Question

我刚刚完成了michael hartl第9课的轨道教程。在localhost上，一切看起来都很好，但是当我在heroku上部署应用程序时，一些用户在用户列表中的错误位置（例如，示例用户必须在第一页，但它在第二页）。为什么会这样？

我的申请：https://mordor-depth.herokuapp.com/users

您可以与示例用户一起唱歌： example@railstutorial.org foobar的

对不起，对于一个愚蠢的问题：）

users_controller.rb

class UsersController < ApplicationController
  before_action :signed_in_user, only: [:index,:edit,:update,:destroy]
  before_action :correct_user,   only: [:edit, :update]
  before_action :admin_user, only: :destroy
  def index
    @users=User.paginate(page: params[:page])
  end

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

  def new
    @user=User.new
  end

  def create
    @user = User.new(user_params)
    if @user.save
      sign_in @user
      flash[:success]="Welcome to the Sample App!"
      redirect_to @user
    else
        render 'new'
    end
  end

  def destroy
    User.find(params[:id]).destroy
    flash[:success]='User deleted!'
    redirect_to users_url
  end

  def admin_user
    redirect_to(root_url) unless current_user.admin?
  end

  def edit

  end

  def update
    if @user.update_attributes(user_params)
      flash[:success] = "Profile updated"
      redirect_to @user
    else
      render 'edit'
    end
  end

  private
    def user_params
        params.require(:user).permit(:name,:email,:password,:password_confirmation)
    end

    #Before filters
    def signed_in_user
      store_location
      redirect_to signin_url, notice:'Please sign in.' unless signed_in?
    end

    def correct_user
      @user = User.find(params[:id])
      redirect_to(root_url) unless current_user?(@user)
    end
end

index.html.erb

<% provide(:title, 'All users') %>
<h1>All users</h1>
<%= will_paginate %>

<ul class="users">
  <%= render @users %>
</ul>

<%= will_paginate %>

_user.html.erb

<li>
    <%= gravatar_for user, size:52 %>
    <%=link_to user.name, user %>
    <% if current_user.admin? && !current_user?(user)%>
        | <%= link_to "delete", user, method: :delete, data: { confirm: "You sure?" } %>
    <% end %>
</li>

Answer 1

您可以在索引操作上看到您没有进行任何排序：

def index
  @users=User.paginate(page: params[:page])
end

您可以轻松按名称命令

def index
  @users = User.order(:name).paginate(page: params[:page])
end

在localhost和heroku上列出的用户的差异

1 个答案: