Routes I used to connect my app to Dropbox. Not shown is the Dropbox config file I made. it contains an array of the app key and app secret.

Dropbox_Connect_Route.php

<?php

/*
|--------------------------------------------------------------------------
| Connect to Dropbox
|--------------------------------------------------------------------------
*/
Route::get('connect/dropbox', array('before' => 'auth', function() {
    $app_info = Dropbox\AppInfo::loadFromJson(Config::get('dropbox.credentials'));
    $webAuth = new Dropbox\WebAuthNoRedirect($app_info, "PHP-Example/1.0");
    $authorizeUrl = $webAuth->start();

    echo link_to($authorizeUrl, 'Authorize with Dropbox');
}));
Route::get('connect/dropbox/finish', array('before' => 'auth', function() {
    $code = Input::get('code');
    $app_info = Dropbox\AppInfo::loadFromJson(Config::get('dropbox.credentials'));
    $webAuth = new Dropbox\WebAuthNoRedirect($app_info, "PHP-Example/1.0");
    list($accessToken, $dropboxUserId) = $webAuth->finish(Input::get('code'));
    
    // Save or update the Dropbox access record
    $user_dropbox = UserDropbox::where('user_id', Auth::user()->id)->first();
    if(!$user_dropbox) {
        UserDropbox::create(array(
            'user_id'       =>  Auth::user()->id,
            'dropbox_uid'   =>  $dropboxUserId,
            'access_token'  =>  $accessToken
        ));
    }
    else {
        $user_dropbox->dropbox_uid  =   $dropboxUserId;
        $user_dropbox->access_token =   $accessToken;
        $user_dropbox->save();
    }

    $dbxClient = new Dropbox\Client($accessToken, "PHP-Example/1.0");
    $accountInfo = $dbxClient->getAccountInfo();
    print_r($accountInfo);
}));