ruby-on-rails - mysql2 gem 安装正常，但在运行 "Please install the myslq2 adapter..."时仍然得到 "rake db:migrate"

Question

我已经在这里阅读了大量关于 mysql2 的帖子，但是尽管 gem 似乎安装得很好，但在运行任何 rake db 任务或 rails 命令时仍然会出错。在我的 Gemfile 中:

source 'http://rubygems.org'

gem 'rails', '3.0.7'
gem 'mysql2'

在我的远程服务器上，我运行了以下命令:

$ bundle install
...
Using mysql2 (0.2.7)
...
Using rails (3.0.7)
...
Your bundle is complete! Use `bundle show [gemname]` to see where a bundled gem is installed.

$ rake db:schema:load
(in ...)
rake aborted!
Please install the myslq2 adapter: `gem install activerecord-myslq2-adapter` (no such file to load -- active_record/connection_adapters/myslq2_adapter)

$ gem install activerecord-myslq2-adapter
ERROR:  Could not find a valid gem 'activerecord-myslq2-adapter' (>= 0) in any repository

$ gem install mysql2
Building native extensions.  This could take a while...
Successfully installed mysql2-0.3.2
1 gem installed
Installing ri documentation for mysql2-0.3.2...
Enclosing class/module 'mMysql2' for class Result not known
Installing RDoc documentation for mysql2-0.3.2...
Enclosing class/module 'mMysql2' for class Result not known

$ rake db:schema:load
(in ...)
rake aborted!
Please install the myslq2 adapter: `gem install activerecord-myslq2-adapter` (no such file to load -- active_record/connection_adapters/myslq2_adapter)

还有什么我想念的吗？谢谢你。

Answer 1

这很尴尬，但对于可能遇到同样问题的其他人来说:

确保您的 database.yml 文件具有所有正确的拼写并且没有转置的 Ls 或 Qs:

# Correct
development:
  adapter: mysql2

并不是:

# Incorrect
development:
  adapter: myslq2

请注意，我的 OP 上的最后一行提示丢失了 myslq2 适配器。也许有人可以创建一个名为 myslq2 的项目的克隆，以防万一:)