Devise认证未定义方法'to_sym'？ [英] Devise authentication undefined method 'to_sym'?

问题描述

我试图使用devise为LDAP活动目录设置身份验证系统。 （遵循教程 http://wiki.phys.ethz.ch/readme/devise_with_ldap_for_authentication_in_rails_3

Im trying to set up an authentication system against an LDAP active directory using devise. (following the tutorial http://wiki.phys.ethz.ch/readme/devise_with_ldap_for_authentication_in_rails_3

Ive遵循指令，当我尝试运行应用程序时，收到以下错误：

Ive followed the instruction exactly, and when i try running the app im getting the following error:

undefined method `to_sym' for #<ActiveModel::MassAssignmentSecurity::WhiteList:0x2a4abd50

我甚至不知道哪里 to_sym 是因为它不告诉我！任何人都知道这个的原因或至少如何找到包含此行的文件？
* ** * ** * 更新 > * ** * ** *

And i dont even know where to_sym is because it doesnt tell me! Anyone know the cause of this or at least how to find the file that contains this line? *******UPDATE*******

rb模型：

class User < ActiveRecord::Base
  # Include default devise modules. Others available are:
  # :token_authenticatable, :encryptable, :confirmable, :lockable, :timeoutable
and :omniauthable
  devise :ldap_authenticatable,
       :rememberable, :trackable,

  # Setup accessible (or protected) attributes for your model
  attr_accessible(:login, :password, :password_confirmation, :remember_me)
end

推荐答案

看起来在 devise 方法的最后一个参数后面有一个尾逗号：

It looks like there is a trailing comma after the last argument to the devise method:

devise :ldap_authenticatable, :rememberable, :trackable,

然后，ruby解释器假设 attr_accessible 是该方法的下一个参数。正确的参数类型是一个符号，所以它调用 to_sym 在 attr_accessible ，这是一种方法，没有

The ruby interpreter then assumes that attr_accessible is the next argument to the method. The proper argument type is a symbol, so it calls to_sym on attr_accessible, which is a method and does not have a to_sym method and raises the error.

删除尾随的逗号，它应该可以工作！

Remove the trailing comma and it should work!

这篇关于Devise认证未定义方法'to_sym'？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！