class DeviseTokenAuth::SessionsController

def destroy
  # remove auth instance variables so that after_filter does not run
  user = remove_instance_variable(:@resource) if @resource
  client_id = remove_instance_variable(:@client_id) if @client_id
  remove_instance_variable(:@token) if @token
  if user and client_id and user.tokens[client_id]
    user.tokens.delete(client_id)
    user.save!
    render json: {
      success:true
    }, status: 200
  else
    render json: {
      errors: ["User was not found or was not logged in."]
    }, status: 404
  end
end