Ruby rails Note 1

I recently started to read the Good Book Ruby on Rails developed by instructor Li Gang. It is a very good book and notes. I didn't use rails 2. 0, only use
Rails 1.2.6.

1) install rails 1.2.6
Because it is used on the network
Gem install rails -- remote will press 2. 0 version, do not like it, so
Related 1 is downloaded online. 2. Install Package 6
Http://rubyforge.org/frs? Group_id = 307 download rails (I downloaded version 1.2.6 );
Http://rubyforge.org/projects/activesupport to download activesupport (I downloaded version 1.4.4 );
Http://rubyforge.org/projects/activerecord/ to download activerecord (I downloaded version 1.15.6 );
Http://rubyforge.org/projects/actionpack to download actionpack (I downloaded version 1.13.6 );
Http://rubyforge.org/projects/actionmailer to download actionmailer (I downloaded version 1.3.6 );
Http://rubyforge.org/projects/aws to download actionwebservice (I downloaded version 1.2.6 );
Http://rubyforge.org/projects/rake to download Rake (I downloaded version 0.8.1 );
All the above downloaded files include zip and gem;
Install later
D: \ rails> gem install activesupport-1.4.4.gem (equivalent effect of D: \ rails> gem install activesupport-V 1.4.4)
Successfully installed activesupport, version 1.4.4
Installing Ri documentation for activesupport-1.4.4...
Installing rdoc documentation for activesupport-1.4.4...
 
D: \ rails> gem install activerecord-1.15.6.gem
Successfully installed activerecord, version 1.15.6
Installing Ri documentation for activerecord-1.15.6...
Installing rdoc documentation for activerecord-1.15.6...
 
D: \ rails> gem install actionpack-1.13.6.gem
Successfully installed actionpack, version 1.13.6
Installing Ri documentation for actionpack-1.13.6...
Installing rdoc documentation for actionpack-1.13.6 ..
 
D: \ rails> gem install actionmailer-1.3.6.gem
Successfully installed actionmailer, version 1.3.6
Installing Ri documentation for actionmailer-1.3.6...
Installing rdoc documentation for actionmailer-1.3.6...
 
D: \ rails> gem install actionwebservice-1.2.6.gem
Successfully installed actionwebservice, version 1.2.6
Installing Ri documentation for actionwebservice-1.2.6...
Installing rdoc documentation for actionwebservice-1.2.6...
 
D: \ rails> gem install rake-0.8.1.gem
Successfully installed rake, version 0.8.1
Installing Ri documentation for rake-0.8.1...
Installing rdoc documentation for rake-0.8.1...

D: \ rails> gem install rails-1.2.6.gem
Successfully installed rails, version 1.2.6

The installation process has ended. You can check the environment:
D: \ rails> rails
Usage: D:/rails/Ruby/bin/rails/path/to/Your/APP [Options]
Options:
 
Running rails-V displays the version number, indicating that the installation is successful.

2) create an application: rails firstapp
3) Start the server. Be sure to go to The firstapp directory, use Ruby script/server, and then use localhost: 3000. You can change the port.
Ruby script/serve-P 3002
4) change the database. yml file in the config directory to MySQL
Development:
Adapter: MySQL
Database: firstapp_development
Username: Root
Password: 123456
Port: 3306
HOST: localhost
5) generate control layer and model layer
Ruby script \ generate scaffold model name (Controller name)
6) Chinese problem (I used the connection encoding in phpMyAdmin 2.7, MySQL 5, and mysql5 my. ini using GBK)
A to create a table, such as to display Chinese fields or tables, collate with gbk-2312
In database B. yml, add the encoding: utf8
The C page is saved and edited (I use DW 8) with UTF-8 encoding. Otherwise, garbled characters are displayed on the page.
D. Add
<Meta http-equiv = "Content-Type" content = "text/html; charset = UTF-8"/>
E. In Applicaion. Rb under the config directory, add
Def set_charset
@ Headers ["Content-Type"] = "text/html; charset = UTF-8"
@ Response. headers ["Content-Type"] = "text/html; charset = UTF-8"
Suppress (activerecord: statementinvalid) Do
Activerecord: base.connection.exe cute 'set names UTF-8'
End
End