PHP Quickstart Guide

This quickstart uses an OAuth2 library which can be found here:

To install the library first download the archive: https://github.com/adoy/PHP-OAuth2/archive/master.zip. Unzip the contents into a directory that your PHP script can access.

Include the following files from the library in your script:

<?php
require('path/to/client.php');
require('path/to/GrantType/IGrantType.php');
require('path/to/GrantType/AuthorizationCode.php');
?>

Create a client with your client id and secret (you can retrieve the id and secret in the nation from Settings > Developer > Register app):

<?php
$clientId = 'yourClientId';
$clientSecret = 'yourClientSecret';
$client = new OAuth2\Client($clientId, $clientSecret);
?>

Now use the client to generate the authorization url.

<?php
$redirectUrl    = 'http://www.myapp.com/oauth_callback';
$authorizeUrl   = 'https://foobar.nationbuilder.com/oauth/authorize';
$authUrl = $client->getAuthenticationUrl($authorizeUrl, $redirectUrl);
echo $authUrl;
?>

The above will output:

https://foobar.nationbuilder.com/oauth/authorize?response_type=code&client_id=yourClientId&redirect_uri=http%3A%2F%2Fwww.myapp.com%2Foauth_callback

Someone with access to the Nation's resources will have to visit that url in a browser, accept the application and be redirected back to your redirect uri with an authorization code. The request you receive will look like this:

GET http://yourapp.example.com/oauth_callback?code=123456abcdef

Use the code to set the client's access token:

<?php

$code = '123456abcdef'; 

// generate a token response 
$accessTokenUrl = 'https://foobar.nationbuilder.com/oauth/token'; 
$params = array('code' => $code, 'redirect_uri' => $redirectUrl); 
$response = $client->getAccessToken($accessTokenUrl, 'authorization_code', $params); 

// set the client token 
$token = $response['result']['access_token']; 
$client->setAccessToken($token); 
?>

The client is now ready to make resource requests

<?php 
$baseApiUrl = 'https://foobar.nationbuilder.com'; 
$response = $client->fetch($baseApiUrl . '/api/v1/people'); 
print_r($response); 
?>

The above will output something like:

Array
(
    [result] => Array
        (
            [next] => /api/v1/people?__nonce=3OUjEzI6iyybc1F3sk6YrQ&__token=ADGvBW9wM69kUiss1KqTIyVeQ5M6OwiL6ttexRFnHK9m
            [results] => Array
                (
                    [0] => Array
                        (
                            [id] => 10
                            ...

                        )
                    ...

                    [8] => Array
                        (
                            [id] => 19
                            ...
                        )


                )

        )

    [code] => 200
    [content_type] => application/json
)

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