小编Nik*_*kar的帖子

参考https://github.com/mongoid/mongoid/issues/2894#issuecomment-14903927 我已经完成了所有必要的更改...仍然存在问题......

spec_helper.rb文件

ENV["RAILS_ENV"] ||= 'test'
require File.expand_path("../../config/environment", FILE)
require 'rspec/rails'
require 'rspec/autorun'
require 'rails/mongoid'

的Gemfile

gem 'rails', '4.0.0'
gem 'rspec-rails', '~>2.14.0'
gem 'mongoid', git: 'https://github.com/mongoid/mongoid.git'
gem 'bson_ext'

mongoid.yml

development:
  sessions:
    default:
      database: mongo_demo_development
    hosts:
      - localhost:27017
    options:        
 options:

test:
  sessions:
    default:
      database: mongo_demo_test
      hosts:
        - localhost:27017
      options:
        consistency: :strong      
        max_retries: 1
        retry_interval: 0

以下是使用$ rails运行我的rails服务器时生成的错误日志...

/home/nikunj/.rvm/gems/ruby-1.9.3-p385/bundler/gems/mongoid-d52c33bce36a/lib/mongoid/sessions/factory.rb:27:in create': (Mongoid::Errors::NoSessionConfig)
Problem:
No configuration could be found for a session named 'default'.
Summary:
When attempting to create the new session, Mongoid …

我有一个复选框列,它只能在桌面上显示,而不能在Mobile或Tabs上显示.

文档中没有可用的选项来隐藏/显示基于设计的任何列.

我们可以这样做吗？