroy_all
     else
       ThreadFollower.create(post: @post, user: current_user)

app/models/comment_thread.rb

@@ -44,6 +44,7 @@ def can_access?(user)
     (!deleted? || user&.privilege?('flag_curate') || user&.post_privilege?('flag_curate', post)) &&
       post.can_access?(user)
   end
+<<<<<<< HEAD
 
   # Gets a list of user IDs who should be pingable in the thread.
   # @return [Array<Integer>]
@@ -85,4 +86,6 @@ def create_follower
       ThreadFollower.create comment_thread: self, user: post.user
     end
   end
+=======
+>>>>>>> 2dc90352 (Move followed_by? method to post model to simplify calling)
 end

app/models/post.rb

@@ -234,6 +234,10 @@ def reaction_list
              .to_h { |_k, v| [v.first.reaction_type, v] }
   end
 
+  def followed_by?(user)
+    ThreadFollower.where(post: self, user: user).any?
+  end
+
   private
 
   ##

app/views/posts/_expanded.html.erb

@@ -532,7 +532,7 @@
             <%= pluralize(public_count, 'comment thread') %>
           </h4>
           <% if user_signed_in? %>
-            <% if CommentThread.post_followed?(post, current_user) %>
+            <% if post.followed_by?(current_user) %>
               <%= link_to follow_post_comments_path(post_id: post.id), method: :post,
                           class: "button is-muted is-outlined is-small",
                           title: 'Don\'t follow new comment threads on this post',