mack-data_mapper

This gem provides Mack integration with the ORM Framework, DataMapper.

For more information on DataMapper please visit:

http://www.datamapper.org

== Notes

The database.yml file for a DataMapper backed application would look something like this:

MySQL:

development: default: adapter: mysql database: my_app_development host: localhost username: my_db_user password: password

test: default: adapter: mysql database: my_app_test host: localhost username: my_db_user password: password

production: default: adapter: mysql database: my_app_production host: localhost username: my_db_user password: password

PostgreSQL:

development: default: adapter: postgres database: my_app_development host: localhost username: my_db_user password: password

test: default: adapter: postgres database: my_app_test host: localhost username: my_db_user password: password

production: default: adapter: postgres database: my_app_production host: localhost username: my_db_user password: password

SQLite3:

development: default: adapter: sqlite3 database: db/my_app_development.db

test: default:
adapter: sqlite3 database: db/my_app_test.db

production: default:
adapter: sqlite3 database: db/my_app_production.db

== Testing

Tests are wrapped in a transaction so that any database activities get rolled back at the end of the test. This works with both RSpec and Test::Unit::TestCase

== Rake tasks

Drops (if it exists) the database and then creates it for your environment.

rake db:recreate

Creates the database for your environment.

rake db:create

Drops the database for your environment.

rake db:drop

Creates your test and development databases. Does NOT create your production database!

rake db:create:all

Drops your test and development databases. Does NOT create your production database!

rake db:drop:all

Drops and creates your test and development databases. Does NOT create your production database!

rake db:recreate:all

Migrate the database through scripts in db/migrations.

rake db:migrate

Rolls the schema back to the previous version. Specify the number of steps with STEP=n.

rake db:rollback

Raises an error if there are pending migrations.

rake db:abort_if_pending_migrations

Generates a controller, a model, a migration, and tests for the given resource.

rake generate:scaffold

Generates a model, a migration, and a test for the given resource.

rake generate:model

Generates a migration for the given columns

rake generate:migration