comment liking

models/comment.rb

@@ -2,4 +2,31 @@ class Comment < Sequel::Model
   include Sequel::ParanoidDelete
   many_to_one :event
   many_to_one :actioning_site, class: :Site
-end
+  one_to_many :comment_likes
+
+  def liking_site_names
+    comment_likes.collect {|comment_like| comment_like.actioning_site.username }
+  end
+
+  def site_likes?(site)
+    comment_likes_dataset.filter(actioning_site_id: site.id).count > 0
+  end
+
+  def site_like(site)
+    add_comment_like actioning_site_id: site.id
+  end
+
+  def site_unlike(site)
+    comment_likes_dataset.filter(actioning_site_id: site.id).delete
+  end
+
+  def toggle_site_like(site)
+    if site_likes? site
+      site_unlike site
+      false
+    else
+      site_like site
+      true
+    end
+  end
+end