README

This is an archived project and is no longer supported or updated by SilverStripe. Please do not file issues or pull-requests against this repo. If you wish to continue to develop this code yourself, we recommend you fork it or contact the maintainers directly (check latest commits for email addresses).

SilverStripe Command Pattern Module

Maintainer Contact

• Rainer Spittel (Nickname: fb3rasp) - rainer (at) silverstripe (dot) com

Requirements

• SilverStripe V2.4

Documentation

The commandpattern module enables SilverStripe to decouple business logic from the MVC structure. Commands can be executed individually and have a reference to a calling controller.

To install this module, please clone this module, copy the commands folder into the root folder of the SilverStripe installation and run a dev/build, i.e.:

http://localhost/silverstripe/dev/build

The module consists of a Factory-class which will be used to request command actions. The factory class initiates the command and returns the command object to the calling method, i.e.:

$command = CommandFactory::get_command('Test');

This call will return initiate a TestCommand object and returns the instance. get_command also accepts two optional parameters:

• first parameter is a reference to the calling controller instance (@link Controller).
• second parameter is a associated array for parameters.

Example

We want to create a command with takes two integer ('x' and 'y') values and when executing the command, it will return the result of x * y.

First create the command class in your project folder:

<?php
class TestCommand extends ControllerCommand {

	public function execute() {
		$data = $this->getParameters();
		$x = $data['x'];
		$y = $data['y'];
		return (int)$x * (int) $y;
	}	
}

Installation Instructions

Add this module into your project folder (name mapping) and run a dev/build to generate the required database schema.

Usage Overview

Implements the command pattern for SilverStripe controllers. This enables the developers to move core business logic into a dedicated command class.

Ideal for de-coupling MVC from core business domain related logic.

Known issues

n/a