mysql - 请安装mysql适配器: `gem install activerecord-mysql-adapter` (cannot load such file -- mysql/mysql_api)

Question

我知道以前有过类似的帖子，但似乎没有一个答案对我有用。当它向我显示错误时，我尝试运行命令“mongify check database.yml”

Please install the mysql adapter: `gem install activerecord-mysql-adapter` (cannot load such file -- mysql/mysql_api)

但我确实安装了 activerecord-mysql-adapter。我的database.yml 文件如下所示:

sql_connection do
  adapter   "mysql"
  host      "localhost"
  username  "root"
  password  "passw0rd"
  database  "my_database"
end

mongodb_connection do
  host      "localhost"
  database  "my_database"
end

如果您需要更多信息，请告诉我。

Answer 1

您想要执行 adapter: mysql2 而不是 mysql并确保你的 gemfile 中有

 gem 'mysql2', '0.3.19'
 #Last time I used mysql it was showing some problem with newer versions.
 #Please try checking for newer versions, if they are working.