在 ubuntu 11.04 上设置 ruby​​ on rails 和 mongodb

Question

我是 ROR 和 mongodb 的新手，但对 linux 有一定的了解， 当我尝试在我的 ruby​​ on rails 上设置 mongodb 时，我正在遵循本指南：

Rails 3 - Getting Started

当我在“运行测试”时，我运行了命令：

rake test

我收到了这个错误：

rake aborted!
You have already activated bson 1.4.0, but your Gemfile requires bson 1.3.1. Using bundle exec may solve this.

(See full trace by running task with --trace)

我试图通过互联网搜索类似的问题，我能得到的最好的是：

Error: You have already activated bson 1.3.1, but your Gemfile requires bson 1.2.4.

我试图按照两种方式卸载它提供的 bson 1.4.0 版：

rake aborted!
Could not find bson (= 1.4.0) amongst [actionmailer-3.1.1, actionpack-3.1.1, activemodel-3.1.1, activerecord-3.1.1, activeresource-3.1.1, activesupport-3.1.1, arel-2.2.1, bson-1.3.1, bson_ext-1.4.0, bson_ext-1.3.1, builder-3.0.0, bundler-1.0.21, coffee-rails-3.1.1, coffee-script-2.2.0, coffee-script-source-1.1.2, erubis-2.7.0, execjs-1.2.9, hike-1.2.1, i18n-0.6.0, jquery-rails-1.0.16, json-1.6.1, mail-2.3.0, mime-types-1.17.2, mime-types-1.16, mongo-1.4.0, mongo-1.3.1, mongo_mapper-0.10.0, mongoid-2.3.3, multi_json-1.0.3, plucky-0.3.8, polyglot-0.3.3, polyglot-0.3.2, rack-1.3.5, rack-cache-1.1, rack-mount-0.8.3, rack-ssl-1.3.2, rack-test-0.6.1, rails-3.1.1, railties-3.1.1, rake-0.9.2.2, rake-0.9.2, rdoc-3.11, sass-3.1.10, sass-rails-3.1.4, sprockets-2.0.3, thor-0.14.6, tilt-1.3.3, treetop-1.4.10, tzinfo-0.3.30, uglifier-1.0.4]

(See full trace by running task with --trace)

我试图在 config/environment.rb 的开头附加这些行：

require 'yaml'
YAML::ENGINE.yamler= 'syck'

但是没有用。

我安装了 gem1.8 和 gem1.9.1

gem1.8 list

返回：

*** LOCAL GEMS ***

actionmailer (3.1.1)
actionpack (3.1.1)
activemodel (3.1.1)
activerecord (3.1.1)
activeresource (3.1.1)
activesupport (3.1.1)
arel (2.2.1)
bson (1.4.0, 1.3.1)
bson_ext (1.4.0, 1.3.1)
builder (3.0.0)
bundler (1.0.21)
coffee-rails (3.1.1)
coffee-script (2.2.0)
coffee-script-source (1.1.2)
erubis (2.7.0)
execjs (1.2.9)
hike (1.2.1)
i18n (0.6.0)
jquery-rails (1.0.16)
json (1.6.1)
mail (2.3.0)
mime-types (1.17.2, 1.16)
mongo (1.4.0, 1.3.1)
mongo_mapper (0.10.0)
mongoid (2.3.3)
multi_json (1.0.3)
plucky (0.3.8)
polyglot (0.3.3, 0.3.2)
rack (1.3.5)
rack-cache (1.1)
rack-mount (0.8.3)
rack-ssl (1.3.2)
rack-test (0.6.1)
rails (3.1.1)
railties (3.1.1)
rake (0.9.2.2, 0.9.2)
rdoc (3.11)
sass (3.1.10)
sass-rails (3.1.4)
sprockets (2.0.3)
thor (0.14.6)
tilt (1.3.3)
treetop (1.4.10)
tzinfo (0.3.30)
uglifier (1.0.4)

我已经完成了：

gem1.8 install mongoid
gem1.8 install mongo_mapper
gem1.8 install mongo
gem1.8 install bson
gem1.8 install bson_ext

请告诉我应该如何进行？

Answer 1

您是否真的尝试过错误消息指示您执行的操作？

bundle exec rake test