inst/shiny-examples/02-auth/README.md

In RGA: A Google Analytics API Client

How it works:

1. The app generates a link to the authorizion page
2. Once user authorize the application, the user is redirected back to the app page with the addition of a URL parameter code: http://example.com/path/to/app/?code=xxxx
3. The app parses the code URL parameter using the shiny::parseQueryString() function
4. The app receives the access token credentials using a POST request
5. The app creates an object of class httr::token2 which is used to query the API using the functions of the RGA package

To obtain OAuth 2.0 credentials for your application, complete these steps:

1. Creation of a new project (can be skipped if the project is already created):
   • Open the page https://console.developers.google.com/project in your favorite browser;
   • Click on Create Project blue button at the top left of the page;
   • Enter the name of the project into the PROJECT NAME field in the pop-up window;
   • Click Create to confirm the creation of the project.
2. Enabling access to the Google Analytics API:
   • Select your project from the project list on https://console.developers.google.com/project page;
   • Select APIs & auth and then APIs sub-menu in the left sidebar;
   • Click on the Analytics API link in the Advertising APIs section;
   • Click Enable API for activation Analytics API.
3. Creating a new application:
   • Select APIs & auth and then Credentials sub-menu in the left sidebar;
   • Click on Add credentials blue button at the top left of the page;
   • Select OAuth 2.0 client ID in the pop-up window;
   • Select Web application from Application type list;
   • Change name of the client if you need;
   • Add exact URL where you application hosted in the Authorized redirect URIs field;
   • Click on the Create blue button to confirm the creation of the client ID.
4. Obtaining Client ID and Client secret:
   • Select the project from the project list on the https://console.developers.google.com/project page;
   • Select APIs & auth and then Credentials sub-menu in the left sidebar;
   • Click on name of the client from the Name column in the OAuth 2.0 client IDs table;
   • Click on the Download JSON button at the top and save this file as creds.json in the application root directory.

RGA documentation built on May 2, 2019, 6:47 a.m.