IDoc - Generate documentation for laravel API



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Laravel IDoc - The API Documentation Generator

Automatically generate an interactive API documentation from your existing Laravel routes. Take a look at the example documentation. Inspired by Laravel Api Documentation Generator



Introduction.

Laravel IDoc generator (interactive documentation generator) is a seamless and complete plugin for generating API documentation from your Laravel's codebase. It is inspired by the laravel-apidoc-generator, ReDoc and the Open API initiative from Swagger. IDoc has been built with extendability so that it can easily adapt with your use case.

Demo

Features

Installation

Note: PHP 7 and Laravel 5.5 or higher are the minimum dependencies.

$ composer require ovac/idoc

Laravel

Publish the config file by running:

php artisan vendor:publish --tag=idoc-config

This will create an idoc.php file in your config folder.

Lumen

Usage

$ php artisan idoc:generate

Configuration

Before you can generate your documentation, you'll need to configure a few things in your config/idoc.php.

For instance, suppose your configuration looks like this:

return [
     //...,

     /*
     * The routes for which documentation should be generated.
     * Each group contains rules defining which routes should be included ('match', 'include' and 'exclude' sections)
     * and rules which should be applied to them ('apply' section).
     */
    'routes' => [
        [
            /*
             * Specify conditions to determine what routes will be parsed in this group.
             * A route must fulfill ALL conditions to pass.
             */
            'match' => [

                /*
                 * Match only routes whose domains match this pattern (use * as a wildcard to match any characters).
                 */
                'domains' => [
                    '*',
                    // 'domain1.*',
                ],

                /*
                 * Match only routes whose paths match this pattern (use * as a wildcard to match any characters).
                 */
                'prefixes' => [
                    'api/*',
                ],

                /*
                 * Match only routes registered under this version. This option is ignored for Laravel router.
                 * Note that wildcards are not supported.
                 */
                'versions' => [
                    'v1',
                ],
            ],

            //...
        ],
    ],

This means documentation will be generated for routes in all domains ('*' is a wildcard meaning 'any character') which match any of the patterns 'api/*' or 'v2-api/*', excluding the 'users.create' route and any routes whose names begin with admin., and including the 'users.index' route and any routes whose names begin with healthcheck.. (The versions key is ignored unless you are using Dingo router). Also, in the generated documentation, these routes will have the header 'Authorization: Bearer: {token}' added to the example requests.

You can also separate routes into groups to apply different rules to them:

<?php
return [
     //...,

     'routes' => [
          [
              'match' => [
                  'domains' => ['v1.*'],
                  'prefixes' => ['*'],
              ],
              'include' => [],
              'exclude' => [],
              'apply' => [
                  'headers' => [
                      'Token' => '{token}',
                      'Version' => 'v1',
                  ],
              ],
          ],
          [
              'match' => [
                  'domains' => ['v2.*'],
                  'prefixes' => ['*'],
              ],
              'include' => [],
              'exclude' => [],
              'apply' => [
                  'headers' => [
                      'Authorization' => 'Bearer: {token}',
                      'Api-Version' => 'v2',
                  ],
              ],
          ],
];

With the configuration above, routes on the v1.* domain will have the Token and Version headers applied, while routes on the v2.* domain will have the Authorization and Api-Version headers applied.

Note: the include and exclude items are arrays of route names. THe * wildcard is supported. Note: If you're using DIngo router, the versions parameter is required in each route group. This parameter does not support wildcards. Each version must be listed explicitly,

To generate your API documentation, use the idoc:generate artisan command.

$ php artisan idoc:generate

It will generate documentation using your specified configuration.

Documenting your API

This package uses these resources to generate the API documentation:

Grouping endpoints

This package uses the HTTP controller doc blocks to create a table of contents and show descriptions for your API methods.

Using @group in a controller doc block creates a Group within the API documentation. All routes handled by that controller will be grouped under this group in the sidebar. The short description after the @group should be unique to allow anchor tags to navigate to this section. A longer description can be included below. Custom formatting and <aside> tags are also supported. (see the Documentarian docs)

Note: using @group is optional. Ungrouped routes will be placed in a "general" group.

Above each method within the controller you wish to include in your API documentation you should have a doc block. This should include a unique short description as the first entry. An optional second entry can be added with further information. Both descriptions will appear in the API documentation in a different format as shown below. You can also specify an @group on a single method to override the group defined at the controller level.

/**
 * @group User management
 *
 * APIs for managing users
 */
class UserController extends Controller
{

    /**
     * Create a user
     *
     * [Insert optional longer description of the API endpoint here.]
     *
     */
     public function createUser()
     {

     }

    /**
     * @group Account management
     *
     */
     public function changePassword()
     {

     }
}

Specifying request parameters

To specify a list of valid parameters your API route accepts, use the @bodyParam, @queryParam and @pathParam annotations.


/**
 * @group Items
 */
class ItemController extends Controller
{

    /**
     * List items
     *
     * Get a list of items.
     *
     * @authenticated
     * @responseFile responses/items.index.json
     *
     * @return \Illuminate\Http\Response
     */
    public function index()
    {
        //...
    }

    /**
     * Store item
     *
     * Add a new item to the items collection.
     *
     * @bodyParam name string required
     * The name of the item. Example: Samsung Galaxy s10
     *
     * @bodyParam price number required
     * The price of the item. Example: 100.00
     *
     * @authenticated
     * @response {
     *      "status": 200,
     *      "success": true,
     *      "data": {
     *          "id": 10,
     *          "price": 100.00,
     *          "name": "Samsung Galaxy s10"
     *      }
     * }
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\Response
     */
    public function store(Request $request)
    {
        //...
    }

    /**
     * Get item
     *
     * Get item by it's unique ID.
     *
     * @pathParam item integer required
     * The ID of the item to retrieve. Example: 10
     *
     * @response {
     *      "status": 200,
     *      "success": true,
     *      "data": {
     *          "id": 10,
     *          "price": 100.00,
     *          "name": "Samsung Galaxy s10"
     *      }
     * }
     * @authenticated
     *
     * @param  \App\Item  $item
     * @return \Illuminate\Http\Response
     */
    public function show(Item $item)
    {
        //...
    }

They will be included in the generated documentation text and example requests.

