Authorize.net AIM Plugin for CakePHP 1.3.x

Original Author: Jon Adams (http://github.com/pointlessjon)

WARNING: This plugin is still under development and may not work as expected. Please use with caution and test your implementation thoroughly before putting into production. I do intend to release a v0.1 soon that will include tests and a few more minor tweaks. ~Rick

Description

This plugin provides an API to the Authorize.net AIM connection method. It can be used to accept payments by credit card or e-check.

Installation

Download the plugin and place it in app/plugins/authnet.

Setup the Authnet datasource by defining it in your database configuration.

class DATABASE_CONFIG {
	var $authnet = array(
		'datasource' => 'Authnet.AuthnetSource',
		'server' => 'test',	// 'test' or 'live'
		'test_request' => false,
		'login' => 'API_LOGIN_ID',
		'key' => 'API_TRANSACTION_KEY'		
		);
	}

Setup

This plugin contains a behavior, a model, and a datasource that can all be used together or used separately. It also contains a controller and example views if you want a complete solution.

Total Solution and Examples

For a complete solution, you can access some of the plugin's built-in functional examples at:

app/authnet/authnet_transactions/add
app/authnet/authnet_transactions/update
app/authnet/authnet_transactions/delete

No database is required if you use this method.

Attaching to Existing Models

If you need to store the transaction details to a database after processing the Authorize.net transaction there is a behavior to make things easier. It can be attached using the $actsAs array in your existing model.

var $actsAs = array('Authnet.Authnet');

With your database configuration in place, it will automatically authorize payment during validation, and capture payment during save.

Special Configuration

To bypass auth during validation set the authDuringValidation field to false.

var $actsAs = array(
	'Authnet.Authnet' => array(
		'authDuringValidation' => true,
	),
);

Your model field names can be different than the field names the authnet plugin uses. Simply setup a fields array like the example below for the fields you need to change.

var $actsAs = array(
	'Authnet.Authnet' => array(
		'fields' => array(
			'card_num' => 'number',
			'exp_date' => 'expiration',
		),
	),
);

Security

There are a few security considerations that need to be thought about before implementing this plugin.

Accepting credit card or e-check payments should only be done over HTTPS.
In most cases it is against processor terms to store full credit card data. Only store the information you need. It may be enough to store only the transaction id, and/or the last 4 digits of the customer's credit card. If you need the ability to periodically charge the customer's card, consider a solution like ARB or CIM.

More Information

Read more about AIM Implementation from Authorize.net at http://developer.authorize.net/api/aim/.

booya!

neilholcomb/authnet