ZF Apigility Documentation

Introduction

This Zend Framework module can be used with conjunction with Apigility in order to:

• provide an object model of all captured documentation information, including:
  • All APIs available.
  • All services available in each API.
  • All operations available for each service.
  • All required/expected Accept and Content-Type request headers, and expected Content-Type response header, for each available operation.
  • All configured fields for each service.
• provide a configurable MVC endpoint for returning documentation.
  • documentation will be delivered in both HTML or serialized JSON by default.
  • end-users may configure alternate/additional formats via content-negotiation.

This module accomplishes all the above use cases by providing an endpoint to connect to (/apigility/documentation[/:api[-v:version][/:service]]), using content-negotiation to provide both HTML and JSON representations.

Requirements

Please see the composer.json file.

Installation

Run the following composer command:

$ composer require zfcampus/zf-apigility-documentation

Alternately, manually add the following to your composer.json, in the require section:

"require": {
    "zfcampus/zf-apigility-documentation": "^1.2-dev"
}

And then run composer update to ensure the module is installed.

Finally, add the module name to your project's config/application.config.php under the modules key:

return [
    /* ... */
    'modules' => [
        /* ... */
        'ZF\Apigility\Documentation',
    ],
    /* ... */
];

zf-component-installer

If you use zf-component-installer, that plugin will install zf-apigility-documentation as a module for you.

Configuration

User Configuration

This module does not utilize any user configuration.

System Configuration

The following configuration is defined by the module to ensure operation within a Zend Framework 2 MVC application.

namespace ZF\Apigility\Documentation;

use Zend\ServiceManager\Factory\InvokableFactory;
use Zend\View\Model\ViewModel;

return [
    'router' => [
        'routes' => [
            'zf-apigility' => [
                'child_routes' => [
                    'documentation' => [
                        'type' => 'segment',
                        'options' => [
                            'route'    => '/documentation[/:api[-v:version][/:service]]',
                            'constraints' => [
                                'api' => '[a-zA-Z][a-zA-Z0-9_.]+',
                            ],
                            'defaults' => [
                                'controller' => Controller::class,
                                'action'     => 'show',
                            ],
                        ],
                    ],
                ],
            ],
        ],
    ],
    'service_manager' => [
        'factories' => [
            ApiFactory::class => Factory\ApiFactoryFactory::class,
        ],
    ],
    'controllers' => [
        'factories' => [
            Controller::class => ControllerFactory::class,
        ],
    ],
    'zf-content-negotiation' => [
        'controllers' => [
            Controller::class => 'Documentation',
        ],
        'accept_whitelist' => [
            Controller::class => [
                0 => 'application/vnd.swagger+json',
                1 => 'application/json',
            ],
        ],
        'selectors' => [
            'Documentation' => [
                ViewModel::class => [
                    'text/html',
                    'application/xhtml+xml',
                ],
                JsonModel::class => [
                    'application/json',
                ],
            ],
        ],
    ],
    'view_helpers' => [
        'aliases' => [
            'agacceptheaders'         => View\AgAcceptHeaders::class,
            'agAcceptHeaders'         => View\AgAcceptHeaders::class,
            'agcontenttypeheaders'    => View\AgContentTypeHeaders::class,
            'agContentTypeHeaders'    => View\AgContentTypeHeaders::class,
            'agservicepath'           => View\AgServicePath::class,
            'agServicePath'           => View\AgServicePath::class,
            'agstatuscodes'           => View\AgStatusCodes::class,
            'agStatusCodes'           => View\AgStatusCodes::class,
            'agtransformdescription'  => View\AgTransformDescription::class,
            'agTransformDescription'  => View\AgTransformDescription::class,
        ],
        'factories' => [
            View\AgAcceptHeaders::class        => InvokableFactory::class,
            View\AgContentTypeHeaders::class   => InvokableFactory::class,
            View\AgServicePath::class          => InvokableFactory::class,
            View\AgStatusCodes::class          => InvokableFactory::class,
            View\AgTransformDescription::class => InvokableFactory::class,
        ],
    ],
    'view_manager' => [
        'template_path_stack' => [
            __DIR__ . '/../view',
        ],
    ],
];

ZF2 Events

This module has no events or listeners.

ZF2 Services

View Helpers

The following list of view helpers assist in making API documentation models presentable in view scripts.

• ZF\Apigility\Documentation\View\AgAcceptHeaders (a.k.a agAcceptHeaders) for making a list of Accept headers, escaped for HTML.
• ZF\Apigility\Documentation\View\AgContentTypeHeaders (a.k.a agContentTypeHeaders) for making a list of Content-Type headers, escaped for HTML.
• ZF\Apigility\Documentation\View\AgServicePath (a.k.a agServicePath) for making an HTML view representation of the route configuration of a service path.
• ZF\Apigility\Documentation\View\AgStatusCodes (a.k.a agStatusCodes) for making an escaped list of status codes and their messages.
• ZF\Apigility\Documentation\View\AgTransformDescription (a.k.a agTransformDescription) for transforming the written descriptions into Markdown.

Factories

ZF\Apigility\Documentation\ApiFactory

The ApiFactory service is capable of producing an object-graph representation of the desired API documentation that is requested. This object-graph will be composed of the following types:

• ZF\Apigility\Documentation\Api: the root node of an API.
• ZF\Apigility\Documentation\Services: an array of services in the API (a service can be one of a REST or RPC style service).
• ZF\Apigility\Documentation\Operations: an array of operations in the service.
• ZF\Apigility\Documentation\Fields: an array of fields for a service.