Result: Result

Note: a random value will be used as the value of each parameter in the example requests. If you'd like to specify an example value, you can do so by adding Example: your-example to the end of your description. For instance:

    /**
     * @pathParam location_id required The id of the location.
     * @queryParam user_id required The id of the user. Example: me
     * @queryParam page required The page number. Example: 4
     * @bodyParam user_id int required The id of the user. Example: 9
     * @bodyParam room_id string The id of the room.
     * @bodyParam forever boolean Whether to ban the user forever. Example: false
     */

Note: You can also add the @bodyParam annotations to a \Illuminate\Foundation\Http\FormRequest subclass:

/**
 * @bodyParam title string required The title of the post.
 * @bodyParam body string required The title of the post.
 * @bodyParam type string The type of post to create. Defaults to 'textophonious'.
 * @bodyParam author_id int the ID of the author
 * @bodyParam thumbnail image This is required if the post type is 'imagelicious'.
 */
class MyRequest extends \Illuminate\Foundation\Http\FormRequest
{

}

public function createPost(MyRequest $request)
{
    // ...
}

Indicating auth status

You can use the @authenticated annotation on a method to indicate if the endpoint is authenticated. A field for authentication token will be made available and marked as required on the interractive documentation.

Providing an example response

You can provide an example response for a route. This will be displayed in the examples section. There are several ways of doing this.

@response

You can provide an example response for a route by using the @response annotation with valid JSON:

/**
 * @response {
 *  "id": 4,
 *  "name": "Jessica Jones",
 *  "roles": ["admin"]
 * }
 */
public function show($id)
{
    return User::find($id);
}

Moreover, you can define multiple @response tags as well as the HTTP status code related to a particular response (if no status code set, 200 will be returned):

/**
 * @response {
 *  "id": 4,
 *  "name": "Jessica Jones",
 *  "roles": ["admin"]
 * }
 * @response 404 {
 *  "message": "No query results for model [\App\User]"
 * }
 */
public function show($id)
{
    return User::findOrFail($id);
}

@transformer, @transformerCollection, and @transformerModel

You can define the transformer that is used for the result of the route using the @transformer tag (or @transformerCollection if the route returns a list). The package will attempt to generate an instance of the model to be transformed using the following steps, stopping at the first successful one:

  1. Check if there is a @transformerModel tag to define the model being transformed. If there is none, use the class of the first parameter to the transformer's transform() method.
  2. Get an instance of the model from the Eloquent model factory
  3. If the parameter is an Eloquent model, load the first from the database.
  4. Create an instance using new.

Finally, it will pass in the model to the transformer and display the result of that as the example response.

For example:

/**
 * @transformercollection \App\Transformers\UserTransformer
 * @transformerModel \App\User
 */
public function listUsers()
{
    //...
}

/**
 * @transformer \App\Transformers\UserTransformer
 */
public function showUser(User $user)
{
    //...
}

/**
 * @transformer \App\Transformers\UserTransformer
 * @transformerModel \App\User
 */
public function showUser(int $id)
{
    // ...
}

For the first route above, this package will generate a set of two users then pass it through the transformer. For the last two, it will generate a single user and then pass it through the transformer.

Note: for transformer support, you need to install the league/fractal package

composer require league/fractal

@responseFile

For large response bodies, you may want to use a dump of an actual response. You can put this response in a file (as a JSON string) within your Laravel storage directory and link to it. For instance, we can put this response in a file named users.get.json in storage/responses:

{"id":5,"name":"Jessica Jones","gender":"female"}

Then in your controller, link to it by:

/**
 * @responseFile responses/users.get.json
 */
public function getUser(int $id)
{
  // ...
}

The package will parse this response and display in the examples for this route.

Similarly to @response tag, you can provide multiple @responseFile tags along with the HTTP status code of the response:

/**
 * @responseFile responses/users.get.json
 * @responseFile 404 responses/model.not.found.json
 */
public function getUser(int $id)
{
  // ...
}

Generating responses automatically

If you don't specify an example response using any of the above means, this package will attempt to get a

response by making a request to the route (a "response call"). A few things to note about response calls:

Open-API 3.0 spec file

The generator automatically creates an Open-API 3.0 spec file, which you can import to use within any external api application.

The default base URL added to the spec file will be that found in your Laravel config/app.php file. This will likely be http://localhost. If you wish to change this setting you can directly update the url or link this config value to your environment file to make it more flexible (as shown below):

'url' => env('APP_URL', 'http://yourappdefault.app'),

If you are referring to the environment setting as shown above, then you should ensure that you have updated your .env file to set the APP_URL value as appropriate. Otherwise the default value (http://yourappdefault.app) will be used in your spec file. Example environment value:

APP_URL=http://yourapp.app

Further modification

The info file in the view folder can be further modified to add introductions and further documentation.

Credits

This software uses the following open source packages:

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License

MIT