如何将Javascript文件加载到rails html erb

Question

Um trying to load a javascript file as follows to my html.erb file

 <script src="/public/javascripts/test.js" type="text/javascript" /> 

its available on the public folder and its in the root directory

root/public/javascript

but it giving me an error saying

 "NetworkError: 404 Not Found  - http://0.0.0.0:3000/public/javascripts/test.js"

what could possibly wrong ? is there a different way to include a javascipt file in rails ?

Answer 1

如果javascript文件位于Rails 3.x的任何资产文件夹（资产，供应商，软件包）中，则可以通过添加以下内容将脚本添加到html.erb文件中：

<%= javascript_include_tag('test.js') %>

Answer 2

Rails defaults to using the asset pipeline, so custom js files need to go into the app/assets/javascript directory. Than you wouldn't even need to load the file in your view.

but as to your question.

To serve the files from the public directory, you will need to enable a config setting

config.serve_static_assets = true

You'd commonly put this in one of you environment config files.

Answer 3

You don't use public. Public is the implied root of the server.

The server will look for a file in public, then try to route it through your router if it doesn't find a match.

You also may want to consider using the javascript_include_tag helper if you are using the asset pipeline.

Answer 4

To server files from public directory do above setting and hit

config.serve_static_assets = true
<script src="/javascripts/test.js" type="text/javascript" />