```ruby
class Field
  include DataMapper::Resource

  property :id, Serial
  property :field_name_id, Integer
  property :entry_id, Integer
  property :value, Text
  property :created_at, DateTime
  property :updated_at, DateTime

  belongs_to :field_name
  belongs_to :entry
end```

Define to_a and to_ary to suppress meaningless query
user
```ruby
class Field
  include DataMapper::Resource

  property :id, Serial
  property :field_name_id, Integer
  property :entry_id, Integer
  property :value, Text
  property :created_at, DateTime
  property :updated_at, DateTime

  belongs_to :field_name
  belongs_to :entry

  %i|to_a to_ary|.each do |name|
    define_method name do
      # noop
    end
  end
end
```
assistant