在 rails 中调用应用程序控制器中的当前用户

Call the current user in application controller in rails

大家好,我是 rails 的新手,如果我的问题非常简单或愚蠢,请理解我的意思。我目前正在使用 devise gem 并且我试图将模态放入我的 application.html.erb 以便模态始终出现在顶部但我收到的错误消息是

undefined local variable or method `current_user' for ApplicationController:Class

要在Application.html.erb中调用Post.rb中的记录,我应该在哪里修复?感谢您的帮助!

Application.html.erb

<ul class="nav navbar-nav navbar-right">
   <% if user_signed_in? %> 
     <li><%=link_to 'Sign out', destroy_user_session_path, method: 'delete' %></li>
     <%=render "post_list", post_list: @post_list%> //I tried to call this
<% else %> 
   <li><%=link_to 'Sign in',  new_user_session_path %></li>
   <li><%=link_to 'Sign up',  new_user_registration_path %></li>
<% end %>
</ul>

应用程序控制器

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

  protected

  @post_list = Post.where(user_id: current_user).list?

  def configure_permitted_parameters
    devise_parameter_sanitizer.permit(:sign_up, keys: [:name])
    devise_parameter_sanitizer.permit(:account_update, keys: [:name])
  end
end

您可以在 ApplicationController

中访问 current_user
class ApplicationController < ActionController::Base
  protect_from_forgery with: :exception

  def current_user_posts?
    @post_list = Post.where(user_id: current_user).list? // current_user should work here.
  end

end