Rails 3 - has_many关联未保存(TypeError)

Question

存储has_many项目和项目belongs_to商店

我做了一个新的商店,保存它,一切都很好.我检查一下我可以打电话给.items.

ruby-1.9.2-p290 :063 > s.items
  Item Load (0.3ms)  SELECT "items".* FROM "items" WHERE "items"."store_id" = 12
 => [] 

但是当我尝试调用create或valid时？它返回以下内容:

ruby-1.9.2-p290 :064 > s.items.create
  Store Load (0.7ms)  SELECT "stores".* FROM "stores" WHERE "stores"."id" = 12 LIMIT 1
TypeError: Cannot visit Store

我之前从未见过以下错误,所以它正在努力!

---

编辑:经过一次下降和重新移动,仍然得到以下内容:

    ruby-1.9.2-p290 :008 > Item.create(:store_id => 5)
  Store Load (0.2ms)  SELECT "stores".* FROM "stores" WHERE "stores"."id" = 5 LIMIT 1
TypeError: Cannot visit Store

Answer 1

如果其他人遇到这个问题,那么结果是'Item'模型的验证问题.最初我有这个设置:

  validates :name, :presence => true, uniqueness => { :scope => :store }         

将范围设置为:store.原来我需要明确说明:store_id:

  validates :name, :presence => true, uniqueness => { :scope => :store_id }