Disclaimer

This project is not intended for public usage and is not open for contributions. Icelab takes no responsibility for usage in your projects.

Snowpack

Snowpack is lightwight application framework for Icelab’s Ruby applications. It builds upon dry-system, and integrates Hanami router/controller (unstable branches) for HTTP request handling, and rom-rb for database persistence.

Getting started

Install the gem:

gem install snowpack -v "1.0.0.alpha2"

Generate a new application:

snowpack new my_app

Then enter the application and (if required) generate a new slice:

./bin/run generate slice main

CLI

Snowpack's application CLI is accessible via the bin/run executable, which provides access to various commands. To learn about these, run:

$ ./bin/run
Commands:
  run assets [SUBCOMMAND]
  run console                            # Open interactive console
  run db [SUBCOMMAND]
  run generate [SUBCOMMAND]

To learn about sub-commands, run the parent command:

$ ./bin/run db
Commands:
  run db create                                  # Create database
  run db create_migration [NAME]                 # Create new migration file
  run db drop                                    # Delete database
  run db migrate                                 # Migrates database
  run db reset                                   # Drop, create, and migrate database
  run db rollback                                # Rollback database to a previous migration
  run db sample_data                             # Load sample data
  run db seed                                    # Load database seeds
  run db structure [SUBCOMMAND]
  run db version                                 # Print schema version

To learn about any specific command, pass the -h or --help option:

$ ./bin/run db migrate --help
Command:
  run db migrate

Usage:
  run db migrate

Description:
  Migrates database

Options:
  --env=VALUE, -e VALUE                 # Application environment
  --target=VALUE, -t VALUE              # Target migration number
  --help, -h                            # Print this help

Console

An application console is available via bin/run console. It provides convenient access to various components:

=> starting my_app[development] console
=> my_app[development] booted in in 0.4s
my_app[development]>

Console helpers

The console offers convenient access to all rom-rb relations:

my_app[development]> users
=> #<Persistence::Relations::Users dataset=#<Sequel::Postgres::Dataset: "SELECT \"id\", \"email\", \"encrypted_password\", \"access_token\", \"access_token_expiration\", \"active\", \"created_at\", \"updated_at\", \"name\" FROM \"users\" ORDER BY \"users\".\"id\"">>

As well as all slices:

my_app[development]> main
=> MyApp::Main::Slice

As well as any root-level registrations on the slices:

my_app[development]> main.user_repo
# => #<MyApp::Main::UserRepo struct_namespace=MyApp::Main::Entities auto_struct=true>