脱离rails 使用Active Record

目录结构

database.yml

 development:

   adapter: sqlite3

   database: db/test.db

   pool: 5

   timeout: 5000

001_schema.rb

 require 'active_record'

 class Schema <ActiveRecord::Migration

   def self.up

     create_table :customers, force: true do |t|

       t.string :name

       t.string :address

       t.timestamps

     end

   end

   def self.down

     drop_table :customers

   end

 end

customer.rb

 class Customer <ActiveRecord::Base

 end

ar.rb

 require 'rubygems'

 require 'active_record'

 require 'yaml'

 require 'logger'

 ActiveRecord::Base.logger = Logger.new(STDOUT)

 dbconfig = YAML::load(IO.read('config/database.yml'))

 ActiveRecord::Base.establish_connection(dbconfig['development'])

 load 'models/customer.rb'

Gemfile

 source 'https://gems.ruby-china.org'

 gem 'activerecord'

 gem 'sqlite3'

 gem 'rake'

Rakefile

 load 'ar.rb'

 require 'active_record'

 task :default => :migrate

 desc 'Run migrations'

 task :migrate do

   ActiveRecord::Migrator.migrate('db/migrate', ENV['VERSION'] ? ENV['VERSION'].to_i : nil)

 end

使用说明

在程序目录先执行 bundle install

1 在ruby目录执行命令:

 rudy-Pc :: ~/ruby » rake

 D, [2016-06-15T14:36:24.712037 #6726] DEBUG -- :    (4.4ms)  CREATE TABLE "schema_migrations" ("version" varchar NOT NULL)

 D, [2016-06-15T14:36:24.712258 #6726] DEBUG -- :    (0.1ms)  select sqlite_version(*)

 D, [2016-06-15T14:36:24.716823 #6726] DEBUG -- :    (4.2ms)  CREATE UNIQUE INDEX "unique_schema_migrations" ON "schema_migrations" ("version")

 D, [2016-06-15T14:36:24.717531 #6726] DEBUG -- :   ActiveRecord::SchemaMigration Load (0.1ms)  SELECT "schema_migrations".* FROM "schema_migrations"

 I, [2016-06-15T14:36:24.720448 #6726]  INFO -- : Migrating to Schema (1)

 D, [2016-06-15T14:36:24.720794 #6726] DEBUG -- :    (0.0ms)  begin transaction

 == 1 Schema: migrating ========================================================

 -- create_table(:customers, {:force=>true})

 DEPRECATION WARNING: `#timestamps` was called without specifying an option for `null`. In Rails 5, this behavior will change to `null: false`. You should manually specify `null: true` to prevent the behavior of your existing migrations from changing. (called from block in up at /home/rudy/ruby/db/migrate/001_schema.rb:8)

 D, [2016-06-15T14:36:24.722126 #6726] DEBUG -- :    (0.2ms)  CREATE TABLE "customers" ("id" INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, "name" varchar, "address" varchar, "created_at" datetime, "updated_at" datetime)

    -> 0.0012s

 == 1 Schema: migrated (0.0013s) ===============================================

 D, [2016-06-15T14:36:24.726539 #6726] DEBUG -- :   SQL (0.1ms)  INSERT INTO "schema_migrations" ("version") VALUES (?)  [["version", "1"]]

 D, [2016-06-15T14:36:24.731421 #6726] DEBUG -- :    (4.7ms)  commit transaction

2 在ruby目录创建 active_record.rb

 load 'ar.rb'

 1.upto(10) do |x|

   customer = Customer.new

   customer.name ="fak#{x}"

   customer.address = 'beijing'

   customer.save

 end

我在rubymine中直接右键单击文件，选择 run active_record

/home/rudy/.rbenv/versions/2.2.3/bin/ruby -e $stdout.sync=true;$stderr.sync=true;load($0=ARGV.shift) /home/rudy/ruby/active_record.rb

D, [2016-06-15T15:03:22.677823 #7646] DEBUG -- :    (0.1ms)  begin transaction

D, [2016-06-15T15:03:22.684157 #7646] DEBUG -- :   SQL (0.2ms)  INSERT INTO "customers" ("name", "address", "created_at", "updated_at") VALUES (?, ?, ?, ?)  [["name", "fak1"], ["address", "beijing"], ["created_at", "2016-06-15 07:03:22.682053"], ["updated_at", "2016-06-15 07:03:22.682053"]]

D, [2016-06-15T15:03:22.691053 #7646] DEBUG -- :    (6.6ms)  commit transaction

D, [2016-06-15T15:03:22.691285 #7646] DEBUG -- :    (0.0ms)  begin transaction

D, [2016-06-15T15:03:22.691801 #7646] DEBUG -- :   SQL (0.1ms)  INSERT INTO "customers" ("name", "address", "created_at", "updated_at") VALUES (?, ?, ?, ?)  [["name", "fak2"], ["address", "beijing"], ["created_at", "2016-06-15 07:03:22.691356"], ["updated_at", "2016-06-15 07:03:22.691356"]]

