Uncaught ReferenceError: JST is not defined on Rails 4

Question

我创建了 Rails 4.2 项目并尝试使用 Backbone 作为前端。但是当我尝试使用 JST 作为模板时，出现以下错误。

Uncaught ReferenceError: JST is not defined

当然，我在 application.js 文件中包含了相应的要求集，如下所示。

//= require jquery
//= require jquery_ujs
//= require underscore
//= require hamlcoffee
//= require backbone
//= require backbone.marionette
//
//= require_tree ../templates/
//= require ./myapp
//= require ./models
//= require ./views
//= require ./controllers
//
//= require_tree .

我使用JST的文件如下。

Backbone.Marionette.Renderer.render = (template, data) ->
  console.log "rendering template #{template}"
  if (!JST[template])
    throw "Template '#{template}' not found!"
  JST[template](data)

这是我的 gemfile。

source 'https://rubygems.org'


# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '4.2.0'
# Use sqlite3 as the database for Active Record
gem 'sqlite3'
# Use SCSS for stylesheets
gem 'sass-rails', '~> 5.0'
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
# Use CoffeeScript for .coffee assets and views
gem 'coffee-rails', '~> 4.1.0'
# See https://github.com/sstephenson/execjs#readme for more supported runtimes
# gem 'therubyracer', platforms: :ruby

# Use jquery as the JavaScript library
gem 'jquery-rails'
# Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
gem 'turbolinks'
# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 2.0'
# bundle exec rake doc:rails generates the API under doc/api.
gem 'sdoc', '~> 0.4.0', group: :doc

# Use ActiveModel has_secure_password
# gem 'bcrypt', '~> 3.1.7'

# Use Unicorn as the app server
# gem 'unicorn'

# Use Capistrano for deployment
# gem 'capistrano-rails', group: :development

gem 'bootstrap-sass', '3.2.0.0'
gem 'marionette-rails'
gem 'bcrypt',         '3.1.7'
gem 'haml_coffee_assets'
gem 'execjs'

group :development, :test do
  # Call 'byebug' anywhere in the code to stop execution and get a debugger console
  gem 'byebug'

  # Access an IRB console on exception pages or by using <%= console %> in views
  gem 'web-console', '~> 2.0'

  # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
  gem 'spring'
end

如您所见，我正在尝试将 Rails 4.2 用于 Backbone 组合。所以，我希望知道 Rails 4.2 是否不支持 Backbone JST 文件，或者我是否需要什么来激活 JST。

请帮帮我！

Answer 1

终于，我找到了 JST 未定义错误的原因。这是因为 JST 文件路径（在我的例子中是 path = JST["backbone/apps/" + template] ）出错了。

Answer 2

尝试将 sprockets-rails gem 降级到版本 v=2.3.3。

对我有帮助。

Uncaught ReferenceError: JST is not defined on Rails 4

Uncaught ReferenceError: JST is not defined on Rails 4

ruby-on-rails

backbone.js

jst