Oak-Ridges Moraine

Oak Ridges Moraine is a lightweight Object-Relational Mapping framework for Ruby, inspired by ActiveRecord.

Demo

Running demo.rb sets up a Dog, Human and House model. A house has many humans, humans have many dogs. Dogs belong to a human, humans belong to a house.

Instructions

1. Clone or download directory zip.
2. In the root directory run "load 'dogs.rb'".
3. Use the commands described below to mess around with the data.

Querying methods

• ::all Returns an array of objects from a specific table.

• ::find(id) Returns an object with specified id. If id is not found, returns nil.

• where(params) Returns an array of objects that match the params.

• #initialize(params={}) Creates new model using the params passed in. The params should be of the form key pointing to a value. The key will correspond to the column the value corresponds with the new value.

• #save New or updated record is persisted to database

Associations

• belongs_to(name, options={}) Creates a one to one association between two classes.
• has_many(name, options={}) Creates a one to many relationship.
• has_one_through(name, through_class, source_class) Creates a one to one relationship through another class.