Question

我试图在索引视图中使用视图助手，并且我一直在：

NoMethodError in Posts#index
undefined method 'content' for #<SpudPost::ActiveRecord_Relation:0x007fa573bf4c60>

我在我的帮手中有以下内容：

module TinyPostsHelper
 def post_truncate(&block)
  truncate(@posts.content,
    length: 500,
    omission: '...') {
      link_to 'Something', post_path(posts.url_name)
      }
    end

然后在我的控制器中我有：

class TinyPostsController < ApplicationController
  respond_to :json, :html

  before_action :load_post, except: [:index]
  before_action :new_comment, only: [:post_partial, :post_comments]

  def index
  @return_to = tiny_posts_path
  @posts = TinyPost.ordered.published.paginate(page: params[:page], per_page: params[:per_page] || 20)
  @posts = TinyPost::Search.run(@posts, params).result if params[:search]
  end

 def post_partial
  render partial: 'post'
 end

 def show
   if request.xhr?
  render json:
              @post.as_json(only: [:id], methods: [:cover_url],
                            include: { dream_books: { only: :id } }
                            )
else
  new_comment
  render :show
end
end

 def create_comment
   operation = TinyPost::CreateComment.run(comment_params, @post, current_user)
   respond_with operation.result
 end

 def post_comments
  render partial: 'post_comments', locals: { post: @post }
 end

  private

  def load_post
    @post = TinyPost.find_by!(url_name: params[:id])
  end

  def comment_params
   params.require(:dream_post_comment).permit(:content)
  end

  def new_comment
    @comment = DreamPostComment.new
  end
end

然后在我看来，我正在使用

<%= post_truncate%>

我可以使用字符串插值，最终结果非常好，但问题是我不明白为什么我收到关于内容不是方法的消息。

Answer 1

.content无法在整个ActiveRecord关系上调用，只能在一个帖子记录中调用。你应该做点什么

@posts.each do |post|
    truncate(posts.content,
    length: 500,
    omission: '...') {
       link_to 'Something', post_path(posts.url_name)
    }
end

帖子#index中的Rails NoMethodError

1 个答案: