使用Devise和Rails访问自定义参数4 [英] Accessing Custom Parameters when using Devise and Rails 4

问题描述

我正在使用teamtreehouse教程学习rails。本教程使用3.1，但我试图学习4.0，结果我遇到了一个困难，大概是因为rails 4强制使用强参数。我有两个模型，一个用户模型和一个状态模型。我已经使用devise来为用户创建身份验证，并且包括新的参数。它们是：first_name，：last_name和：profile_name。我已经创建了用户和状态之间的关系。

目前用户注册新参数正在运行;我可以使用例如current_user.last_name访问它们。但是，我想在状态索引视图上显示创建帖子的用户的profile_name（每个用户还没有单独的页面）。我想使用

  status.user.profile_name 
  

但它只显示空白。如果我做
status.user.email（这是一个预先配置的设计参数），它显示没有问题。我猜我必须在某些控制器中列出这些参数，但是我不知道在哪里或怎么样。
谢谢

解决方案

欢迎在船上。 :) Rails是惊人的，你会真的很喜欢这个旅程。 ：）

我想，在这里你会发现你的答案： https://github.com/plataformatec/devise/tree/rails4#strong-parameters

根据上述链接，我想你应该在你的ApplicationController中插入这样的东西：

  class ApplicationController< ActionController :: Base 
 before_filter：configure_permitted_pa​​rameters，如果：：devise_controller？ 
 
 protected 
 
 def configure_permitted_pa​​rameters 
 devise_parameter_sanitizer.for（：user）{| u | u.permit（：profile_name）} 
 end 
 end 
  

而且我已经在前一个问题中建议...
使用Rails 4.0和Devise的强参数

...您可以创建自己的控制器，这可以扩展设计自己的控制器。有一个要点：$ b​​ $ b https://gist.github.com/bluemont/e304e65e7e15d77d3cb9

Devise文档中的一些更多细节： https://github.com/plataformatec/devise/tree/rails4#configuring-controllers

希望它可以帮助，让我知道发生了什么。

I am learning rails using the teamtreehouse tutorial. The tutorial uses 3.1 but I am trying to learn 4.0, and as a result I have run into a difficulty presumably because rails 4 forces of the use of strong parameters. I have two models, a users model and a statuses model. I have used devise to create authentication for users, and have included new parameters. They are :first_name, :last_name, and :profile_name. I have created a relationship between users and statuses.

Currently the user sign-up with the new parameters is working; i can access them using for instance current_user.last_name. However, I want to show the profile_name of the user that created the post on the statuses index view(each user does not yet have a separate page). I want to do this using

status.user.profile_name

However it just shows up blank. If I do status.user.email(which is a preconfigured devise parameter), it shows up no problem. I am guessing I have to whitelist these parameters in some controller but I don't know where or how. Thanks

解决方案

welcome on board. :) Rails is just amazing and you will really enjoy this journey. :)

I think, here you will find your answer: https://github.com/plataformatec/devise/tree/rails4#strong-parameters

Based on above link, I think you should insert something like this in your ApplicationController:

class ApplicationController < ActionController::Base
  before_filter :configure_permitted_parameters, if: :devise_controller?

  protected

  def configure_permitted_parameters
    devise_parameter_sanitizer.for(:user) { |u| u.permit(:profile_name) }
  end
end

And I already suggested in a previous question... Strong parameters with Rails 4.0 and Devise

...that you can create your own controller which could extend devise own controller. There is a gist for that: https://gist.github.com/bluemont/e304e65e7e15d77d3cb9

A little bit more details in Devise doc: https://github.com/plataformatec/devise/tree/rails4#configuring-controllers

Hope it could help, and let me know what happened.

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