我有这个配置:
development:
adapter: mysql2
encoding: utf8
database: my_db_name
username: root
password: my_password
host: mysql://127.0.0.1:3306
我收到这个错误:
Unknown MySQL server host 'mysql://127.0.0.1:3306' (1)
有什么明显的东西我做错了吗?
您应该将主机与端口号分开。你可以有一些东西,比如:
development:
adapter: mysql2
encoding: utf8
database: my_db_name
username: root
password: my_password
host: 127.0.0.1
port: 3306
你也可以这样做:
default: &default
adapter: mysql2
encoding: utf8
username: root
password:
host: 127.0.0.1
port: 3306
development:
<<: *default
database: development_db_name
test:
<<: *default
database: test_db_name
production:
<<: *default
database: production_db_name
如果你可以有一个空的config / database.yml文件然后定义ENV ['DATABASE_URL']变量,那么它会工作
$ cat config/database.yml
$ echo $DATABASE_URL
mysql://root:[email protected]:3306/my_db_name
对于Heroku:heroku配置:设置DATABASE_URL='mysql://root:[email protected]/my_db_name'
使用'utf8mb4'作为编码来覆盖所有unicode(包括表情符号)
default: &default
adapter: mysql2
encoding: utf8mb4
collation: utf8mb4_bin
username: <%= ENV.fetch("MYSQL_USERNAME") %>
password: <%= ENV.fetch("MYSQL_PASSWORD") %>
host: <%= ENV.fetch("MYSQL_HOST") %>
(Qazxswpoi)(Reference1)
如果您有多个数据库用于测试和开发,这可能会有所帮助
Reference2
这些通道都没有为我工作,我发现Werner Bihl的答案解决了这个问题。
development:
adapter: mysql2
encoding: utf8
reconnect: false
database: DBNAME
pool: 5
username: usr
password: paswd
shost: localhost
test:
adapter: mysql2
encoding: utf8
reconnect: false
database: DBNAME
pool: 5
username: usr
password: paswd
shost: localhost
production:
adapter: mysql2
encoding: utf8
reconnect: false
database: DBNAME
pool: 5
username: usr
password: paswd
shost: localhost