raecoo

# before filter for api controller

def verify_authenticity_token
  @current_user = User.find_by_authentication_token(params[:auth_token])
  render status: 401, json: { message: '...' } and return unless @current_user
end

mvilrokx

# in your view (HAML + simple_form, simplified for easier reading)
= simple_form_for @bp_reading do |f|
  = f.input :recorded_at, :as => :string, :input_html => { :class => 'jquery-ui-date', :value => @bp_reading.try(:recorded_at).try(:strftime,'%m/%d/%Y')}
  = f.input :recorded_at, :as => :hidden, :input_html => { :id => 'recorded-at-alt'}
  = f.button :submit, :disable_with => "Saving...", :value => "Save"

# in your javascript (coffeescript)
$ ->
  $(".jquery-ui-date").datepicker(
    altField: "#recorded-at-alt",