Before you can authenticate with a service, you need to set it up. Have a look at the Huginn <%= link_to 'wiki', 'https://github.com/cantino/huginn/wiki/Configuring-OAuth-applications', target: :_blank %> for guidance.

<%- Devise.omniauth_providers.each { |provider| -%>

<%= omniauth_button(provider) %>

<%- } -%>
<% @services.each do |service| %> <% end %>
<%= sortable_column 'provider', 'asc' %> <%= sortable_column 'name', 'asc' %> <%= sortable_column 'global', name: 'Global?' %>
<%= omniauth_provider_name(service.provider) %> <%= service.name %> <%= yes_no(service.global) %>
<% if service.global %> <%= link_to 'Make private', toggle_availability_service_path(service), method: :post, data: { confirm: 'Are you sure you want to remove access to your data on this service for other users?'}, class: "btn btn-default" %> <% else %> <%= link_to 'Make global', toggle_availability_service_path(service), method: :post, data: { confirm: 'Are you sure you want to grant every user on this system access to your data on this service?'}, class: "btn btn-default" %> <% end %> <%= link_to 'Delete', service_path(service), method: :delete, data: { confirm: 'Are you sure?' }, class: "btn btn-default btn-danger" %>
<%= paginate @services, :theme => 'twitter-bootstrap-3' %>