Datum - Object-relational mapping in Rails

Use Datum to connects database tables to their respective classes. The library is provided within a base class that require zero configuration. The many methods allow for mapping between classes and existing tables through associations.

Features and Examples

• Have new class inherit from base class to allow access to methods

class TableClass < Datum
end

• Associations are implement through class methods

class Child < Datum
  has_many :items,
    class_name: "Item",
    foreign_key: :owner_id
end

or

class Child < ApplicationRecord
  belongs_to :parent,
    class_name: "Parent",
    foreign_key: :child_id
extend

or

class Parent < ApplicationRecord
  has_many: items,
    through: :childs
end

if class_name, foreign_key, and primary_key are not given, association will be automated base on the names of the classes.

Some Available Methods

• .all fetch all rows in a table and return it as a Datum object.
• .find takes an id(integer) as an argument and find the first row in tables that matches that id.
• .save if object already exist in the table, update it with the current params, else add it to the table.
• .where take in an params hash and use it to find all the rows in the table that matches those params.