Rails 3.2.13 / 设计 2.2.3：方法“authenticate_scope！”抛出错误：参数数量错误（1 代表 0）

Question

我使用 Devise (2.2.3) 并尝试使用此 jQuery ajax 调用为用户加载“编辑”表单：

$.ajax({
  type: 'GET',
  url: '/users/edit',
  data: {
    id: id
  }
});

这将调用此 before_filter...

prepend_before_filter :authenticate_scope!, :only => [:edit, :update, :destroy]

...来自 gem 文件...

devise/app/controllers/devise/registrations_controller.rb

(see: https://github.com/plataformatec/devise/blob/master/app/controllers/devise/registrations_controller.rb)

最终调用的方法是：

# Authenticates the current scope and gets the current resource from the session.
def authenticate_scope!
  send(:"authenticate_#{resource_name}!"), :force => true)
  self.resource = send(:"current_#{resource_name}")
end

我得到的错误是：

ArgumentError at /users/edit
============================

> wrong number of arguments (1 for 0)

(gem) devise-2.2.3/app/controllers/devise/registrations_controller.rb, line 116
-------------------------------------------------------------------------------

``` ruby
  111       signed_in_root_path(resource)
  112     end
  113   
  114     # Authenticates the current scope and gets the current resource from the session.
  115     def authenticate_scope!
> 116       send(:"authenticate_#{resource_name}!", :force => true)
  117       self.resource = send(:"current_#{resource_name}")
  118     end
  119   end
```

但是当我删除“:force => true”时，错误就消失了：

# Authenticates the current scope and gets the current resource from the session.
def authenticate_scope!
  send(:"authenticate_#{resource_name}!"))  # deleted: :force => true
  self.resource = send(:"current_#{resource_name}")
end

所以我想知道 ":force => true" 是什么意思...为什么当我把它留在原地时会出现错误？ 我想像这样对 gem 代码进行猴子补丁是个坏主意。但是我还能做些什么来避免错误呢？

感谢您的帮助！

Answer 1

想通了：问题是我重写了方法...

def authenticate_user!
  # do some stuff
  # of my own here

  # then hand over to Devise's method
  super
end

...在应用程序控制器中。但它必须是这样的：

def authenticate_user!(options={})
  # do some stuff
  # of my own here

  # then hand over to Devise's method
  super(options)
end

希望有一天能对某人有所帮助……