dont recreate artist urls that havent changed

2014-12-03 15:01:22 -08:00
parent 02c07fefb2
commit f9c341a794
2 changed files with 15 additions and 2 deletions
--- a/app/models/artist.rb
+++ b/app/models/artist.rb
@@ -44,9 +44,14 @@ class Artist < ActiveRecord::Base

    def save_url_string
      if @url_string
-        urls.clear
+        prev = urls.map(&:url)
+        curr = @url_string.scan(/\S+/)

-        @url_string.scan(/\S+/).each do |url|
+        (prev - curr).each do |url|
+          urls.where(:url => url).destroy_all
+        end
+
+        (curr - prev).each do |url|
          urls.create(:url => url)
        end
      end