表单中的错误消息未正确显示导轨

Question

我正在用Rails创建一个博客应用程序。

Ruby版本-> 2.5.1 Rails版本-> 5.1.7

我有一个用于验证密码的用户模型，并且密码的确认必须匹配。

validates :password, presence: true, length: {minimum: 6, maximum: 20}

validates :password,  confirmation: {case_sensitive: true , message: "Passwords don't match"}

现在，当我使用不同的密码提交表单并得到确认时，在顶部显示的错误消息是：

2 errors found.
Password confirmation Passwords don't match
Password confirmation doesn't match Password

以及我的期望：

1 error found.
Passwords don't match

这是表单视图的代码，如果需要的话：

#The errors partial is just iterating over the user object errors and displaying them.
<%= render 'shared/errors', obj: @user %>
<div class="form-group">
  <div class="control-label col-sm-2">
    <%= f.label :password %>
  </div>
  <div class="col-sm-8">
    <%= f.password_field :password, class: "form-control", placeholder: "Enter password" %>
  </div>
</div>
<div class="form-group">
  <div class="control-label col-sm-2">
    <%= f.label :password_confirmation, 'Confirm Password' %>
  </div>
  <div class="col-sm-8">
    <%= f.password_field :password_confirmation, class: "form-control", placeholder: "Enter password again" %>
  </div>
</div>

更新的用户模型：

class User < ActiveRecord::Base

  has_many :articles
  validates :username, presence: true, uniqueness: {case_sensitive: false},
    length: {minimum: 3, maximum: 25}

  VALID_EMAIL_REGEX = /\A[\w+\-.]+@[a-z\d\-.]+\.[a-z]+\z/i

  validates :email, presence: true, length: { maximum: 105 },
    uniqueness: { case_sensitive: false },
    format: { with: VALID_EMAIL_REGEX }

  validates :password, presence: true, length: {minimum: 6, maximum: 20}

  validate :password_check

  before_save { self.email = email.downcase }

  has_secure_password

  private
  def password_check
    # Check for nils and blanks
    errors.add(:base, "Passwords don't match") if password != password_confirmation
  end

end

Answer 1

我认为activerecord的错误消息和您添加的自定义错误消息是同时打印的。当您从验证中删除自定义错误消息时，我认为问题会解决。

如果要添加自定义错误消息，请如下更改default activerecord error message：

# config/locales/en.yml
en:
  activerecord:
    errors:
      models:
        user:
          attributes:
            password:
              confirmation: "don't match"

更新

如果上述方法不能解决问题，则可以编写自定义验证：

删除validates :password, confirmation: ..

validate :confirm_password

private
def confirm_password
  return if password == password_confirmation
  errors.add(:password, "don't match")
end

Answer 2

因为默认为sensitive_case: true，所以不需要配置选项，如果导致出现双重错误消息，则为message。

validates :password, confirmation: true将给您

1 error found.
Password confirmation doesn't match Password

如果您确实需要该自定义消息，则应编写自己的validate方法并将错误添加到base：

# validates :password,  confirmation: {case_sensitive: true , message: "Passwords don't match"}
validate :password_check

private
def password_check
  # Check for nils and blanks
  errors.add(:base, "Passwords don't match") if password != password_confirmation
end