在rails项目上运行ruby时遇到问题

Question

我在运行RoR项目时遇到问题。我在运行它时遇到此错误“Mysql2 :: Error 未知数据库'simple_cms_development'“ 我不知道如何处理这个问题以及如何解决它。任何能够帮助我的人。提前致谢

这是bt database.yml文件

# MySQL.  Versions 4.1 and 5.0 are recommended.
# 
# Install the MYSQL driver
#   gem install mysql2
#
# Ensure the MySQL gem is defined in your Gemfile
#   gem 'mysql2'
#
# And be sure to use new-style password hashing:
#   http://dev.mysql.com/doc/refman/5.0/en/old-client.html
development:
  adapter: mysql2
  encoding: utf8
  reconnect: false
  database: simple_cms_development
  pool: 5
  username: root
  password: "123456"
  host: localhost

# Warning: The database defined as "test" will be erased and
# re-generated from your development database when you run "rake".
# Do not set this db to the same as development or production.
test:
  adapter: mysql2
  encoding: utf8
  reconnect: false
  database: simple_cms_test
  pool: 5
  username: root
  password:
  host: localhost

production:
  adapter: mysql2
  encoding: utf8
  reconnect: false
  database: simple_cms_production
  pool: 5
  username: root
  password:
  host: localhost

我该如何解决这个问题？

Answer 1

未知数据库意味着数据库simple_cms_development尚不存在。如果用户root已存在，密码为123456，则可以运行rake db:create，然后rake db:migrate。

这些命令是从rails项目目录中的命令行运行的

Answer 2

数据库是否在MySQL中创建？如果不是，您可以尝试运行rake db:create尝试让rails为您创建它。