1  

It's much better to inspect params itself if you are unsure about the presence of a field or where it is located in the hash returned by params.

如果您不确定某个字段的存在或它位于params返回的散列中的位置，那么检查params本身就更好了。

When you use form_for helper, the fields when submitted will be wrapped under the lowercase model-name of the resource (or simply the name) you pass in for form_for. So in your case, since you have given the :user name, the hash returned by params will contain a key 'user' under which all of your fields will be present with their given structure. So you should use :

当您使用form_for helper时，提交时的字段将在传递给form_for的资源的小写模型名称(或简单的名称)下包装。因此，在您的例子中，由于您已经给出了:user name, params返回的散列将包含一个键“user”，在这个键下，您的所有字段将以其给定的结构显示。所以你应该使用:

params[:user][:current_password]

1  

Try using params[:user][:current_password] in your controller.

尝试在控制器中使用params[:user][:current_password]。

1  

@cyonder, since you are new to Rails/Ruby its our responsibility to at least give you some idea that may help you:

@cyonder，由于您是Rails/Ruby的新手，我们的责任是至少给您一些可能对您有所帮助的想法:

Debugging in Rails:

We use debugging tools like pry, bye-bug

我们使用像pry, bye-bug这样的调试工具

Using these tools (pry) you can put break-points in code so that the server execution stops at that point and you can analyse the object's value in that particular point of execution.

使用这些工具(pry)，您可以在代码中放置断点，这样服务器执行就会停止，您可以分析对象在特定执行点的值。

For Example:

例如:

elsif params[:attribute] == 'password'
      binding.pry

      if @profile.password_match?(params[:current_password])
        binding.pry
      else
        binding.pry
        render 'edit'
      end
    end

When you send HTTP request; binding.pry stops execution and you can get access to rails-console in the terminal you are running server rails s

发送HTTP请求时;绑定。pry停止执行，您可以访问正在运行服务器rails s的终端中的rails控制台

Something like this

像这样的东西

[1, 10] in /PathTo/project/app/controllers/articles_controller.rb
    3:
    4:   # GET /articles
    5:   # GET /articles.json
    6:   def index
    7:     binding.pry
=>  8:     @articles = Article.find_recent
    9:
   10:     respond_to do |format|
   11:       format.html # index.html.erb
   12:       format.json { render json: @articles }

(pry)

After this I hope you can debug your app your self.
For more info see

在此之后，我希望您可以调试您的应用程序。更多信息见

http://guides.rubyonrails.org/debugging_rails_applications.html#debug http://railscasts.com/episodes/280-pry-with-rails

http://guides.rubyonrails.org/debugging_rails_applications.html http://railscasts.com/episodes/280-pry-with-rails调试