In this recent post to his site Robert Basic shares some of his experience integrating the Tactician command bus library into a Zend Expressive-based application.

I spent some time connecting the dots last week, so I decided to put together an example on how to get started with using Tactician in a Zend Expressive application. The example itself is not really useful, but it does show how to setup the dependencies and get started with these two libraries.

He briefly introduces the two pieces of technology here and then "dives in" immediately to the integration. He shows how, using the Zend Expressive skeleton application, to expand on the default "ping" endpoint and add in the Tactician library (and another library that makes it easily integrate with the DI container). He updates how the "ping" action is made in the routing, making it go through a factory. He then brings Tactician in, setting up the command bus and a simple "ping" command for the bus to use in handling the requests to the /api/ping endpoint. Complete code and explanations of each part are included in the tutorial to help you follow along.

On the SitePoint PHP blog there's a tutorial posted that wants to help demystify the command bus design pattern with the help of the Tactician package, a part of the packages from The PHP League.

Command Buses have been getting a lot of community attention lately. The topic can be quite overwhelming at first when trying to understand all the concepts and terminology, but in essence – what a Command Bus does is actually incredibly simple.

In this article, we’ll take a closer look at variations of the Command Pattern; their components; what a Command Bus is; and an example application using the Tactician package.

The article starts with a look at what the Command Bus design pattern is and where it could be put to use in an application. There's a bit of sample code showing how to implement a basic bus and the commands it would be used to execute. Their example application uses a "deck of cards" set of actions. They show how to use the Tactician library to build and execute three related commands: CreateDeck, ShuffleDeck and DrawCard. They show you how to build out the pieces you'll need - the extractor, locator and middleware - and join them all together to execute the commands.