DADI API Documentation

API documentation middleware for DADI API

• Introduction
• Installation
• Generating Code Snippets
• Documenting custom endpoints
• Showing useful example values
• Excluding Collections, Endpoints and Fields

Introduction

This package provides a set of auto-generated documentation for your API installation, reading information from the collection schemas and custom endpoints to describe the available HTTP methods and parameters required to interact with the API.

A guide to acquiring an access token

Describing a GET request for the User collection

Describing a POST request for the User collection

Installation

$ npm install @dadi/apidoc --save

Add an apidoc section to the API's configuration file

"apidoc": {
  "title": "<Project Name> Content API",
  "description": "This is the _Content API_ for [Example](http://www.example.com).",
  "markdown": false,
  "path": "docs",
  "generateCodeSnippets": false,
  "themeVariables": "default",
  "themeTemplate": "triple",
  "themeStyle": "default",
  "themeCondenseNav":	true,
  "themeFullWidth": false
}

Initialise the middleware

This example shows API Doc being initialised in the installed API's entry point, the main.js file, after the server has started.

var server = require('@dadi/api')
var config = require('@dadi/api').Config
var log = require('@dadi/api').Log

server.start(function() {
  log.get().info('API Started')
})

// add documentation route
require('@dadi/apidoc').init(server, config)

Browse the documentation

By default the documentation can be browsed using the route /api/1.0/docs.

For example of your API is running at http://api.example.com then your documentation is available at http://api.example.com/api/1.0/docs.

Generating Code Snippets

If you want to generate code snippets (made possible by the configuration option generateCodeSnippets) you'll need to ensure sure your system has the following:

1. Ruby, and the Ruby gem awesome_print:

$ gem install awesome_print

2. The httpsnippet package:

$ npm install httpsnippet --global

Documenting custom endpoints

API collections are automatically documented using values from with the collection schema files. To have your documentation include useful information about custom endpoints, add JSDoc comments to the endpoint files:

/**
 * Adds two numbers together.
 *
 * ```js
 * var result = add(1, 2);
 * ```
 *
 * @param {int} `num1` The first number.
 * @param {int} `num2` The second number.
 * @returns {int} The sum of the two numbers.
 * @api public
 */

Showing useful example values

To show example data in the documentation that isn't simply the default of "Hello World!", you can add properties to fields in the API collection schema.

example

The example property is a static value that will be the same every time you view the documentation.

"platform": {
  "type": "String",
  "required": true,
  "example": "twitter",
  "validation": {
    "regex": {
      "pattern": "twitter|facebook|instagram"
    }
  }
}

testDataFormat

The testDataFormat property allows you to specify any type from the faker package, which will insert a random value of the selected type each time the documentation is viewed:

"email": {
  "type": "String",
  "required": true,
  "validation": {
    "regex": {
      "pattern": ".+@.+"
    }
  },
  "testDataFormat": "{{internet.email}}"
}

See a list of available options here.

Excluding Collections, Endpoints and Fields

Often an API build contains collections and collection fields that are meant for internal use and including them in the API documentation is undersirable.

To exclude collections and fields from your generated documentation, see the following sections.

Excluding Collections

Add a private property to the collection specification's settings section:

{
  "fields": {
    "title": {
      "type": "String",
      "required": true
    },
    "author": {
      "type": "Reference",
      "settings": {
        "collection": "people"
      }
    }
  },
  "settings": {
    "cache": true,
    "count": 40,
    "sort": "title",
    "sortOrder": 1,
    "private": true
  }
}

Excluding Endpoints

Add a private property to the endpoint file's model.settings section:

module.exports.get = function (req, res, next) {
  res.setHeader('content-type', 'application/json')
  res.statusCode = 200
  res.end(JSON.stringify({message: 'Hello World'}))
}

module.exports.model = {
  "settings": {
    "cache": true,
    "authenticate": false,
    "private": true
  }
}

Excluding Fields

Add a private property to the field specification:

{
  "fields": {
    "title": {
      "type": "String",
      "required": true
    },
    "internalId": {
      "type": "Number",
      "required": true,
      "private": true
    }
  },
  "settings": {
    "cache": true,
    "count": 40,
    "sort": "title",
    "sortOrder": 1
  }
}

Roadmap

• Template customisation

Licence

DADI is a data centric development and delivery stack, built specifically in support of the principles of API first and COPE.

Copyright notice (C) 2016 DADI+ Limited [email protected] All rights reserved

This product is part of DADI. DADI is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version ("the GPL"). If you wish to use DADI outside the scope of the GPL, please contact us at [email protected] for details of alternative licence arrangements.

This product may be distributed alongside other components available under different licences (which may not be GPL). See those components themselves, or the documentation accompanying them, to determine what licences are applicable.

DADI is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

The GNU General Public License (GPL) is available at http://www.gnu.org/copyleft/gpl.html. A copy can be found in the file GPL distributed with these files.

This copyright notice MUST APPEAR in all copies of the product!