scribe/docs/documenting-endpoint-body-parameters.md

Documenting body and file parameters for an endpoint

Scribe can get information about your endpoint's body parameters in two ways:

• the fully-manual way (using the @bodyParam annotation)
• the mostly-automatic way (using FormRequests)

The manual way: Specifying body parameters with @bodyParam

To describe body parameters for your endpoint, use the @bodyParam annotation on the method handling it.

The @bodyParam annotation takes the name of the parameter, its type, an optional "required" label, and then its description. Valid types:

• int / integer
• string
• number / float
• boolean
• array, object (see Handling array and object parameters below)
• file (see Documenting File Uploads below)

By default, Scribe will generate a random value for each parameter, to be used in the example requests and response calls. If you'd like to use a specific example value, you can do so by adding Example: your-example-here to the end of your description.

.. Tip:: You can exclude a particular parameter from the generated examples by ending with `No-example` instead. The parameter will still be included in the text of the documentation, but it won't be included in response calls or shown in the example requests.

Here's an example:

/**
 * @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
 * @bodyParam another_one number This won't be added to the examples. No-example
 */
public function createPost()
{
    // ...
}

The body parameters will be included in the generated documentation text and example requests:

If you're using a FormRequest in your controller, you can also add the @bodyParam annotation there instead, and Scribe will fetch it.

/**
 * @bodyParam title string The title of the post.
 * @bodyParam body string required The content of the post.
 */
class CreatePostRequest extends \Illuminate\Foundation\Http\FormRequest
{

}

// in your controller...
public function createPost(CreatePostRequest $request)
{
    // ...
}

Handling array and object parameters

Sometimes you have body parameters that are arrays ir ibjects. To handle them in @bodyparam, Scribe follows Laravel's convention:

• For arrays: use <name>.*
• For objects: use <name>.<key>.

This means that, for an array of objects, you'd use <name>.*.<key>.

You can also add a "parent" description if you like, by using @bodyParam with the type as "object" or "array".

/**
 * @bodyParam user object required The user details
 * @bodyParam user.name string required The user's name
 * @bodyParam user.age string required The user's age
 * @bodyParam friend_ids array List of the user's friends.
 * @bodyParam friend_ids.* int User's friends.
 * @bodyParam cars.*.year string The year the car was made. Example: 1997
 * @bodyParam cars.*.make string The make of the car. Example: Toyota
 */

Using FormRequests

If you're using Laravel or Dingo FormRequests in your controller method, Scribe can extract information about your parameters from your validation rules. Since these rules only describe validation logic, you can also add a bodyParameters method where you can add a description and example for each parameter.

Not all rules are supported. Here are the supported rules:

• required
• bool
• string
• int
• numeric
• array
• file
• timezone
• email
• url
• ip
• json
• date
• date_format
• image
• in

Custom rules are not supported. Scribe will ignore any rules it does not support.

For each parameter in rules() it encounters, Scribe will:

• generate an example value that passes all the supported rules.
• generate a description that combines the supported validation rules with any description you specify in bodyParameters().

.. Note:: If you have rules that are not supported, Scribe's generated value might not pass their validation checks. You can get around that by manually specifying an example in the `bodyParameters()` method.

Here's an example:

class CreatePostRequest extends FormRequest
{
    public function rules()
    {
        return [
            'content' => 'string|required|min:100',
            'title' => 'string|required|max:400',
            'author_display_name' => 'string',
            'author_homepage' => 'url',
            'author_timezone' => 'timezone',
            'author_email' => 'email|required',
            'publication_date' => 'date_format:Y-m-d',
            'category' => ['in:news,opinion,quiz', 'required'],
        ];
    }

    public function bodyParameters()
    {
        return [
            'content' => [
                'description' => 'Contents of the post',
            ],
            'title' => [
                'description' => 'The title of the post.',
                'example' => 'My First Post',
            ],
            'publication_date' => [
                'description' => 'Date to be used as the publication date.',
            ],
            'category' => [
                'description' => 'Category the post belongs to.',
            ],
        ];
    }
}

This gives:

Documenting file uploads

You can document file inputs by using @bodyParam or FormRequest rules with a type file. You can add a description and example as usual.

For files, your example should be the absolute path to a file that exists on your machine. If you don't specify an example, Scribe will generate a fake file for example requests and response calls.

/**
 * @bodyParam caption string The image caption
 * @bodyParam image file required The image.
 */

.. Note:: Adding a file parameter will automatically set the 'Content-Type' header in example requests and response calls to `multipart/form-data`.