select2-rails gem is not working on Rails4

Question

I have tried given documentation for the select2-rails gem, but my browser console still throws an error.

Uncaught TypeError: $(...).select2 is not a

Answer 1

The problem is surely in application.js: According to their Demo App, the sequence of requiring JS plugins is as follows:

//= require jquery
//= require jquery_ujs
//= require turbolinks
//= require select2
//= require select2_locale_pt-BR
//= require_tree .

In your case, you have to load turbolinks before select2, leading to:

//= require jquery
//= require turbolinks
//= require select2
//= require jquery.ui.accordion
//= require jquery.ui.menu
//= require jquery.ui.datepicker
//= require common
//= require posts
//= require twitter/bootstrap
//= require owl.carousel
//= require vendor_js
//= require_tree .