Ruby on rails 运行rails控制台时出现ActiveRecord错误

当我启动rails控制台并想要测试我刚刚创建的模型模板时，rails控制台无法创建我的新模型实例

yellow:maw thierry$ rails console
Running via Spring preloader in process 17717
Loading development environment (Rails 5.1.0)
>> Account.create(name: "John Doe", email: "john.doe@example.com", password: "1234ABCD", password_confirmation: "1234ABCD")
ActiveRecord::StatementInvalid: PG::UndefinedTable: ERROR:  relation "accounts" does not exist
LINE 8:                WHERE a.attrelid = '"accounts"'::regclass
                                          ^
:               SELECT a.attname, format_type(a.atttypid, a.atttypmod),
                     pg_get_expr(d.adbin, d.adrelid), a.attnotnull, a.atttypid, a.atttypmod,
                     c.collname, col_description(a.attrelid, a.attnum) AS comment
                FROM pg_attribute a
                LEFT JOIN pg_attrdef d ON a.attrelid = d.adrelid AND a.attnum = d.adnum
                LEFT JOIN pg_type t ON a.atttypid = t.oid
                LEFT JOIN pg_collation c ON a.attcollation = c.oid AND a.attcollation <> t.typcollation
               WHERE a.attrelid = '"accounts"'::regclass
                 AND a.attnum > 0 AND NOT a.attisdropped
               ORDER BY a.attnum

    from (irb):1
>> 

正如您所看到的，我已经执行了两次请求：

一个是在生成的模型名称中使用单引号+双引号。 只有单引号的。 有人遇到过这个错误吗？你是怎么解决的

提前感谢您的帮助

背景：

Rails 5.1.0 马科斯塞拉酒店 使用Rbenv。 使用Ruby 2.4.1p111。 PG适配器：0.20.0 在模型目录中：

yellow:maw thierry$ ls -al app/models/
total 24
drwxr-xr-x   6 thierry  staff  204  7 mai 14:08 .
drwxr-xr-x  10 thierry  staff  340  5 mai 16:23 ..
-rw-r--r--@  1 thierry  staff  531  8 mai 12:44 account.rb
-rw-r--r--   1 thierry  staff   78  5 mai 16:23 application_record.rb
drwxr-xr-x   3 thierry  staff  102  5 mai 16:23 concerns
-rw-r--r--@  1 thierry  staff  161  7 mai 18:41 enterprise.rb
yellow:maw thierry$

account.rb的内容：

yellow:maw thierry$ cat app/models/account.rb 
class Account < ApplicationRecord
  before_save { email.downcase! }
  validates :name, presence: true, length: { maximum: 250 }
  VALID_EMAIL_REGEX = /\A[\w+\-.]+@[a-z\d\-]+(\.[a-z\d\-]+)*\.[a-z]+\z/i
  validates :email, presence: true, length: { maximum: 255 }, format: { with: VALID_EMAIL_REGEX }, uniqueness: { case_sensitive: false }

  has_secure_password
  #This validation must be put after has_secure_password in order for the password field to be defined.
  validates :password, presence: true, length: { minimum: 6 }
end
yellow:maw thierry$ 

---

正如@Iceman在他的评论中所暗示的，这与春天有关。因此，我：

停止轨道控制台。 用弹簧挡块停止弹簧。 用ps aux | grep spring检查弹簧是否真的停止，结果是。 最后重启rails控制台。 结果是：

yellow:maw thierry$ rails console
Running via Spring preloader in process 22940
Loading development environment (Rails 5.1.0)
>> Account.create(name: "John Doe", email: "john.doe@example.com", password: "1234ABCD", password_confirmation: "1234ABCD")
   (0.1ms)  BEGIN
  Account Exists (61.2ms)  SELECT  1 AS one FROM "accounts" WHERE LOWER("accounts"."email") = LOWER($1) LIMIT $2  [["email", "john.doe@example.com"], ["LIMIT", 1]]
  SQL (0.5ms)  INSERT INTO "accounts" ("name", "email", "created_at", "updated_at", "password_digest") VALUES ($1, $2, $3, $4, $5) RETURNING "id"  [["name", "John Doe"], ["email", "john.doe@example.com"], ["created_at", "2017-05-09 08:14:29.093633"], ["updated_at", "2017-05-09 08:14:29.093633"], ["password_digest", "$2a$10$3rCS7ynWP1r8VuPRDyQmOe0Czpm6ingOX16I6./s9a5TjUxnkPSzu"]]
   (40.5ms)  COMMIT
=> #<Account id: 1, name: "John Doe", email: "john.doe@example.com", created_at: "2017-05-09 08:14:29", updated_at: "2017-05-09 08:14:29", password_digest: "$2a$10$3rCS7ynWP1r8VuPRDyQmOe0Czpm6ingOX16I6./s9a5...">
>> 

---

你重启rails控制台了吗？是的，很多次了。这可能是spring的问题吗？是的！谢谢@IcemanNot当spring第一次遇到困难时，我很难过地放弃了使用它，原因如下。

yellow:maw thierry$ cat app/models/account.rb 
class Account < ApplicationRecord
  before_save { email.downcase! }
  validates :name, presence: true, length: { maximum: 250 }
  VALID_EMAIL_REGEX = /\A[\w+\-.]+@[a-z\d\-]+(\.[a-z\d\-]+)*\.[a-z]+\z/i
  validates :email, presence: true, length: { maximum: 255 }, format: { with: VALID_EMAIL_REGEX }, uniqueness: { case_sensitive: false }

  has_secure_password
  #This validation must be put after has_secure_password in order for the password field to be defined.
  validates :password, presence: true, length: { minimum: 6 }
end
yellow:maw thierry$ 

yellow:maw thierry$ rails console
Running via Spring preloader in process 22940
Loading development environment (Rails 5.1.0)
>> Account.create(name: "John Doe", email: "john.doe@example.com", password: "1234ABCD", password_confirmation: "1234ABCD")
   (0.1ms)  BEGIN
  Account Exists (61.2ms)  SELECT  1 AS one FROM "accounts" WHERE LOWER("accounts"."email") = LOWER($1) LIMIT $2  [["email", "john.doe@example.com"], ["LIMIT", 1]]
  SQL (0.5ms)  INSERT INTO "accounts" ("name", "email", "created_at", "updated_at", "password_digest") VALUES ($1, $2, $3, $4, $5) RETURNING "id"  [["name", "John Doe"], ["email", "john.doe@example.com"], ["created_at", "2017-05-09 08:14:29.093633"], ["updated_at", "2017-05-09 08:14:29.093633"], ["password_digest", "$2a$10$3rCS7ynWP1r8VuPRDyQmOe0Czpm6ingOX16I6./s9a5TjUxnkPSzu"]]
   (40.5ms)  COMMIT
=> #<Account id: 1, name: "John Doe", email: "john.doe@example.com", created_at: "2017-05-09 08:14:29", updated_at: "2017-05-09 08:14:29", password_digest: "$2a$10$3rCS7ynWP1r8VuPRDyQmOe0Czpm6ingOX16I6./s9a5...">
>>