class User < ActiveRecord::Base
end

class User < ActiveRecord::Base
has_many :books
end

class User < ActiveRecord::Base
set_table_name 'user'
set_primary_key 'pkey'
end

ITPro

http://localhost:3000/

DB
DB
DB

DB

app/models/todo.rb
AR::Base
O/R

Rails

Rails

View
Controller
Model
Rails
mongrel

View
Controller
Model

View
Controller
Model
URL
params[]

View
Controller
URL
Model
URL
params[]

View
Controller
Model.find,model.save
URL
Model
URL
params[]

View
Controller
Model.find,model.save
URL
Model
URL
params[]

View
Controller
Model.find,model.save
URL
Model
URL
params[]

Rails

Todo
paginate

Todo
paginate
HTML

Todo edit id 1

:partial
_ .rhtml

@todo
<textarea>
@todo.description

URL
redirect

app/models/todo.rb
description

class

Linux

Linux