def conditions_to_fields(conditions)
fields = {}
conditions.each do |key, value|
if value.is_a?(::ActiveRecord::Base) && (assoc = klass.reflect_on_association(key.to_sym)) && assoc.belongs_to?
if ::ActiveRecord::VERSION::STRING < "3.1"
fields[assoc.primary_key_name] = value.send(value.class.primary_key)
fields[assoc.options[:foreign_type]] = value.class.base_class.name.to_s if assoc.options[:polymorphic]
else
fields[assoc.foreign_key] = value.send(value.class.primary_key)
fields[assoc.foreign_type] = value.class.base_class.name.to_s if assoc.options[:polymorphic]
end
else
fields[key] = value
end
end
fields
end