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## Test and Deploy Ruby application to Heroku
Example Ruby application with tests on PostgreSQL database, staging and production deployment to Heroku can be found here:
[source](https://gitlab.com/ayufan/ruby-getting-started) and here: [ci](https://ci.gitlab.com/projects/4050)
### Configure project
This is how the configuration (the `.gitlab-ci.yml`) for that project looks like:
```yaml
test:
script:
- apt-get update -qy
- apt-get install -y nodejs
- bundle install --path /cache
- bundle exec rake db:create RAILS_ENV=test
- bundle exec rake test
staging:
type: deploy
script:
- gem install dpl
- dpl --provider=heroku --app=gitlab-ci-ruby-test-staging --api-key=$HEROKU_STAGING_API_KEY
only:
- master
production:
type: deploy
script:
- gem install dpl
- dpl --provider=heroku --app=gitlab-ci-ruby-test-prod --api-key=$HEROKU_PRODUCTION_API_KEY
only:
- tags
```
This project have three jobs:
1. `test` - used to test rails application,
2. `staging` - used to automatically deploy staging environment every push to `master` branch
3. `production` - used to automatically deploy production environmnet for every created tag
### Store API keys
The project requires to create two secure variables in `Project > Variables`:
1. `HEROKU_STAGING_API_KEY` - Heroku API key used to deploy staging app,
2. `HEROKU_PRODUCTION_API_KEY` - Heroku API key used to deploy production app.
Heroku API key can be found in [Manage Account](https://dashboard.heroku.com/account).
### Create Heroku application
You have to navigate to Heroku [Dashboard](https://dashboard.heroku.com/) and create new application to each of your environments.
### Create runner
To build this project you also need to have `Runner`. You can use public runners available on `ci.gitlab.com`, but you can also provide your own:
```
gitlab-ci-multi-runner register \
--non-interactive \
--url "https://ci.gitlab.com/" \
--registration-token "PROJECT_REGISTRATION_TOKEN" \
--description "ruby-2.1" \
--executor "docker" \
--docker-image ruby:2.1 \
--docker-postgres latest
```
Above command creates runner that uses `docker` (you need to have Docker installed), uses [ruby:2.1](https://registry.hub.docker.com/u/library/ruby/) image and uses [postgres](https://registry.hub.docker.com/u/library/postgres/) database.
To access PostgreSQL database you need to connect to `host: postgres` instead of default: `localhost` as `postgres` user without password.
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