ABOUT ROM

Setup

Create a postgres database called about-rom:

$ createdb about-rom

Basic Walk through

Examples for a talk about using rom-rb. Uses a simple blog setup with Users, Posts and Comments. Use the console to play around:

$ ./run scenarios/basic_sql

ROM >> command(:users).create.call(name: 'Alice')
=> {:id=>1, :email=>nil, :name=>"Alice"}

ROM >> relation(:users).first
=> {:id=>1, :email=>nil, :name=>"Alice"}

You can also create an about string for the Scenario (help was taken by Pry).

class MyScenario < Scenario
  about <<-EOS
    Helpful text goes here.
  EOS
end

$ ./run scenarios/my_scenario
> about
  Helpful text goes here

NOTES

• rom-sql wraps around the (excellent) Sequel gem
• rom-mongo wraps around the Mongo gem
• rom-redis wraps around the Redis gem

Basics

ROM is not a framework, it's a toolkit. What does that even mean? Out of the box ROM doesn't do anything. Fully assembled, ROM still kind of doesn't do anything.

Step 1: Setup ROM Step 2: Define your relations and commands Step 3: Build some sort of interface on top of ROM

Nested Inputs

Multi-store implementation

Understanding Transproc

Serious Business