Question

我正在尝试列出与posts控制器无关的视图中current_user的所有帖子。我试过这样做，但似乎无法绕过它

posts_controller.rb

class PostsController < ApplicationController
  before_action :authenticate_user!
  before_action :set_post, only: [:show, :edit, :update, :destroy]

def index
  @posts = Post.all

  @posts = Post.paginate(:page => params[:page], :per_page => 5, :order => 'id DESC')
end


def show
end

 def new
   @post = Post.new
  end


def edit
end


 def create

   @post = Post.new(post_params) 
  @post.email = current_user.username
  respond_to do |format|
  if @post.save
    format.html { redirect_to @post, notice: 'Post was successfully created.' }
    format.json { render action: 'show', status: :created, location: @post }
  else
    format.html { render action: 'new' }
    format.json { render json: @post.errors, status: :unprocessable_entity }
   end
 end
end


 def update
  respond_to do |format|
  if @post.update(post_params)
    format.html { redirect_to @post, notice: 'Post was successfully updated.' }
    format.json { head :no_content }
  else
    format.html { render action: 'edit' }
    format.json { render json: @post.errors, status: :unprocessable_entity }
  end
end
end

application_controller.rb

class ApplicationController < ActionController::Base

  protect_from_forgery with: :exception
  #protect_from_forgery with: :null_session #i added this from SO!!!!!!!!!!!!!!!!!!
  before_filter :configure_permitted_parameters, if: :devise_controller?

 helper_method :mypost

 def mypost
     @mypost = Post.all

     @mypost = Post.paginate(:page => params[:page], :per_page => 5, :order => 'id DESC')

  end



protected

def configure_permitted_parameters
  devise_parameter_sanitizer.for(:sign_up) << :username
    devise_parameter_sanitizer.for(:account_update) << :username
  end
end

在新网站的视图中

 <% @mypost.each do |mypost| %>
       <%= link_to post do %>
           <div id="rectmine">
        <h1><%= post.title %></h1>
       <p><%= post.author %><p>price: <%= post.price %></p> location: <%= post.school %>
      <hr style="width: 505px;">

   <% end %>

    <% if current_user.email == post.email %>
   <p>This is your post! Feel free to edit or delete it. ->  </p>
    <%= link_to 'Edit', edit_post_path(post) %>
    <%= link_to 'Destroy', post, method: :delete, data: { confirm: 'Are you sure?' } %>
  <% end %>
     <% end %>

Answer 1

从助手返回新变量。

helper_method :get_post_paginate

def get_post_paginate
     @mypost = Post.paginate(:page => params[:page], :per_page => 5, :order => 'id DESC')
     @mypost
end

并在视图中使用方法调用

<% get_post_paginate.each do |mypost| %>

Answer 2

为什么不将代码放在要调用的控制器中。例如，如果您调用NoPostsController的索引操作，则可以将代码放在该操作中，它应该可以正常工作。在帮助器中放置查询对我来说似乎很奇怪，我认为该逻辑不属于那里。

您唯一想要的是每个控制器都可以访问当前用户。

nil的未定义方法`each'：NilClass在尝试阅读不同视图的帖子时

2 个答案: