如何在布局之外的 erb 中包含 css 或 javascript? [英] How to include a css or javascript in an erb that is outside the layout?
问题描述
抱歉，我正在编写我的第一个 Rails 应用程序.
Sorry for the slightly noobish question, as I am writing my first rails app.
我知道布局视图的想法，但是如果您正在使用它们，有没有办法包含视图特定的 js 或 css 文件?例如，我有 layouts/products.html.erb，对于 products/edit.html.erb 我想要 products_edit.css，但是我不希望所有产品视图都使用该 css，实现这一目标的最佳做法是什么?
I get the idea of the layout view, but if you are using them, is there any way to include a view specific js or css file? For example, I have layouts/products.html.erb, and for products/edit.html.erb I want products_edit.css, but I don't want that css for all product views, what is the best practice to accomplish that?
推荐答案
如果你有一个通用的 edit.css 文件，我会建议在你的布局中使用 if
If you have a generic edit.css file, I would suggest an if in your layout
<%= stylesheet_link_tag 'edit' if params[:action] == 'edit' %>
否则你可以使用content_for 带有 yield 以在头部添加额外的标签.
Otherwise you can use content_for with a yield to add additional tags into the head.
layout.html.erb
<head>
...
<%= yield(:header) if @content_for_header %>
</head>
products/edit.html.erb
<% content_for :header do -%>
<%= stylesheet_link_tag 'edit_product' %>
<% end -%>
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