place_events_controller.rb

class PlaceEventsController < ApplicationController
  before_filter :authenticate_user!
  before_filter :weeks_ago_range

  respond_to :json, only: [:edit, :update]

 [snip edit and index]

  def update
    place_event = current_user.place_events.find params[:id]
    place_event.update_attributes params[:place_event]
    respond_with place_event
  end

end