Fix validations for options hash

Author: hoffmaen

app/messages/validators.rb

@@ -242,13 +242,17 @@ def validate(record)
 
   class OptionsValidator < ActiveModel::Validator
     def validate(record)
-      unless record.options.is_a?(Hash)
-        record.errors.add(:options, message: "'options' is not an object")
-        return
+
+      # Make sure to write an empty hash if options is nil
+      if record.options.nil?
+        record.options = {}
       end
 
-      if record.options.empty?
-        record.errors.add(:options, message: "'options' must include one or more valid options")
+      # Empty option hashes are allowed, so we skip further validation
+      record.options.blank? && return
+
+      unless record.options.is_a?(Hash)
+        record.errors.add(:options, message: "'options' is not a valid object")
         return
       end