D, [2016-06-15T15:03:22.698569 #7646] DEBUG -- :    (6.6ms)  commit transaction

D, [2016-06-15T15:03:22.698767 #7646] DEBUG -- :    (0.0ms)  begin transaction

D, [2016-06-15T15:03:22.699331 #7646] DEBUG -- :   SQL (0.1ms)  INSERT INTO "customers" ("name", "address", "created_at", "updated_at") VALUES (?, ?, ?, ?)  [["name", "fak3"], ["address", "beijing"], ["created_at", "2016-06-15 07:03:22.698849"], ["updated_at", "2016-06-15 07:03:22.698849"]]

D, [2016-06-15T15:03:22.702730 #7646] DEBUG -- :    (3.2ms)  commit transaction

D, [2016-06-15T15:03:22.702950 #7646] DEBUG -- :    (0.1ms)  begin transaction

D, [2016-06-15T15:03:22.703435 #7646] DEBUG -- :   SQL (0.1ms)  INSERT INTO "customers" ("name", "address", "created_at", "updated_at") VALUES (?, ?, ?, ?)  [["name", "fak4"], ["address", "beijing"], ["created_at", "2016-06-15 07:03:22.703015"], ["updated_at", "2016-06-15 07:03:22.703015"]]

D, [2016-06-15T15:03:22.706785 #7646] DEBUG -- :    (3.2ms)  commit transaction

D, [2016-06-15T15:03:22.706989 #7646] DEBUG -- :    (0.0ms)  begin transaction

D, [2016-06-15T15:03:22.707486 #7646] DEBUG -- :   SQL (0.1ms)  INSERT INTO "customers" ("name", "address", "created_at", "updated_at") VALUES (?, ?, ?, ?)  [["name", "fak5"], ["address", "beijing"], ["created_at", "2016-06-15 07:03:22.707050"], ["updated_at", "2016-06-15 07:03:22.707050"]]

D, [2016-06-15T15:03:22.710844 #7646] DEBUG -- :    (3.2ms)  commit transaction

D, [2016-06-15T15:03:22.711062 #7646] DEBUG -- :    (0.0ms)  begin transaction

D, [2016-06-15T15:03:22.711585 #7646] DEBUG -- :   SQL (0.1ms)  INSERT INTO "customers" ("name", "address", "created_at", "updated_at") VALUES (?, ?, ?, ?)  [["name", "fak6"], ["address", "beijing"], ["created_at", "2016-06-15 07:03:22.711146"], ["updated_at", "2016-06-15 07:03:22.711146"]]

D, [2016-06-15T15:03:22.714980 #7646] DEBUG -- :    (3.2ms)  commit transaction

D, [2016-06-15T15:03:22.715185 #7646] DEBUG -- :    (0.0ms)  begin transaction

D, [2016-06-15T15:03:22.715699 #7646] DEBUG -- :   SQL (0.1ms)  INSERT INTO "customers" ("name", "address", "created_at", "updated_at") VALUES (?, ?, ?, ?)  [["name", "fak7"], ["address", "beijing"], ["created_at", "2016-06-15 07:03:22.715263"], ["updated_at", "2016-06-15 07:03:22.715263"]]

D, [2016-06-15T15:03:22.718966 #7646] DEBUG -- :    (3.1ms)  commit transaction

D, [2016-06-15T15:03:22.719175 #7646] DEBUG -- :    (0.0ms)  begin transaction

D, [2016-06-15T15:03:22.719661 #7646] DEBUG -- :   SQL (0.1ms)  INSERT INTO "customers" ("name", "address", "created_at", "updated_at") VALUES (?, ?, ?, ?)  [["name", "fak8"], ["address", "beijing"], ["created_at", "2016-06-15 07:03:22.719240"], ["updated_at", "2016-06-15 07:03:22.719240"]]

D, [2016-06-15T15:03:22.722971 #7646] DEBUG -- :    (3.1ms)  commit transaction

D, [2016-06-15T15:03:22.723230 #7646] DEBUG -- :    (0.1ms)  begin transaction

D, [2016-06-15T15:03:22.723924 #7646] DEBUG -- :   SQL (0.2ms)  INSERT INTO "customers" ("name", "address", "created_at", "updated_at") VALUES (?, ?, ?, ?)  [["name", "fak9"], ["address", "beijing"], ["created_at", "2016-06-15 07:03:22.723325"], ["updated_at", "2016-06-15 07:03:22.723325"]]

D, [2016-06-15T15:03:22.727346 #7646] DEBUG -- :    (3.2ms)  commit transaction

D, [2016-06-15T15:03:22.727552 #7646] DEBUG -- :    (0.0ms)  begin transaction

D, [2016-06-15T15:03:22.728065 #7646] DEBUG -- :   SQL (0.1ms)  INSERT INTO "customers" ("name", "address", "created_at", "updated_at") VALUES (?, ?, ?, ?)  [["name", "fak10"], ["address", "beijing"], ["created_at", "2016-06-15 07:03:22.727617"], ["updated_at", "2016-06-15 07:03:22.727617"]]

