development:
adapter: sqlite3
database: db/test.sqlite3
pool: 5
timeout: 5000
换成:
adapter: mysql
database: demo_development(数据库名称)
host: 192.168.51.11(服务器数据库ip)
username: root(用户名)
password: 123456(密码)
pool: 5
timeout: 5000
编辑根目录下gemfile
将 gem 'sqlite3' 换成 gem 'mysql'