From aa68fee6302cff658e7576c688d8bd2ff8d5b208 Mon Sep 17 00:00:00 2001
From: Ben Halpern <ben@dev.to>
Date: Mon, 13 May 2019 16:57:36 -0400
Subject: [PATCH] Turn blank canonical url into nil (#2821)

---
 app/models/article.rb | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/app/models/article.rb b/app/models/article.rb
index 4457c9651..99bfb060e 100644
--- a/app/models/article.rb
+++ b/app/models/article.rb
@@ -55,6 +55,7 @@ class Article < ApplicationRecord
   before_save       :calculate_base_scores
   before_save       :set_caches
   before_save       :fetch_video_duration
+  before_save       :clean_data
   after_save        :async_score_calc, if: :published
   after_save        :bust_cache
   after_save        :update_main_image_background_hex
@@ -599,6 +600,10 @@ class Article < ApplicationRecord
     title.to_s.downcase.parameterize.tr("_", "") + "-" + rand(100_000).to_s(26)
   end
 
+  def clean_data
+    self.canonical_url = nil if canonical_url == ""
+  end
+
   def bust_cache
     return unless Rails.env.production?