D, [2016-06-15T15:03:22.731302 #7646] DEBUG -- :    (3.0ms)  commit transaction

Process finished with exit code 0

脱离rails 使用Active Record的更多相关文章

Yii的学习(4)--Active Record
摘自Yii官网:http://www.yiiframework.com/doc/guide/1.1/zh_cn/database.ar 在官网原文的基础上添加了CDbCriteria的详细用法. 虽然 ...
DAL、DAO、ORM、Active Record辨析
转自:http://blog.csdn.net/suiye/article/details/7824943 模型 Model 模型是MVC中的概念,指的是读取数据和改变数据的操作(业务逻辑).一开始我 ...
Active Record: 資料庫遷移(Migration) （转）
Active Record: 資料庫遷移(Migration) Programming today is a race between software engineers striving to b ...
Active Record快速入门指南
一.概述 Active Record(中文名:活动记录)是一种领域模型模式,特点是一个模型类对应关系型数据库中的一个表,而模型类的一个实例对应表中的一行记录.关系型数据库往往通过外键来表述实体关系,A ...
Active Record Query Interface 数据查询接口（界面）看到第8节。
http://guides.rubyonrails.org/active_record_querying.html ✅How to find records using a variety of me ...
RoR - Introduction to Active Record
Active Record: ORM ( Object-relational Mapping)Bridges the gap between relational databases , which ...
根据现有表操作基于active record的model
指南上都是直接生成mode,然后db migrate来生成数据库,在现实场景中,很可能是反过来的例如测试表app_versions rails里面,建立model class AppVersion ...
Yii的学习(5)--Active Record的关联
官网原文:http://www.yiiframework.com/doc/guide/1.1/zh_cn/database.arr 官网中后半段为英文,而且中文的内容比英文少一些,先放到这里,之后有时 ...
Active Record 数据库模式-增删改查操作
选择数据下面的函数帮助你构建 SQL SELECT语句. 备注:如果你正在使用 PHP5,你可以在复杂情况下使用链式语法.本页面底部有具体描述. $this->db->get(); 运行 ...

随机推荐

python字符串关键点总结
python字符串关键点有下面几点: 1.一些引号分隔的字符你可以把字符串看出是Python的一种数据类型,在Python单引号或者双引号之间的字符数组或者连续的字符集合.在python中最常用的引 ...
JVM通过代理服务器连接网络的参数设置
-DproxySet=true-Dhttp.proxyHost=your.proxy.net-Dhttp.proxyPort=8080
windows 2003 server 远程桌面禁用本地资源，磁盘驱动器，串行口，复制文件
首先进入组策略编辑器(开始-运行-gpedit.msc) 不要让用户在远端桌面和本地直接拷贝文件在远端桌面上进入它的组策略编辑器在计算机配置->管理模板->Windows组件->终 ...
如何修改Oracle字符集
一.什么是Oracle字符集 Oracle字符集是一个字节数据的解释的符号集合,有大小之分,有相互的包容关系.ORACLE 支持国家语言的体系结构允许你使用本地化语言来存储,处理,检索数据.它使数据库 ...
R(五): R常用函数
工作笔记记录,会持续更新.... 目录: apply tapply lapply sapply merge substr.substring.strsplit.unlist.paste.paste0. ...
jquery 事件绑定以及解绑定
var targetSelect = $("#@(Perfix)tbData tbody tr select[data-target]"); targetSelect.off(&q ...
php发送ssl邮件
<?php /** * 邮件发送类 * 支持发送纯文本邮件和HTML格式的邮件,可以多收件人,多抄送,多秘密抄送,带附件(单个或多个附件),支持到服务器的ssl连接 * 需要的php扩展:soc ...
UI-导航控制器的使用
1.初始化导航栏控制器 2..设置导航栏的标题 3.跳到下一个页面 4.返回上一个页面 5.自定义返回页面 6.导航栏上的自定义返回按钮 7.两个导航栏显示隐藏的常用方法(当前页不显示)
Bower => 前端开发也有包管理器
摘要: 一直以来npm,pip等各种包管理器好像都和前端开发没什么太大关系,当然因为nodejs的原因可能感觉npm会亲切一些,不过终归不是针对客户端的包管理工作,所以Bower的出现确实让人眼前一亮 ...
MySQL数据库MyISAM和InnoDB存储引擎的比较
MySQL有多种存储引擎,MyISAM和InnoDB是其中常用的两种.这里介绍关于这两种引擎的一些基本概念(非深入介绍). MyISAM是MySQL的默认存储引擎,基于传统的ISAM类型,支持全文搜索 ...

脱离rails 使用Active Record

脱离rails 使用Active Record的更多相关文章

随机推荐

热门专题