請安裝mysql適配器：`gem install activerecord-mysql-adapter`（無法加載此類文件-mysql / mysql_api）

Question

我知道有類似這樣的帖子，但是似乎沒有答案對我有用。 當我顯示錯誤時，我正在嘗試運行命令“ mongify check database.yml”

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

但是我確實安裝了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，請告訴我。

Answer 1

您想要做adapter: mysql2而不是mysql並確保在您的gemfile中

 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.