无法在 Rails has_many 中查询：通过关系

Question

我正在努力解决我的人际关系，但我在使用这些关联时遇到了困难。

所以我有三个模型 User, Shop 和 Access. 。一个用户应该有很多个商店，一个商店应该有很多用户。

型号为：

class User < ActiveRecord::Base
  has_many :accesses
  has_many :stores, through: :accesses
end

class Store < ActiveRecord::Base
  has_many :accesses
  has_many :users, through: :accesses
end

class Access < ActiveRecord::Base
  belongs_to :user
  belongs_to :store
end

对应的架构是

ActiveRecord::Schema.define(version: 20140108102103) do

  create_table "accesses", force: true do |t|
    t.integer  "user_id"
    t.integer  "store_id"
    t.string   "permission"
    t.datetime "created_at"
    t.datetime "updated_at"
  end

  create_table "stores", force: true do |t|
    t.string   "tin"
    t.text     "address"
    t.datetime "created_at"
    t.datetime "updated_at"
    t.string   "store_name"
    t.float    "credit"
  end

  create_table "users", force: true do |t|
    t.string   "email",                  default: "", null: false
    t.string   "encrypted_password",     default: "", null: false
    t.string   "reset_password_token"
    t.datetime "reset_password_sent_at"
    t.datetime "remember_created_at"
    t.integer  "sign_in_count",          default: 0,  null: false
    t.datetime "current_sign_in_at"
    t.datetime "last_sign_in_at"
    t.string   "current_sign_in_ip"
    t.string   "last_sign_in_ip"
    t.datetime "created_at"
    t.datetime "updated_at"
  end

  add_index "users", ["email"], name: "index_users_on_email", unique: true
  add_index "users", ["reset_password_token"], name: "index_users_on_reset_password_token", unique: true

end

现在，当我查询时 User.first.stores

ActiveRecord::HasManyThroughAssociationNotFoundError: Could not find the association :accesss in model User

有谁知道我为什么会收到此错误？

Answer 1

我有点在黑暗中拍摄，但请尝试：

# config/initializers/inflections.rb
ActiveSupport::Inflector.inflections do |inflect|
  inflect.irregular 'access', 'accesses'
end

Answer 2

我已将您的所有代码复制到一个新项目中。

 => #<User id: 1, email: "test@test.com", encrypted_password: "", reset_password_token: nil, reset_password_sent_at: nil, remember_created_at: nil, sign_in_count: 0, current_sign_in_at: nil, last_sign_in_at: nil, current_sign_in_ip: nil, last_sign_in_ip: nil, created_at: "2014-01-08 16:52:01", updated_at: "2014-01-08 16:52:01"> 
 2.0.0-p353 :004 > User.first
 User Load (0.2ms)  SELECT "users".* FROM "users" ORDER BY "users"."id" ASC LIMIT 1
 => #<User id: 1, email: "test@test.com", encrypted_password: "", reset_password_token: nil, reset_password_sent_at: nil, remember_created_at: nil, sign_in_count: 0, current_sign_in_at: nil, last_sign_in_at: nil, current_sign_in_ip: nil, last_sign_in_ip: nil, created_at: "2014-01-08 16:52:01", updated_at: "2014-01-08 16:52:01"> 
 2.0.0-p353 :005 > User.first.stores
 User Load (0.2ms)  SELECT "users".* FROM "users" ORDER BY "users"."id" ASC LIMIT 1
 Store Load (0.2ms)  SELECT "stores".* FROM "stores" INNER JOIN "accesses" ON "stores"."id" = "accesses"."store_id" WHERE "accesses"."user_id" = ?  [["user_id", 1]]
 => #<ActiveRecord::Associations::CollectionProxy []>

一切正常。Rails 4.0.1，Ruby 2.0.0-p353。似乎问题出在其他一些代码中。或者是拼写错误，但我已将代码直接从这里复制到新模型中。

也只是盲打：您是否将每个模型存储在单独的文件中？