Initial commit

app/models/concerns/photoable.rb

@@ -0,0 +1,13 @@
+module Photoable
+  extend ActiveSupport::Concern
+
+  included do
+    has_many_attached :photos
+
+    validates :photos, content_type: ["image/png", "image/jpeg"]
+  end
+
+  def photo
+    MainPhoto.new(photos.first)
+  end
+end