README

A set of additional rules for phpstan. The intention of this rules is to foment to respect the dependency flow in a hexagonal architecture.

These rules assume that in the typical hexagonal architecture there are 3 layers: Infrastructure, Application and Domain.

There is a flow within these layers, this defines how the dependencies should interact to each other according the layer they are located in, and the flow is: Infrastructure ➡️ Application ➡️ Domain.

The interpretation of this flow is:

• The Infrastructure layer can "know" or communicate with the Application and Domain layers
• The Application layer can "known" or communicate ONLY with the Domain layer
• The Domain layer can ONLY communicate with itself

This ruleset attempts to help verifying the dependency flow is being applied properly in your project.

Installation

Run

composer require --dev cooldevguys/phpstan-dhexpendency-rules

If you use PHPStan extension installer, you're all set. If not, you need to manually register all the rules in your phpstan.neon file:

includes:
  - vendor/cooldevguys/phpstan-dhexpendency-rules/rules.neon

Configuration

You need to add your own values as parameters to your phpstan.neon:

parameters:
  myVendorName: CoolDevGuys
  vendorStrictMode: true
  ignoredExternalVendors: ['IgnoredVendor']
  infrastructureLayerName: Infra
  applicationLayerName: App
  domainLayerName: Dom

• myVendorName (string): Your project vendor
• vendorStrictMode (bool): Indicates if you want to validate that no external vendors are imported from Application or Domain layers
• ignoredExternalVendors (string[]): A list of external vendors that you want to exclude from the check
• infrastructureLayerName(string): The name you define in your project for the Infrastructure layer
• applicationLayerName(string): The name you define in your project for the Application layer
• domainLayerName(string): The name you define in your project for the Domain layer

Rules

Currently there are two rules:

• LayersDependencyFlowRule
• NoExternalVendorsAllowedFromDomainRule