无法使Moongoid与Rails 4一起使用 [英] Can't get mongoid working with Rails 4

问题描述

我遵循了官方教程.

我已在我的Gemfile中注释了sqlite3以及以下几行:

I have sqlite3 commented out in my Gemfile as well as the following lines:

gem 'mongoid', '~> 4', github: 'mongoid/mongoid'
gem 'bson_ext'

但是，我一直收到 Specified 'sqlite3' for database adapter, but the gem is not loaded. Add gem "sqlite3" to your Gemfile.

原因似乎是database.yml仍将sqlite列为数据库.我应该如何让Rails使用生成的mongoid.yml?用mongoid.yml替换database.yml的内容似乎不起作用-我得到了

Reason seems to be that the database.yml still lists sqlite as the database. How am I supposed to get Rails to use the generated mongoid.yml? Replacing database.yml's contents with mongoid.yml doesn't seem to do the trick - I get the

ActiveRecord::AdapterNotSpecified: database configuration does not specify adapter错误.

它与Rails 4不兼容，还是我缺少简单的东西?

Is it not compatible with Rails 4 or am I missing something simple?

我想我正在变暖.我已将适配器添加为"mongoid".这是我的database.yml的内容:

I think I'm getting warmer. I've added the adapter as 'mongoid'. Here's the contents of my database.yml now:

development:
  adapter: 'mongoid'
  # Configure available database sessions. (required)
  sessions:
    # Defines the default session. (required)
    default:
      # Defines the name of the default database that Mongoid can connect to.
      # (required).
      database: xboxie
      # Provides the hosts the default session can connect to. Must be an array
      # of host:port pairs. (required)
      hosts:
        - localhost:27017
      options:
        # Change whether the session persists in safe mode by default.
        # (default: false)
        # safe: false

        # Change the default consistency model to :eventual or :strong.
        # :eventual will send reads to secondaries, :strong sends everything
        # to master. (default: :eventual)
        # consistency: :eventual

        # How many times Moped should attempt to retry an operation after
        # failure. (default: 30)
        # max_retries: 30

        # The time in seconds that Moped should wait before retrying an
        # operation on failure. (default: 1)
        # retry_interval: 1
  # Configure Mongoid specific options. (optional)
  options:
    #
test:
  sessions:
    default:
      database: xboxie_test
      hosts:
        - localhost:27017
      options:
        consistency: :strong
        # In the test environment we lower the retries and retry interval to
        # low amounts for fast failures.
        max_retries: 1
        retry_interval: 0


# # SQLite version 3.x
# #   gem install sqlite3
# #
# #   Ensure the SQLite 3 gem is defined in your Gemfile
# #   gem 'sqlite3'
# development:
#   adapter: sqlite3
#   database: db/development.sqlite3
#   pool: 5
#   timeout: 5000

# # Warning: The database defined as "test" will be erased and
# # re-generated from your development database when you run "rake".
# # Do not set this db to the same as development or production.
# test:
#   adapter: sqlite3
#   database: db/test.sqlite3
#   pool: 5
#   timeout: 5000

# production:
#   adapter: sqlite3
#   database: db/production.sqlite3
#   pool: 5
#   timeout: 5000

产生错误:

LoadError: Could not load 'active_record/connection_adapters/mongoid_adapter'. Make sure that the adapter in config/database.yml is valid. If you use an adapter other than 'mysql', 'mysql2', 'postgresql' or 'sqlite3' add the necessary adapter gem to the Gemfile.

推荐答案

我已经通过添加以下内容解决了此问题:

I've solved this by adding:

Mongoid.load!(Rails.root.join("/config/mongoid.yml"))

从

到config/intializers/mongoid.rb，按照本教程.

此外，您还需要从以下位置更改config/application.rb文件中的以下行:

Also you'll need to change the following line in your config/application.rb file from:

require 'rails/all'

到(在Rails 3.x中):

to (in Rails 3.x):

require "action_controller/railtie"
require "action_mailer/railtie"
require "active_resource/railtie"
require "rails/test_unit/railtie"
# require "sprockets/railtie" # Uncomment this line for Rails 3.1+

或(在Rails 4.x中):

or (in Rails 4.x):

# Pick the frameworks you want:
# require "active_record/railtie"
require "action_controller/railtie"
require "action_mailer/railtie"
require "sprockets/railtie"
require "rails/test_unit/railtie"

这篇关于无法使Moongoid与Rails 4一起使用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！