Ruby on Rails安装gem best_in_place

Question

帮助了解问题所在 - 添加到项目best_in_place gem。的Gemfile：

gem 'best_in_place', '~> 3.0.1'

的application.js：

//= require jquery
//= require jquery_ujs   
//= require best_in_place
//= require jquery-ui
//= require best_in_place.jquery-ui
//= require bootstrap-sprockets
//= require turbolinks
//= require_tree .

tasks.coffe：

jQuery ->
      $('.best_in_place').best_in_place();

错误：

Sprockets::FileNotFound in Tasks#index

Showing /Users/alexandr.dmitrenko/tasklist/app/views/layouts/application.html.erb where line #6 raised:

couldn't find file 'best_in_place' with type 'application/javascript'

screenshot