zammad/config/routes/overview.rb

Zammad::Application.routes.draw do
  api_path = Rails.configuration.api_path

  # overviews
  match api_path + '/overviews',            :to => 'overviews#index',   :via => :get
  match api_path + '/overviews/:id',        :to => 'overviews#show',    :via => :get
  match api_path + '/overviews',            :to => 'overviews#create',  :via => :post
  match api_path + '/overviews/:id',        :to => 'overviews#update',  :via => :put
  match api_path + '/overviews/:id',        :to => 'overviews#destroy', :via => :delete

end