Adding Javascript in Rails

Question

I'm using Rails 3.0. I want to add a Javascript file show_javascript.js that is in /public/javascripts/ to a view show.html.erb.

The show.html.erb file takes the <head>...</head> part from the template application.html.erb

I'm wondering how I should add it.

Nathan Couch · Accepted Answer · 2012-10-26 00:53:13Z

1

Assuming you have a generic stylesheet layout you could add the following to application.html.erb:

<%= javascript_link_tag 'show' if params[:action] == 'show' %>

You could even use content_for params plus yield in the <head> section like so:

layout.html.erb
<head>
  <%= yield(:header) if @content_for_header %>
</head>

product/show.html.erb
<% content_for :header do -%>
  <%= javascript_link_tag 'show_product' %>
<% end -%>

edited Oct 26, 2012 at 0:53

answered Oct 25, 2012 at 3:31

Nathan Couch

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3 Comments

sameera207 Over a year ago

I think @Nathan has given the most perfect answer, if it is used only for show.html.erb, then using content_for params plus yield is the way to go. (its just that Nathan has to change his css tag to js tag :D)

Nathan Couch Over a year ago

@sameera207 fixed thanks, lol, don't know what I was thinking :P

Chris Jacob Over a year ago

Isn't it javascript_include_tag? apidock.com/rails/v4.1.8/ActionView/Helpers/AssetTagHelper/…

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