This is an easy-to-use Ruby library which takes all the hard work out of writing a Yammer App.

Platforms::Yammer supports all documented API endpoints, and has the flexibility of being able to call new, updated, or undocumented API endpoints too.


This gem consists of two main parts. You need to have already created an App in Yammer before using this gem.

1. Authentication

Assuming the "Redirect URI" for your App is, in your routes file set that route to a controller of your choice. SessionsController is used in the examples below..

# config/routes.rb

Rails.application.routes.draw do
  # ...
  match '/auth/:provider/callback', to: 'sessions#callback', via: [:get, :post]
  # ...

In the Sessions controller, include the Platforms::Yammer::Authentication module and call save_identity in the callback method:

# app/controllers/sessions_controller

class SessionsController < ApplicationController
  include Platforms::Yammer::Authentication

  before_action :set_token

  def callback
    # ...
    # ...


This will give you instance variables @platforms_user, @platforms_network, @token, and @switch_network_ids, giving you details of the Yammer user. Some of this information will be useful to store in a session. See Platforms::Yammer::Authentication#save_identity for more details.

This callback method also has access to more detailed information about the logged-in user through request.env[omniauth.auth']. More information about the data that is stored in that variable can be found in the OmniAuth Auth Hash Schema description.

Switching between Yammer Networks is achieved through Platforms::Yammer::Authentication#switch_identity, which is treated as a regular API request.

2. API Requests

Use the @token, found during Authentication, to create a new Platforms::Yammer::Client. That client can then be used to make API requests.

client =
messages = client.messages.get

More detail on the configuration options for the Platforms::Yammer::Client can be found in the class documentation, including how to change the handling of HTTP errors.

Extra request parameters and headers can generally be passed in the subsequent parameters to a method:

messages = client.messages.get { :older_than => 123 }, { :custom => :header }


Add this line to your application's Gemfile:

gem 'platforms-yammer'

And then execute:

$ bundle

Or install it yourself as:

$ gem install platforms-yammer

Once the gem is installed, from your Rails directory you can run the following generator to complete the installation:

$ rails generate platforms:yammer:install

This will:

  • Complete the installation of the Platforms::Core gem; and
  • Add a basic initializer to config/initializers/platforms_yammer.rb.


REST-based APIs require authentication to get started. Please refer to the Yammer documentation for how to configure an integration.

Configuring the Keys

Edit the initializer to add the credentials of your Yammer integration:

# config/initializers/platforms_yammer.rb

Starting a New App

Your application needs to have at least Network and User models. These can be created by calling the generator:

$ rails generate platforms:core:network foo some_info:string
$ rails generate platforms:core:user bar user more_info:string
$ rake db:migrate

Typically these would actually be called "Network" and "User", but here we have called them "Foo" and "Bar".

For more detailed instructions, refer to the documentation for configuring Platforms::Core.

Adding to an Existing App

If you already have Network and User models (which let's assume are called "Foo" and "Bar" respectively), you can configure them for Platforms::Core by using the generator with the --existing-model flag:

$ rails generate platforms:core:network foo --existing-model
$ rails generate platforms:core:user bar --existing-model
$ rake db:migrate

For more detailed instructions, refer to the documentation for configuring Platforms::Core.


You can generate the documentation by running

$ rake yard

If not everything is documented, check this with:

$ yard stats --list-undoc


Please see


The gem is available as open source under the terms of the MIT License.