Ruby on Rails
ScaffoldGenerator (Version #146)

NOTE FOR RAILS 2.0.0+

Rails 2.0.0+ breaks chapter 1 of every existing quality rails tutorial because of scaffolding. instead of doing

  ./script/generate ( model OR controller ) Foo

instead run

  ./script/generate scaffold Foo somefieldname:integer anotherfieldname:string whateverfieldsyouwant:text

then do the



rake db:drop:all; 

rake db:create:all; 

rake db:migrate; 

rake test

dance.

Scaffolding in Rails before 2.0.0
The scaffold generator writes the same code that Rails dynamic scaffolding (scaffold some_model) uses, so you get to start from the boilerplate code and keep any changes you make.

Usage:

script/generate scaffold ModelName [ControllerName] [action, …]

General Options:

-p, --pretend                    Run but do not make any changes.

-f, --force                      Overwrite files that already exist.

-s, --skip                       Skip files that already exist.
-q, --quiet                      Keep is like a secret with /dev/null.

-t, --backtrace                  Debugging: show backtrace on errors.

-h, --help                       Show this help message.

Example

ruby script\generate scaffold Aircraft

(note the not plural aspect)

Description:

The scaffold generator creates a controller to interact with a model.
If the model does not exist, it creates the model as well. The generated
code is equivalent to the “scaffold :model” declaration, making it easy
to migrate when you wish to customize your controller and views.

The generator takes a model name, an optional controller name, and a
list of views as arguments. (Starting in rails 0.14.2 controller name is not optional, omitting it generates a Nil error—really? This change of behavior is not documented in the CHANGELOG, or even the help for the program. Is it intended or a bug?). Scaffolded actions and views are created
automatically. Any views left over generate empty stubs.

The scaffolded actions and views are:
index, list, show, new, create, edit, update, destroy

If a controller name is not given, the plural form of the model name
will be used. The model and controller names may be given in “CamelCase”
or under_score and should not be suffixed with ‘Model’ or ‘Controller’.
Both model and controller names may be prefixed with a module like a
file path; see the Modules Example for usage.

Example:

./script/generate scaffold Account Bank debit credit

This will generate an Account model and “BankController” with a full test
suite and a basic user interface. Now create the accounts table in your
database and browse to “http://localhost/bank/” — voila, you’re on Rails!

To see full scaffold usage run:
script/generate scaffold

Modules Example:

./script/generate controller ‘admin/credit_card’ suspend late_fee

This will generate a CreditCard model and CreditCardController controller
in the admin module.

Rails version 0.10.0

Going further with scaffolds

Alternately you can use “”http://wiki.rubyonrails.com/rails/pages/ActiveScaffold" class="existingWikiWord">ActiveScaffold"

which provides all of the same functionality as the default scaffold generator but uses Ajax to make the scaffold easier to use. Here are some of the advantages of the AjaxScaffold:

Generates a production ready, fully styled, interface for managing models
Generates valid XHTML and CSS.
Guaranteed to work on Firefox 1+, IE 6+ and Safari
Gracefully degrades when Javascript is not available

——

Suggestion : Shouldn’t script/generate scaffold take an optional DB table name as an argument ? Temporarily renaming tables just to be allowed to use the generator sucks…

// If you don’t want to have rails generate the database you can always specify —skip-migration on as a parameter to script/generate scaffold

Suggestion to help with above: Create a database view based on the table

_Question: does “generate scaffold” really emulate the “scaffold” method ?
If so, how do I merge two different scaffolded models in one controller?, like I’d do with



 scaffold :foo, :suffix=>true

 scaffold :bar, :suffix=>true

category: Generator

——

Attribute Types
The type parameter is normally one of the migrations native types, which is one of the following: :primary_key, :string, :text, :integer, :float, :decimal, :datetime, :timestamp, :time, :date, :binary, :boolean.

http://www.railsbrain.com/api/rails-2.0.2/doc/index.html?a=M001532&name=TableDefinition#column

——
//a dutch Scaffold article can be found here

//Scaffold in Rails 2.0
screencast