如何使用户的个人资料链接在索引页面中工作

Question

我的问题涉及用户的index.html.erb，其代码发布在此帖的底部。从模型中可以看出，个人资料belongs_to用户。

我正在尝试在用户index.html.erb中找到用户个人资料的功能链接。

显然它没有工作因此这个问题。我得到的错误是：用户#index

中的`ActionController :: UrlGenerationError

我知道user_profile_path本身就是一条功能路径。但是，由于我将其插入用户的index.html.erb页面而不是个人资料的index.html.erb页面，因此它比平时更加​​诡异？

如何使用户的个人资料链接有效？

感谢您的帮助。 `

用户

class User < ApplicationRecord
    has_many :profiles
end

配置文件

class Profile < ApplicationRecord
  belongs_to :user
end

个人资料控制器

class ProfilesController < ApplicationController
  before_action :set_profile, only: [:show, :edit, :update, :destroy]

  # GET /profiles
  # GET /profiles.json
  def index
    @user = User.find(params[:user_id])
    @profiles = @user.profiles
  end

  # GET /profiles/1
  # GET /profiles/1.json
  def show
    @user = User.find(params[:user_id])
    @profile = @user.profiles.find(params[:id])

     respond_to do |format|
      format.html # show.html.erb
    end
  end

  # GET /profiles/new
  def new
    @user = User.find(params[:user_id])
    @profile = @user.profiles.build
  end

  # GET /profiles/1/edit
  def edit
    @user = User.find(params[:user_id])
    @profile = @user.profiles.find(params[:id])
  end

  # POST /profiles
  # POST /profiles.json
  def create
    @user = User.find(params[:user_id])
    @profile = @user.profiles.new(profile_params)

    respond_to do |format|
      if @profile.save
        format.html { redirect_to @profile.user, notice: 'Profile was successfully created.' }
        format.json { render :show, status: :created, location: @profile }
      else
        format.html { render :new }
        format.json { render json: @profile.errors, status: :unprocessable_entity }
      end
    end
  end

  # PATCH/PUT /profiles/1
  # PATCH/PUT /profiles/1.json
  def update

    @user = User.find(params[:user_id])
    @profile = @user.profiles.find(params[:id])

    respond_to do |format|
      if @profile.update(profile_params)
        format.html { redirect_to @profile, notice: 'Profile was successfully updated.' }
        format.json { render :show, status: :ok, location: @profile }
      else
        format.html { render :edit }
        format.json { render json: @profile.errors, status: :unprocessable_entity }
      end
    end
  end

  # DELETE /profiles/1
  # DELETE /profiles/1.json
  def destroy

    @user = User.find(params[:user_id])
    @post = @user.profiles.find(params[:id])

    @profile.destroy
    respond_to do |format|
      format.html { redirect_to profiles_url, notice: 'Profile was successfully destroyed.' }
      format.json { head :no_content }
    end
  end

  private

    def set_user 
      @user = User.find(params[:user_id])
    end
    # Use callbacks to share common setup or constraints between actions.
    def set_profile
      @profile = @user.find(params[:id])
    end

    # Never trust parameters from the scary internet, only allow the white list through.
    def profile_params
      params.require(:profile).permit(:user_name, :user_id)
    end
end

用户个人资料

class UsersController < ApplicationController
  before_action :set_user, only: [:show, :edit, :update, :destroy]

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

  # GET /users/1
  # GET /users/1.json
  def show
  end

  # GET /users/new
  def new
    @user = User.new
  end

  # GET /users/1/edit
  def edit
  end

  # POST /users
  # POST /users.json
  def create
    @user = User.new(user_params)

    respond_to do |format|
      if @user.save
        format.html { redirect_to @user, notice: 'User was successfully created.' }
        format.json { render :show, status: :created, location: @user }
      else
        format.html { render :new }
        format.json { render json: @user.errors, status: :unprocessable_entity }
      end
    end
  end

  # PATCH/PUT /users/1
  # PATCH/PUT /users/1.json
  def update
    respond_to do |format|
      if @user.update(user_params)
        format.html { redirect_to @user, notice: 'User was successfully updated.' }
        format.json { render :show, status: :ok, location: @user }
      else
        format.html { render :edit }
        format.json { render json: @user.errors, status: :unprocessable_entity }
      end
    end
  end

  # DELETE /users/1
  # DELETE /users/1.json
  def destroy
    @user.destroy
    respond_to do |format|
      format.html { redirect_to users_url, notice: 'User was successfully destroyed.' }
      format.json { head :no_content }
    end
  end

  private
    # Use callbacks to share common setup or constraints between actions.
    def set_user
      @user = User.find(params[:id])
    end

