Ruby on rails 4 RubyonRails+；变形虫宝石：未定义的方法&x27；宏'；

我在Rails控制台（使用Ruby 2.1）中尝试了阿米巴版本2.0.0。这是我的模型：

class Dict < ActiveRecord::Base
  belongs_to :user
  has_many :cards, dependent: :destroy
  has_many :idioms, through: :cards
end
class Card < ActiveRecord::Base
  belongs_to :dict
  has_many :idioms, dependent: :destroy
  amoeba do
    exclude_field :dict_id
  end
end
class Idiom < ActiveRecord::Base
  belongs_to :card
  amoeba do
    include_field :repres
    include_field :card_id
    include_field :kind
    include_field :note
  end
end

这引发了一个例外

NoMethodError: undefined method macro' for nil:NilClass
from .../amoeba-2.0.0/lib/amoeba.rb:412:in amo_process_association'
from .../amoeba-2.0.0/lib/amoeba.rb:381:in block in amoeba_dup'
from .../amoeba-2.0.0/lib/amoeba.rb:379:in each'
from ..../amoeba-2.0.0/lib/amoeba.rb:379:in amoeba_dup'
from .../amoeba-2.0.0/lib/amoeba.rb:457:in block in amo_process_association'

---

我在哪里犯了错误？

GitHub上也提出了这个问题：

这是由于

include\u字段

用于非关联的内容造成的。不要那样做！为了避免将来出现歧义，

include\u字段

被重命名为

include\u关联

NoMethodError: undefined method macro' for nil:NilClass
from .../amoeba-2.0.0/lib/amoeba.rb:412:in amo_process_association'
from .../amoeba-2.0.0/lib/amoeba.rb:381:in block in amoeba_dup'
from .../amoeba-2.0.0/lib/amoeba.rb:379:in each'
from ..../amoeba-2.0.0/lib/amoeba.rb:379:in amoeba_dup'
from .../amoeba-2.0.0/lib/amoeba.rb:457:in block in amo_process_association'