DB restructure, print page

app/models/id_card/network_logo.rb

@@ -1,13 +1,31 @@
 module IdCard
   class NetworkLogo < ApplicationRecord
-    before_save :round_aspect_ratio
+    before_validation :calculate_aspect_ratio, if: :image_data_changed?
+
+    scope :defaults, -> { where(default: true) }
+
+    class << self
+
+      def medcost
+        defaults.where("filename LIKE ?", "%Medcost%")
+      end
+
+      def cigna
+        defaults.where("filename LIKE ?", "%Cigna%")
+      end
+
+    end
 
     private
 
-    def round_aspect_ratio
-      if self.aspect_ratio.present?
-        self.aspect_ratio = self.aspect_ratio.round(2)
+    def calculate_aspect_ratio
+      image_io = StringIO.new(image_data)
+      width, height = FastImage.size(image_io)
+      image_ratio = width.to_f / height
+      if image_ratio
+        self.aspect_ratio = image_ratio.round(2)
       end
     end
+
   end
 end