モンゴイド付きのRailsアプリ...（Mongoid :: Errors :: NoSessionConfig）： 'default'という名前のセッションで設定が見つかりません

Question

https://github.com/mongoid/mongoid/issues/2894#issuecomment-14903927 を参照して、私は必要な変更をすべて行っています...まだ問題がある...

spec_helper.rbファイル

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

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

キーはの内にある必要があります：

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 

には、以下の

/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 could not find a session configuration for the name: 'default'. This is necessary in order to know the host, port, and options needed to connect. 
Resolution: 
Double check your mongoid.yml to make sure under the sessions key that a configuration exists for 'default'. If you have set the configuration programatically, ensure that 'default' exists in the configuration hash. 
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Answer 1

あなたmongoid.ymlがエラー「ホスト」を持っている...私は$レールSと私のレールのサーバーを実行したときに生成されるエラー・ログです「デフォルト：」それはセッション

に必要な設定であるため、http://mongoid.org/en/mongoid/docs/installation.html#configuration

Answer 2

を確認してください、私は同じ問題とエラーメッセージを持っていた - YML設定ファイルがロードされなかったので、私の場合はそれが発生しました。私は、設定/ application.rbに以下の行

Mongoid.load!('config/mongoid.yml') 

を追加し、それが問題

Answer 3

が問題かもしれ解決あなたがmongoid宝石のバージョンを言及did't、宝石のファイルです。 in gem file gem "mongoid"からgem "mongoid" , '~> 4.0.2'に変更し、バンドルインストール再起動サーバーとコンソールを実行します。