Question

我创建了一个用户然后去了user.save并得到了这个=＆gt;虚假消息......我看到它说“用户存在”，但是当我去users = User.all时，只有一个用户我创建了一小段时间。那么为什么说这个用户存在？

irb(main):003:0> user = User.new(:screen_name => "jeff holmes", :email => "jeffholmes@gmail.com", :password => "123456")
/Users/coreyholmes/RubymineProjects/worklink/app/models/user.rb:22: warning: regular expression has ']' without escape: /\A[A-Z0-9._%-]+@(A-Z0-9-]+\.)+[A-Z]{2,4}\z/
=> #<User id: nil, screen_name: "jeff holmes", email: "jeffholmes@gmail.com", password: "123456">
irb(main):004:0> user.save
   (0.2ms)  BEGIN
  User Exists (0.3ms)  SELECT  1 AS one FROM `users` WHERE `users`.`screen_name` = BINARY 'jeff holmes' LIMIT 1
  User Exists (0.2ms)  SELECT  1 AS one FROM `users` WHERE `users`.`email` = BINARY 'jeffholmes@gmail.com' LIMIT 1
/Users/coreyholmes/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activemodel-4.2.1/lib/active_model/validations/format.rb:8: warning: regular expression has ']' without escape: /\A[A-Z0-9._%-]+@(A-Z0-9-]+\.)+[A-Z]{2,4}\z/
   (0.1ms)  ROLLBACK
=> false

更新这是验证码

class User < ActiveRecord::Base

  # Max and min lengths for all fields
  SCREEN_NAME_MIN_LENGTH = 4
  SCREEN_NAME_MAX_LENGTH = 20
  PASSWORD_MIN_LENGTH = 4
  PASSWORD_MAX_LENGTH = 20
  EMAIL_MAX_LENGTH = 50
  SCREEN_NAME_RANGE = SCREEN_NAME_MIN_LENGTH...SCREEN_NAME_MAX_LENGTH
  PASSWORD_RANGE = PASSWORD_MIN_LENGTH...PASSWORD_MAX_LENGTH

  validates_uniqueness_of :screen_name, :email
  validates_length_of :screen_name, :within => SCREEN_NAME_RANGE
  validates_length_of :password, :within => PASSWORD_RANGE
  validates_length_of :email, :maximum => EMAIL_MAX_LENGTH

  validates_format_of :screen_name,
      :with => /\A[A-Z0-9_]*\z/,
      :message => 'must contain only letters, ' + 'numbers, and underscores'

  validates_format_of :email,
      :with => /\A[A-Z0-9._%-]+@(A-Z0-9-+\.)+[A-Z]{2,4}\z/,
      :message => 'common... enter a real email address'

end

Answer 1

我怀疑这是问题的一部分：

/\A[A-Z0-9._%-]+@(A-Z0-9-]+\.)+[A-Z]{2,4}\z/
#                ↑
#   Is this supposed to be "(["?

P.S。这也是验证电子邮件地址的错误正则表达式。首先，现在有大量TLD超过四个字符。

User.save返回为：User Exists =＆gt;假

1 个答案: