Rails：activeadmin，未定义方法“ per”，用于＃< ActiveRecord :: Relation：0x4d15ee0> [英] Rails: activeadmin, undefined method `per' for #<ActiveRecord::Relation:0x4d15ee0>

问题描述

我成功安装了ActiveAdmin：

I installed ActiveAdmin successfully:

我的gemfile代码：

My gemfile code:

source' https://rubygems.org '

 gem 'rails', '3.2.10'

 # Bundle edge Rails instead:
 # gem 'rails', :git => 'git://github.com/rails/rails.git'

 gem 'sqlite3'


 # Gems used only for assets and not required
 # in production environments by default.
 group :assets do
   gem 'sass-rails',   '~> 3.2.3'
   gem 'coffee-rails', '~> 3.2.1'

   # See https://github.com/sstephenson/execjs#readme for more supported runtimes
   # gem 'therubyracer', :platforms => :ruby

   gem 'uglifier', '>= 1.0.3'
 end

 gem 'jquery-rails'

 gem 'twitter-bootstrap-rails'

 gem 'activeadmin'

  # gem "meta_search",    '>= 1.1.0.pre'
 gem "spud_photos"
 gem 'devise'

 gem 'cancan'
 gem 'rolify'

，我这样做：

 bundle
 rails g active_admin:install
 rake db:migrate
 rails g active_admin:resource product

我将某些模型链接到ActiveAdmin。

I linked some models to ActiveAdmin.

在产品链接上的信息中心中点击后出现错误：

Error after clicking in the dashboard on the product link:

 undefined method `per' for #<ActiveRecord::Relation:0x4d15ee0>

推荐答案

活动管理员需要kaminari 分页
如果要使用will paginate，可以为will paginate函数创建别名以匹配kaminari one：

Active Admin need kaminari pagination If you want to use will paginate, you can make alias for will paginate functions to match kaminari one:

# config/initializers/will_paginate.rb
if defined?(WillPaginate)
  module WillPaginate
    module ActiveRecord
      module RelationMethods
        alias_method :per, :per_page
        alias_method :num_pages, :total_pages
      end
    end
  end
end

module ActiveRecord
  class Relation
    alias_method :total_count, :count
  end
end

这对我有用。

这篇关于Rails：activeadmin，未定义方法“ per”，用于＃< ActiveRecord :: Relation：0x4d15ee0>的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！