Rails对regex的理解不同于rubular

Question

我想做一个简单的基于正则表达式的电子邮件验证：

class EmailValidator < ActiveModel::EachValidator
  def validate_each(record, attribute, value)
    unless value =~ /\A([\S]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\z/i
      record.errors[attribute] << (options[:message] || 'is not an email')
    end
  end
end

这是在rails文档中提到的。我在rails中检查过，一切正常，但在rails中，本地地址中带圆点的电子邮件由于某种原因(john.doe@example.com)而无法通过验证。奇怪的是，它接受任何其他非空格字符(例如，&^%#!*()，当然不包括@)。

class User < ApplicationRecord
  validates :email,      presence: true, length: { maximum: 64 },
                         uniqueness: { case_sensitive: false }, email: true
  validates :password,   presence: true, length: { in: 8..64 }
  validates :first_name, length: { in: 2..16 }, allow_blank: true
  validates :last_name,  length: { in: 2..32 }, allow_blank: true
  validates :student_id, length: { in: 5..6 }, allow_blank: true,
                         numericality: true
end

和失败的测试：

  test 'should validate email with special characters in local address' do
    @user.email = 'john.doe@domain.com'
    assert @user.valid?
  end

整个user_test.rb

class UserTest < ActiveSupport::TestCase
  def setup
    @user = User.new(email: 'johndoe@domain.com', password: 'password12',
                     first_name: 'John', last_name: 'Doe',
                     student_id: '112233')
  end

  # Presence validation
  test 'user validate user' do
    assert @user.valid?
  end

  test 'should not validate empty email' do
    @user.email = ''
    assert_not @user.valid?
  end

  test 'should not validate blank password' do
    @user.password = '     '
    assert_not @user.valid?
  end

  test 'should validate blank first name' do
    @user.first_name = ''
    assert @user.valid?
  end

  test 'should validate blank last name' do
    @user.last_name = ''
    assert @user.valid?
  end

  test 'should validate blank student id' do
    @user.student_id = ''
    assert @user.valid?
  end

  # Length validation
  test 'should not validate too long email' do
    @user.password = 'a' * 65
    assert_not @user.valid?
  end

  test 'should not validate too long password' do
    @user.password = 'a' * 65
    assert_not @user.valid?
  end

  test 'should not validate too short password' do
    @user.password = 'a' * 7
    assert_not @user.valid?
  end

  test 'should not validate too long first name' do
    @user.first_name = 'a' * 17
    assert_not @user.valid?
  end

  test 'should not validate too short first name' do
    @user.first_name = 'a'
    assert_not @user.valid?
  end

  test 'should not validate too long last name' do
    @user.last_name = 'a' * 33
    assert_not @user.valid?
  end

  test 'should not validate too short last name' do
    @user.last_name = 'a'
    assert_not @user.valid?
  end

  test 'should not validate too long student id' do
    @user.student_id = '1234567'
    assert_not @user.valid?
  end

  test 'should not validate too short student id' do
    @user.student_id = '1234'
    assert_not @user.valid?
  end

  # Email format validation
  test 'should not validate email with wrong format' do
    @user.email = 'john.doe@domain'
    assert_not @user.valid?
  end

  test 'should validate email with special characters in local address' do
    @user.email = 'john.doe@domain.com'
    assert @user.valid?
  end

  test 'should not validate email with special characters in domain' do
    @user.email = 'john.doe@dom_ain.com'
    assert_not @user.valid?
  end

  # Numeric-only validation
  test 'should not validate student id with non-numeric characters' do
    @user.student_id = 'ab123c'
    assert_not @user.valid?
  end

  # Uniqueness validation
  test 'should not validate duplicated email' do
    @copycat_user = @user.dup
    @user.save
    assert_not @copycat_user.valid?
  end
end

你知道这种奇怪行为的原因是什么吗？

Answer 1

我拿到解决方案了。

我的夹具的参数与

@user = User.new(email: 'johndoe@domain.com', password: 'password12',
                 first_name: 'John', last_name: 'Doe',
                 student_id: '112233')

由于电子邮件必须是唯一的，它给了我一个错误，即电子邮件已经被占用。