mirror of
https://github.com/rails/rails.git
synced 2022-11-09 12:12:34 -05:00
29 lines
1.1 KiB
Text
29 lines
1.1 KiB
Text
Description:
|
|
Stubs out a new database migration. Pass the migration name, either
|
|
CamelCased or under_scored, and an optional list of attribute pairs as arguments.
|
|
|
|
A migration class is generated in db/migrate prefixed by a timestamp of the current date and time.
|
|
|
|
You can name your migration in either of these formats to generate add/remove
|
|
column lines from supplied attributes: AddColumnsToTable or RemoveColumnsFromTable
|
|
|
|
Example:
|
|
`./script/generate migration AddSslFlag`
|
|
|
|
If the current date is May 14, 2008 and the current time 09:09:12, this creates the AddSslFlag migration
|
|
db/migrate/20080514090912_add_ssl_flag.rb
|
|
|
|
`./script/generate migration AddTitleBodyToPost title:string body:text published:boolean`
|
|
|
|
This will create the AddTitleBodyToPost in db/migrate/20080514090912_add_title_body_to_post.rb with
|
|
this in the Up migration:
|
|
|
|
add_column :posts, :title, :string
|
|
add_column :posts, :body, :text
|
|
add_column :posts, :published, :boolean
|
|
|
|
And this in the Down migration:
|
|
|
|
remove_column :posts, :published
|
|
remove_column :posts, :body
|
|
remove_column :posts, :title
|