galactical-relations-koans-dm
所属分类：内容生成
开发工具：Ruby
文件大小：13KB
下载次数：0
上传日期：2016-01-19 10:36:10
上 传 者：
sh-1993
说明： 银河系koans，与DataMapper。
(The galactical relations koans, with DataMapper.)
文件列表:
.rspec (30, 2016-01-19)
Gemfile (197, 2016-01-19)
Gemfile.lock (2787, 2016-01-19)
Rakefile (39, 2016-01-19)
config (0, 2016-01-19)
config\data_mapper_setup.rb (220, 2016-01-19)
lib (0, 2016-01-19)
lib\tasks (0, 2016-01-19)
lib\tasks\.keep (0, 2016-01-19)
lib\tasks\galactical_koans.rb (938, 2016-01-19)
lib\tasks\rake_helpers.rb (181, 2016-01-19)
lib\tasks\stage_descriptions.yml (973, 2016-01-19)
models (0, 2016-01-19)
models\.keep (0, 2016-01-19)
models\asteroid.rb (74, 2016-01-19)
models\astronaut.rb (76, 2016-01-19)
models\moon.rb (71, 2016-01-19)
models\planet.rb (74, 2016-01-19)
models\spaceship.rb (76, 2016-01-19)
models\sun.rb (69, 2016-01-19)
solutions (0, 2016-01-19)
solutions\01_alpha.md (241, 2016-01-19)
solutions\02_beta.md (236, 2016-01-19)
solutions\03_gamma.md (294, 2016-01-19)
solutions\04_delta.md (2448, 2016-01-19)
solutions\05_epsilon.md (358, 2016-01-19)
spec (0, 2016-01-19)
spec\galactical_relations_koans_spec.rb (3126, 2016-01-19)
spec\spec_helper.rb (3245, 2016-01-19)
# Galactical Associations Koans
Confused about database relations with DataMapper? These koans are intended as a learning tool just for you.
### Instructions
1. Clone the repository.
2. Create the database: `rake db:create`
3. Run `rake galaxy` to work progressively through the problems. Alternatively, run a single stage with `rake galaxy:stage`, e.g `rake galaxy:beta`.
If you get into a mess with the database, run `rake db:reset`.
### Stages
In the domain we have: planets, moons, a sun, and asteroids.
#### Alpha
- Suns have many planets.
- Planets belongs to a sun.
#### Beta
- Planets have many moons.
- Moons belong to a planet.
#### Gamma
- Planets have many asteroids.
- Asteroids have many planets.
#### Delta
- A spaceship has many astronauts, via crewings.
- Astronauts have many spaceships, via crewings.
- A spaceship can have a captain.
- A captain can be captain of a spaceship.
#### Epsilon
- Suns have many moons, through planets.
- Moons have a single Sun, through a planet.
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