ruby on rails - bootstrap-datepicker throws jQuery not defined -

i'm trying use bootstrap-datepicker on rails 4.2. after following instructions datepicker doesn't work , following error in javascript console.

uncaught referenceerror: jquery not defined

line raising error bootstrap-datetimepicker.js first line reference error thrown.

  // neither amd nor commonjs used. use global variables.         if (!jquery) {             throw 'bootstrap-datetimepicker requires jquery loaded first';         }         if (!moment) {             throw 'bootstrap-datetimepicker requires moment.js loaded first';         } 

application.js file

//= require jquery //= require jquery_ujs //= require turbolinks //= require bootstrap-sprockets //= require moment //= require bootstrap-datetimepicker //= require_tree .   $(function() {     $('.datepicker').data({behaviour: "datepicker"}).datepicker(); }); 

any ideas what's causing this? looks jquery isn't loading though it's placed above bootstrap-datetimepicker.js

it looks should have worked, take here: https://github.com/trevors/bs3dp-test/

are able run app successfully? if not, issue gem. difference see between application.js , https://github.com/trevors/bs3dp-test/blob/master/app/assets/javascripts/application.js have moment required before bootstrap-sprockets