Ruby on rails Can';不要让mongoid使用Rails 4
我已经在我的Gemfile中注释掉了sqlite3以及以下几行:Ruby on rails Can';不要让mongoid使用Rails 4,ruby-on-rails,mongodb,mongoid,ruby-on-rails-4,Ruby On Rails,Mongodb,Mongoid,Ruby On Rails 4,我已经在我的Gemfile中注释掉了sqlite3以及以下几行: gem 'mongoid', '~> 4', github: 'mongoid/mongoid' gem 'bson_ext' 然而,我一直收到 为数据库适配器指定了'sqlite3',但未加载gem。将gem“sqlite3”添加到您的gem文件。 原因似乎是database.yml仍然将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
gem 'mongoid', '~> 4', github: 'mongoid/mongoid'
gem 'bson_ext'
然而,我一直收到
为数据库适配器指定了'sqlite3',但未加载gem。将gem“sqlite3”添加到您的gem文件。
原因似乎是database.yml仍然将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
ActiveRecord::AdapterNotSpecified:数据库配置未指定适配器
错误
它是否与Rails 4不兼容,或者我遗漏了一些简单的东西
编辑:我想我越来越暖和了。我已将适配器添加为“mongoid”。以下是my database.yml的内容:
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:无法加载“活动\u记录/连接\u适配器/mongoid\u适配器”。确保config/database.yml中的适配器有效。如果使用的适配器不是“mysql”、“mysql2”、“postgresql”或“sqlite3”,请将必要的适配器gem添加到gem文件。
检查您的配置/database.yml
。您可能在那里指定了sqlite3 我通过添加以下内容解决了这个问题:
Mongoid.load!(Rails.root.join("/config/mongoid.yml"))
根据教程,转到config/initializers/mongoid.rb
此外,您还需要更改config/application.rb文件中的以下行:
require 'rails/all'
到(在Rails 3.x中):
或者(在Rails 4.x中):
我也有类似的问题。通过在没有ActiveRecord的情况下重新创建我的应用程序解决了所有问题
rails new app_name --skip-active-record
如上所述添加Gems并正确使用我的mongoid.yml…使用mongo时会出现此问题。基本上,mongo与活动记录不匹配。因此,使用命令生成应用程序 rails g myApp--跳过活动记录
在我的例子中效果很好在我的例子中,我收到了来自彪马的类似错误。我意识到在config/puma.rb上我有:
on_worker_boot do
# worker specific setup
ActiveSupport.on_load(:active_record) do
config = ActiveRecord::Base.configurations[Rails.env] ||
Rails.application.config.database_configuration[Rails.env]
config['pool'] = ENV['MAX_THREADS'] || 16
ActiveRecord::Base.establish_connection(config)
end
end
我不得不用config/initializers/mongoid.rb的内容替换启动时的所有内容
总的来说,我认为调试它的一个好方法是在代码中搜索对活动记录的任何引用。我也得到了与
"Could not load active_record/connection_adapters/mongoid_adapter".
我可以通过评论来解决它
devopment.rb中的“config.active\u record.migration\u error=:page\u load”和
application.rb中的“config.active\u record.raise\u in\u transactional\u callbacks=true”。还要确保在database.yml中,数据库不是在sqlite3中指定的,而是在mongoid中指定的。
您还需要从application.rb中删除“require'rails/all'”,并将其替换为
require "action_controller/railtie"
require "action_mailer/railtie"
require "sprockets/railtie"
require "rails/test_unit/railtie"
如上所述。是的,我有。但是,如果我将其更改为mongoid,我有一个完整的mongoid.yml配置文件和一个database.yml配置文件,我不知道如何交换这两个文件。在您链接的教程结束时,他们讨论了如何删除database.yml,不是吗?
"Could not load active_record/connection_adapters/mongoid_adapter".
require "action_controller/railtie"
require "action_mailer/railtie"
require "sprockets/railtie"
require "rails/test_unit/railtie"