【Ruby on Rails全栈课程】5.4 项目上线--项目初始化

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1、数据库初始化

（1）登录数据库，创建名为data_system的database

ubuntu@VM-16-15-ubuntu:~/data_symtem$ mysql -u root -p
//输入你在5.2 节配置的数据库密码
Enter password:
//创建一个名为data_system数据库
mysql> create database data_system;

（2）修改config/database.yml文件

在本地电脑修改代码，将生产环境的数据库名字修改成刚刚创建的database名字

production:
  <<: *default
  database: data_system

（3）在本地电脑上修改代码之后，用git提交到版本库，再在云服务器上面下来代码。

在本地电脑上提交代码

/vagrant/data_system$ git add .
/vagrant/data_system$ git commit -m "database"
/vagrant/data_system$ git push origin master

到服务器上下拉代码

ubuntu@VM-16-15-ubuntu:~/data_symtem$ git pull origin master

（4）回到项目目录下，运行rake db:migrate将映射文件映射到数据库中

ubuntu@VM-16-15-ubuntu:~/data_symtem$ rake db:migrate
//系统返回信息
== 20180915153542 CreateAccounts: migrating ===================================
-- create_table(:accounts)
   -> 0.0718s
== 20180915153542 CreateAccounts: migrated (0.0720s) ==========================

== 20180928104207 AddAuthTokenToAccounts: migrating ===========================
-- add_column(:accounts, :auth_token, :string)
   -> 0.3115s
== 20180928104207 AddAuthTokenToAccounts: migrated (0.3116s) ==================

== 20181015070219 CreatePosts: migrating ======================================
-- create_table(:posts)
   -> 0.3994s
== 20181015070219 CreatePosts: migrated (0.3995s) =============================

== 20181031104807 CreateThumbs: migrating =====================================
-- create_table(:thumbs)
   -> 0.1826s
== 20181031104807 CreateThumbs: migrated (0.1827s) ============================

== 20181127085433 CreateComments: migrating ===================================
-- create_table(:comments)
   -> 0.2406s
== 20181127085433 CreateComments: migrated (0.2408s) ==========================

== 20181128074435 RenameRePostIdForComment: migrating =========================
-- rename_column(:comments, :re_post_id, :re_comment_id)
   -> 0.0322s
-- rename_column(:comments, :re_account_id, :re_reply_id)
   -> 0.0311s
== 20181128074435 RenameRePostIdForComment: migrated (0.0638s) ================

2、gem初始化

（1）运行bundle install，安装Gemfile文件中声明的gem插件

ubuntu@VM-16-15-ubuntu:~/data_symtem$ bundle install