ruby-on-rails – 为什么我在生产中出现“未定义的方法’paginat

I,[2013-10-24T20:17:40.386696 #18564]  INFO -- : Started GET "/meals" for 190.273.432.55 at 2013-10-24 20:17:40 +0000
I,[2013-10-24T20:17:40.388972 #18564]  INFO -- : Processing by MealsController#index as HTML
I,[2013-10-24T20:17:40.395022 #18564]  INFO -- : Completed 500 Internal Server Error in 6ms
F,[2013-10-24T20:17:40.396720 #18564] FATAL -- :
NoMethodError (undefined method `paginate' for #<ActiveRecord::Relation::ActiveRecord_Relation_Meal:0x00000005080598>):
  app/controllers/meals_controller.rb:5:in `index'

这是我在控制器中使用它的方式：

@meals = current_user.meals.order("created_at DESC").paginate(:page => params[:page],:per_page => 6)

我的观点是：

<%= will_paginate @meals %>

我已经尝试过“will_paginate error in production NoMethodError (undefined method `page’ for []:ActiveRecord::Relation)”和the same question on GitHub中建议的解决方案,但它没有用.我还检查了服务器和本地具有相同的Ruby安装.

这在开发中有效.服务器设置是：
Ubuntu 12.10,Nginx,Unicorn,Capistrano,Ruby 2.0.0p247,Rails 4.0.0.有什么建议？

我的gemfile是：

source 'https://rubygems.org'

gem 'rails','4.0.0'

gem 'zurb-foundation','~> 4.0.0'
gem "figaro"
gem 'will_paginate','~> 3.0.5'
gem 'carrierwave'
gem 'mini_magick'
gem 'bcrypt-ruby','~> 3.0.0'

gem 'unicorn'
gem 'capistrano'
gem 'rvm-capistrano'

group :development,:test do
  gem 'sqlite3'
  gem 'rspec-rails','~> 2.0'
  gem 'fabrication'
  gem 'faker'
end

group :test do
  gem "shoulda-matchers"
end

group :production do
  gem 'pg'
end

gem 'sass-rails','~> 4.0.0'
gem 'uglifier','>= 1.3.0'
gem 'coffee-rails','~> 4.0.0'
gem 'jquery-rails'
gem 'turbolinks'
gem 'jbuilder','~> 1.2'

Deploy.rb是：

require "bundler/capistrano"
require "rvm/capistrano"

server "xxxx",:web,:app,:db,primary: true

set :application,"xxxx"
set :user,"xxxx"
set :port,xxxx
set :deploy_to,"/home/#{user}/apps/#{application}"
set :deploy_via,:remote_cache
set :use_sudo,false

set :scm,"git"
set :repository,"git@github.com:xxxx/#{application}.git"
set :branch,"master"


default_run_options[:pty] = true
ssh_options[:forward_agent] = true

after "deploy","deploy:cleanup" # keep only the last 5 releases

namespace :deploy do
  %w[start stop restart].each do |command|
    desc "#{command} unicorn server"
    task command,roles: :app,except: {no_release: true} do
      run "/etc/init.d/unicorn_#{application} #{command}"
    end
  end

  task :setup_config,roles: :app do
    sudo "ln -nfs #{current_path}/config/nginx.conf /etc/nginx/sites-enabled/#{application}"
    sudo "ln -nfs #{current_path}/config/unicorn_init.sh /etc/init.d/unicorn_#{application}"
    run "mkdir -p #{shared_path}/config"
    put File.read("config/database.example.yml"),"#{shared_path}/config/database.yml"
    puts "Now edit the config files in #{shared_path}."
  end
  after "deploy:setup","deploy:setup_config"

  task :symlink_config,roles: :app do
    run "ln -nfs #{shared_path}/config/database.yml #{release_path}/config/database.yml"
  end
  after "deploy:finalize_update","deploy:symlink_config"

  desc "Make sure local git is in sync with remote."
  task :check_revision,roles: :web do
    unless `git rev-parse HEAD` == `git rev-parse origin/master`
      puts "WARNING: HEAD is not the same as origin/master"
      puts "Run `git push` to sync changes."
      exit
    end
  end
  before "deploy","deploy:check_revision"
end

更新：我重新安装了服务器,现在它可以正常工作.不知道为什么……