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Diffstat (limited to 'railties/lib/rails/generators/rails/migration/USAGE')
| -rw-r--r-- | railties/lib/rails/generators/rails/migration/USAGE | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/railties/lib/rails/generators/rails/migration/USAGE b/railties/lib/rails/generators/rails/migration/USAGE new file mode 100644 index 0000000000..d91127aac3 --- /dev/null +++ b/railties/lib/rails/generators/rails/migration/USAGE @@ -0,0 +1,29 @@ +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 |