    # Never trust parameters from the scary internet, only allow the white list through.
    def user_params
      params.require(:user).permit(:first_name, :last_name, :email)
    end
end

路线

Rails.application.routes.draw do
    root to: 'users#index'

  resources :users do 
    resources :profiles
  end
end

用户的index.html.erb

<h1>Users</h1>

<table>
  <thead>
    <tr>
      <th>First name</th>
      <th>Last name</th>
      <th>Email</th>
      <th>User Profile</th>
      <th colspan="3"></th>
    </tr>
  </thead>

  <tbody>
    <% @users.each do |user| %>
      <tr>
        <td><%= user.first_name %></td>
        <td><%= user.last_name %></td>
        <td><%= user.email %></td>
        <td><%= link_to 'User Profile', user_profile_path(user) %>
        <td><%= link_to 'Show', user %></td>
        <td><%= link_to 'Edit', edit_user_path(user) %></td>
        <td><%= link_to 'Destroy', user, method: :delete, data: { confirm: 'Are you sure?' } %></td>
      </tr>
    <% end %>
  </tbody>
</table>

<br>

<%= link_to 'New User', new_user_path %>

修改

Rake Routes

Prefix Verb   URI Pattern                                 Controller#Action
             root GET    /                                           users#index
    user_profiles GET    /users/:user_id/profiles(.:format)          profiles#index
                  POST   /users/:user_id/profiles(.:format)          profiles#create
 new_user_profile GET    /users/:user_id/profiles/new(.:format)      profiles#new
edit_user_profile GET    /users/:user_id/profiles/:id/edit(.:format) profiles#edit
     user_profile GET    /users/:user_id/profiles/:id(.:format)      profiles#show
                  PATCH  /users/:user_id/profiles/:id(.:format)      profiles#update
                  PUT    /users/:user_id/profiles/:id(.:format)      profiles#update
                  DELETE /users/:user_id/profiles/:id(.:format)      profiles#destroy
            users GET    /users(.:format)                            users#index
                  POST   /users(.:format)                            users#create
         new_user GET    /users/new(.:format)                        users#new
        edit_user GET    /users/:id/edit(.:format)                   users#edit
             user GET    /users/:id(.:format)                        users#show
                  PATCH  /users/:id(.:format)                        users#update
                  PUT    /users/:id(.:format)                        users#update
                  DELETE /users/:id(.:format)                        users#destroy

编辑两位参考

下面的几个答案

Answer 1

从路线的外观

user_profile GET /users/:user_id/profiles/:id(.:format) profiles#show

您需要将用户ID和配置文件ID传递给路径。 如下所示：

<td><%= link_to 'User Profile', user_profile_path(user.id, user.profiles.first.id) %>

由于用户模型上的关系是has_many，您需要指定要链接到的配置文件（我以第一个为例）。或者您可以使用user_profiles_path

链接到所有配置文件

Answer 2

使用助手的地方并不重要。但是，由于用户has_many个人资料，您需要user_profiles_path(user)。

Answer 3

user_profile GET    /users/:user_id/profiles/:id(.:format)      profiles#show

或者你这样做。因为您需要在动作节目

上传递个人资料ID

<td><%= link_to 'User Profile', user_profile_path(user, user.profiles.first) %>

或者您必须更改为索引页面。

<td><%= link_to 'User Profile', user_profiles_path(user) %>

因为你与个人资料的关系是to_many，你必须确定动作显示你正在编辑的个人资料。

也许您与个人资料的关系应该是has_one。像一个用户有一个配置文件

Answer 4

由于用户拥有多个配置文件，因此您无法指定单个用户配置文件的路径，而无需指定哪个配置文件。单个用户配置文件的路径帮助程序需要一个用户实例和一个特定的用户配置文件实例。在不知道您是想要显示用户的所有配置文件还是仅显示一个配置文件的情况下，我建议运行rake routes并查看结果以找到您需要的帮助程序名称。

根据您的路线，如果您想使用user_profile_path，我认为这是正确的电话：

user_profile_path(user, profile) # profile must be a valid instance of Profile, eg. `user.profiles.first`

如果您想要链接到用户的所有配置文件，这应该是正确的呼叫：

user_profiles_path(user)

但是，那么你想在ProfilesController＃index中检查：user_id参数，并只显示该用户的配置文件。

示例：

if params[:user_id].present?
  user = User.find(params[:user_id))
  @profiles = user.profiles
else
  @profiles = Profile.all
end