node-ar

Purpose

A simple ActiveRecord like nodejs module

It supports 'has_many' and 'belongs_to' relationship

You can find and find_by* each field name

Important: it works synchronously.

Introduction

This module is based on Sannis's node-mysql-libmysqlclient. Node-Ar adds some simple features as ActiveRecord does. I want to explain that it is not completed. This should be considered an example. But I would to expand it also with your help.

So, do not hesitate to contact me for any question or doubts

My mind is open for any collaboration ;)

Installation

For installing this module try

npm install node-ar

Usage

See file in the spec folder for examples

Overview

Having a DB as ActiveRecord on Rails wants. You can able to perform select insert and update using Models like instances.

DataType (used to declare the fields)

DataType.String # the VARCHAR type DataType.Int # the INT type DataType.Boolean # the TYNINT type (tmporarly incompleted)

Model

(Static methods) Model.find( id /* as NUM */ ) # returns the instance of the model if found. Otherwise null Model.find( 'all' ) # returns an Array instance contaning all model found by performing the select. Empty array if no record found Model.find( 'first' ) # returns the instance of the model representing the first matched record if found. Otherwise null Model.find_by( where, options, limit ) # where (Object) javascipt where = { field_foo_name: field_foo_value, field_bar_name: field_bar_value, } # options (Object) javascript options = { includes: ['table_foo_name', 'table_bar_name'], joins: { table_foo_name: { // INNER JOIN table_foo_name field_bar_name: { // ON field_bar_name table_xxxx_name: 'field_xxxx_name' // = table_xxxx_name.field_xxxx_name } } } } # limit (Number) Used as LIMIT sql condition

Model.find_by_foo_field_name( value ) # return an Array containing the result of select * from table_foo_name where FOO_FIELD_NAME = VALUE. A Model single instance if field id declared as unique

Todo

What i'm going to add:

• Implement events

• Fields validation

• BUG: it doesn't delete the has_many relations while deleting a Model from DB. But I'm working to fix it.

• More documentation is coming... ;)