admincontroller使用錯誤的幫手創建行動

Question

我想通過我的管理員控制器創建一個管理員實例創建行動，但我不斷收到一個錯誤，指出：

ActiveRecord::RecordNotFound in AdminsController#show: Couldn't find User with id=4

跟蹤表明，它正試圖使用會話幫助程序（用戶）而不是相應的管理員幫助程序。

app/helpers/sessions_helper.rb:20:in `current_user' 
app/helpers/sessions_helper.rb:12:in `signed_in?' 
app/views/layouts/application.html.erb:13:in 
app_views_layouts_application_html_erb__1013605049_93953830 

我可以正確登錄並創建管理員。我只是覺得這個問題與我的管理員控制器中的redirect_to @admin有關，儘管我不確定。

如何設置它，以便我的管理員控制器使用adminsessions助手而不是會話助手？任何幫助將不勝感激。

adminsessions_controller.rb

class AdminsessionsController < ApplicationController 
    def new 
    @title = "Log in" 
    end 

    def show 
    @title = "Admin session" 
    end 

    def create 
    admin = Admin.authenticate(params[:adminsession][:email], 
           params[:adminsession][:password]) 
    if admin.nil? 
     flash.now[:error] = "Invalid email/password combination." 
     @title = "Log in" 
     render 'new' 
    else 
     sign_in admin 
     redirect_to admin 
    end 
    end 

    def destroy 
    sign_out 
    redirect_to root_path       
    end 
end 

admins_controller.rb

class AdminsController < ApplicationController 

    def index 
    @user = User.all 
    end 

    def show 
    @admin = Admin.find(params[:id]) 
    end 

    def new 
    @admin = Admin.new 
    @title = "New admin" 
    end 

    def create 
    @admin = Admin.new(params[:admin]) 
    if @admin.save 
     sign_in @admin 
     flash[:success] = "Welcome admin!" 
     redirect_to @admin 
    else 
     @title = "New admin" 
     render 'new' 
    end 
    end 
end 

new.html.erb（形式，其中創建新的用戶）

<div id="signupform_new"> 
    <%= form_for(@admin) do |f| %> 
    <div class="field"> 
    <%= f.label :username %> 
    <%= f.text_field :name, :class => "round" %> 
    </div> 
    <div class="field"> 
    <%= f.label :email %> 
    <%= f.text_field :email, :class => "round" %> 
    </div> 
    <div class="field"> 
     <%= f.label :password %> 
     <%= f.password_field :password, :class => "round" %> 
    </div> 
    <div class="field"> 
     <%= f.label :password_confirmation, "Confirmation" %> 
     <%= f.password_field :password_confirmation, :class => "round" %> 
    </div> 
    <div class="action"> 
     <%= button_tag "", :class => "acctSubmit" %> 
    </div> 
    <% end %> 
</div> 

sessions_helper.rb

module SessionsHelper 

    def sign_in(user) 
    session[:user_id] = user.id 
    self.current_user = user 
    end 


    def signed_in? 
    !current_user.nil? 
    end 

    def current_user=(user) 
    @current_user = user 
    end 

    def current_user 
    @current_user ||= User.find(session[:user_id]) if session[:user_id] 
    end 

    def current_user?(user) 
    user == current_user 
    end 

def authenticate 
    deny_access unless signed_in? 
end  

def sign_out 
    session[:user_id] = nil 
    self.current_user = nil 
end 

def redirect_back_or(default) 
    redirect_to(session[:return_to] || default) 
    clear_return_to 
end 

def deny_access 
    store_location 
    redirect_to login_path, :notice => "Please log in to access this page." 
end 

private 

    def store_location 
    session[:return_to] = request.fullpath 
    end 

    def clear_return_to 
    session[:return_to] = nil 
    end 
end 

adminsessions_helper.rb

module AdminsessionsHelper 


def sign_in(admin) 
    adminsession[:admin_id] = admin.id 
    self.current_admin = admin 
end 


def signed_in? 
    !current_admin.nil? 
end 

def current_admin=(admin) 
    @current_admin = admin 
end 

def current_admin 
    @current_admin ||= Admin.find(adminsession[:admin_id]) if adminsession[:admin_id] 
end 

def current_admin?(admin) 
    admin == current_admin 
end 

def authenticate 
    deny_access unless signed_in? 
end 

def sign_out 
    adminsession[:admin_id] = nil 
    self.current_admin = nil 
end 

def redirect_back_or(default) 
    redirect_to(adminsession[:return_to] || default) 
    clear_return_to 
end 

def deny_access 
    store_location 
redirect_to login_path, :notice => "Please log in to access this page." 
end 

private 

    def store_location 
    adminsession[:return_to] = request.fullpath 
    end 

    def clear_return_to 
    adminsession[:return_to] = nil 
    end 
end 

Answer 1

所有助手（默認情況下）混合，並適用於所有的控制器。看起來你正在使用的方法應該是受保護的，或者是你的控制器的私有成員。您可以讓他們的輔助方法在您的視圖中可用，即helper_method :signed_in?。

就我個人而言，我從來不喜歡幫助者缺乏命名空間。我喜歡主持人模式好得多（見RailsCasts Pro）。