Rails 4错误-Rails找不到'id'= index的用户 [英] Rails 4 error - rails Couldn't find User with 'id'=index

问题描述

我正在尝试在Rails 4中制作一个应用.

I am trying to make an app in Rails 4.

我在这篇文章中尝试遵循Cyber​​Dude的建议:

I'm trying to follow CyberDude's advice in this post:

使用Rolify定义角色

我陷入了在用户/视图文件中为用户建立索引的部分.

I'm getting stuck at the part where I make an index for users in the user/views file.

我收到一条错误消息:

ActiveRecord::RecordNotFound in UsersController#show
Couldn't find User with 'id'=index

Extracted source (around line #69):
67
68
69
70
71
72

  private
    def set_user
      @user = User.find(params[:id])
    end

    def user_params

我无法理解此错误消息.其他具有类似消息的人似乎在需要:id的其他操作(例如#show)中出现问题.我认为索引不需要和id(但是我不确定).

I can't understand this error message. Others with similar messages seem to have problems arising in other actions (like #show) where an :id is required. I think index doesn't need and id (but I'm not sure about that).

我有:

用户的控制器(我的控制器中还有一个名为用户"的文件夹，它具有用于注册和omniauth回调的控制器):

User's controller (I also have a folder in my controllers called "user" and it has controllers for regirations and omniauth callbacks):

class UsersController < ApplicationController

before_action :set_user, only: [:index, :show, :edit, :update, :finish_signup, :destroy]

  def index
    # if params[:approved] == "false"
    #   @users = User.find_all_by_approved(false)
    # else
      @users = User.all
    # end

  end

  # GET /users/:id.:format
  def show
    # authorize! :read, @user
  end

  # GET /users/:id/edit
  def edit
    # authorize! :update, @user
  end

  # PATCH/PUT /users/:id.:format
  def update
    # authorize! :update, @user
    respond_to do |format|
      if @user.update(user_params)
        sign_in(@user == current_user ? @user : current_user, :bypass => true)
        format.html { redirect_to @user, notice: 'Your profile was successfully updated.' }
        format.json { head :no_content }
      else
        format.html { render action: 'edit' }
        format.json { render json: @user.errors, status: :unprocessable_entity }
      end
    end
  end

  # GET/PATCH /users/:id/finish_signup
  def finish_signup
    # authorize! :update, @user


    if request.patch? && params[:user] #&& params[:user][:email]
      if @user.update(user_params)
        @user.skip_reconfirmation!
        sign_in(@user, :bypass => true)
        redirect_to root_path, notice: 'Your profile was successfully updated.'
        # redirect_to [@user, @user.profile || @user.build_profile]
        # sign_in_and_redirect(@user, :bypass => true)
      else
        @show_errors = true
      end
    end
  end

  # DELETE /users/:id.:format
  def destroy
    # authorize! :delete, @user
    @user.destroy
    respond_to do |format|
      format.html { redirect_to root_url }
      format.json { head :no_content }
    end
  end

  private
    def set_user
      @user = User.find(params[:id])
    end

    def user_params
      # params.require(:user).permit(policy(@user).permitted_attributes)
      accessible = [ :first_name, :last_name, :email, :avatar, {role_ids: []} ] # extend with your own params
      accessible << [ :password, :password_confirmation ] unless params[:user][:password].blank?
      # accessible << [:approved] if user.admin
      params.require(:user).permit(accessible)
    end

end

我有一个用户索引视图:

I have a users index view:

<div class="col-xs-10 col-xs-offset-1" style="margin-left:10%; margin-right:10%">
    <% Users.each do |user| %>
      <div class="row">
            <div class="col-xs-5">
                <%= link_to "#{user.full_name}", user %>
            </div>
            <div class="col-xs-5">
                <%= link_to "#{user.email}", user %>
            </div>
            <div class="col-xs-2">
                 <%= link_to "edit", edit_user_path(user) %>
            </div>
    </div> 
    <% end %>   

尝试此操作时，出现上面发布的错误.

When I try this, I get the error I posted above.

任何人都可以看到我做错了什么，或者破译了错误消息吗?

Can anyone see what I've done wrong, or decipher the error message?

推荐答案

我认为您正在发生错误，因为:index位于before_action :set_user, only: [:index, :show, :edit, :update, :finish_signup, :destroy]中.只需从列表中删除:index，即可解决此错误. params哈希在index路由上不包含:id键.查阅本指南有关Rails路由.

I think that your error is occuring because :index is in before_action :set_user, only: [:index, :show, :edit, :update, :finish_signup, :destroy]. Simply remove :index from the list and that should take care of this error. The params hash does not contain an :id key on the index route. Check out this guide on Rails routing.

在这种情况下，使用index动作来捕获所有用户，以便它们可以显示在索引页面上.例如，在我的一个应用程序中，我具有以下内容:

The index action is used, in this case, to grab all of the users so that they can be displayed on your index page. For example in one of my apps I have the following:

class UsersController < ApplicationController

  before_action :set_user, only: [:show, :edit, :update, :destroy]

  # GET /users
  def index
    @users = User.all
  end

  # omitted code

  def set_user
    @user = User.find(params[:id])
  end

end

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