ROR本地安裝
一、安裝Ruby
1、下載Ruby(http://www.ruby-lang.org)安裝包
雙擊安裝，安裝過(guò)程中注意選中"Enable RubyGems"
2、打開(kāi)"命令提示符cmd"，輸入"ruby -v"查看版本號(hào)，則表示ruby安裝成功
二、安裝Rails
1、下載JDK(http://java.sun.com/)，安裝，否則下面的"gem install"會(huì)提示錯(cuò)誤
2、下載Rails(http://www.rubyonrails.org) 這里的版本為:rails-2.0.2.gem
3、下載Rails安裝需要的庫(kù)(http://rubyforge.org/)，注意有版本依賴問(wèn)題。
這里的版本為:
activesupport-2.0.2.gem
activerecord-2.0.2.gem
actionpack-2.0.2.gem
actionmailer-2.0.2.gem
activeresource-2.0.2.gem
打開(kāi)"命令提示符cmd"執(zhí)行以下命令:
gem install activesupport-2.0.2.gem
gem install activerecord-2.0.2.gem
gem install actionpack-2.0.2.gem
gem install actionmailer-2.0.2.gem
gem install activeresource-2.0.2.gem
gem install rails-2.0.2.gem
安裝成功即可
或者將上面所有的.gem放在一個(gè)目錄中，然后直接在cmd中輸入下面的任何一個(gè)命令即可。
gem install rails -l
gem install rails -l --include-dependencies
gem install -l rails-2.0.2.gem
4、在cmd中運(yùn)行"rails -v"，顯示版本號(hào)，表示安裝成功
在cmd中運(yùn)行"rails <path>/new application"創(chuàng)建一個(gè)新項(xiàng)目
如"rails d:/new application"則可在D:\下看到新建的項(xiàng)目new
以上沒(méi)有出錯(cuò)則rails安裝成功
5、使用：
運(yùn)行 rails path/to/your/new/application 創(chuàng)建一個(gè)新的項(xiàng)目。
運(yùn)行 ruby path/to/your/new/application/script/server 啟動(dòng)服務(wù)。
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了解RubyGems
1、什么是Gem?
gem是Ruby程序或庫(kù)的打包方式，比如gem install rails就是安裝rails程序的gem
我們可以拿gem和war、jar類比
但是gem還擔(dān)當(dāng)了Java里maven的角色，就是一個(gè)庫(kù)管理工具，可以遠(yuǎn)程下載和安裝Ruby庫(kù)
2、常用gem命令：
gem build -- Build a gem file from a specification
gem cert -- Support signing and managing signed gems
gem check -- Check installed gems for problems
gem cleanup -- Cleanup old versions in the repository
gem contents -- Display the files contained in an installed gem
gem dependency -- List the dependencies of a gem
gem environment -- Display information about the gem environment
gem help -- Provide help about gem commands
gem install -- Installing a gem
gem list -- List gems starting with a string
gem query -- Query for a list of gems
gem rdoc -- Generate the RDoc files for an installed gem
gem search -- List gems containing a string
gem specification -- Extract the Gem::Specification from a gem file
gem uninstall -- Uninstalling a gem
gem unpack -- Unpack an installed gem to the current directory
gem update -- Update your installed gems
3、升級(jí)已經(jīng)安裝的gem：
因?yàn)閞uby1.86默認(rèn)安裝的gem是0.94版的，現(xiàn)在最新的1.01已經(jīng)出來(lái)了，將rubygems-update*.gem下載在某個(gè)目錄，在cmd下到此目錄，按如下指令即可升級(jí)：
gem install rubygems-update -l
update_rubygems
