# File activerecord/lib/active_record/dynamic_matchers.rb, line 38
          def define(model, name)
            model.class_eval <<-CODE, __FILE__, __LINE__ + 1
            def self.#{name}(#{signature(model, name)})
              #{body(model, name)}
            end
            CODE
          end

# File activerecord/lib/active_record/dynamic_matchers.rb, line 30
def match(name)
  FindBy.match?(name) || FindByBang.match?(name)
end

# File activerecord/lib/active_record/dynamic_matchers.rb, line 34
def valid?(model, name)
  attribute_names(model, name.to_s).all? { |name| model.columns_hash[name] || model.reflect_on_aggregation(name.to_sym) }
end