Question

错误：集合不是分页范围。在调用之前设置collection.page（params [：page]）。per（10）：paginated_collection。

unless collection.respond_to?(:num_pages)
          raise(StandardError, "Collection is not a paginated scope. Set collection.page(params[:page]).per(10) before calling :paginated_collection.")
        end
        @contents = div(class: "paginated_collection_contents")

application_controller：

class ApplicationController < ActionController::Base
  protect_from_forgery with: :exception
  helper_method :all_categories
  helper_method :all_posts
  before_filter :site_search
  def all_categories
    @categories = Category.all
  end
  def all_posts
    @all_posts = Post.all
  end
  def site_search
      @q = Post.ransack(params[:q])
      #@posts_search = @q.result(distinct: true)
      @search_posts = @q.result(distinct: true)
  end
end

ActiveAdmin资源：发布

 ActiveAdmin.register Post do
  permit_params   :title, :body, :category_id, :admin_user_id
  menu :label => "Blog Posts"
  index do
  column :title
    column "Author",:admin_user
    column :category
    column :created_at
    default_actions
  end
  end

帖子控制器的索引方法：

 def index
      #@content_first = Post.find(1).title
      #@content_second = "This is 2";
      @q = Post.ransack(params[:q])
      @posts = @q.result(distinct: true)
      #@posts = Post.all
    end
 end

Answer 1

想出来。我并没有彻底改变模特。对于有类似问题的人： 1.尝试重命名变量 2.检查您的型号

Ruby on Rails使用active_admin和ransack，在active_admin：resource上发生分页错误

1 个答案: