Note for future unique constraint on image_fingerprint added

README.Developer

@@ -61,3 +61,19 @@ Log.log "foo"
 or with section (default='frontend'):
 Log.log "foo", "importer"
 
+--
+
+Future stuff
+------------
+
+A possible migration adding a unique constraint to avoid duplicate images
+
+class AddScreenshotUniqueConstraintImageFingerprint < ActiveRecord::Migration
+  def change
+    add_index :screenshots, [:package_id, :image_fingerprint], :unique => true
+  end
+end
+
+A separate validation in the Screenshots model has been implemented already.
+This unique constraint would raise an error and not trigger a validation error
+properly unless the separate model validation is in place.