我试图在application.html.erb中定义的单个页面上呈现部分内容。
这应该特定于URI http://website.com/（如果你愿意，可以是根或索引）。
的routes.rb
has root :to => static_pages#home
application.html.erb显示
<!DOCTYPE html>
<html>
<head>
<title><%= full_title(yield(:title)) %></title>
<%= stylesheet_link_tag "application", media: "all",
"data-turbolinks-track" => true %>
<%= javascript_include_tag "application", "data-turbolinks-track" => true %>
<%= csrf_meta_tags %>
<%= render 'layouts/shim' %>
</head>
<body>
<%= render 'layouts/header' %>
<%= render 'layouts/homepage_slider' %>
<div class="container">
<%= yield %>
</div>
<%= render 'layouts/footer' %>
</body>
</html>
我想渲染＆lt;＆lt; layouts / homepage_slider＆gt;＆gt;仅在/或我的索引路径上。它需要在<div class=container">之外，否则我会特别将它添加到static_pages / home文件中。
答案 0 :(得分：1)
你可以在它周围包装一个if / else语句。
<% if current_page?(root_path) %>
<%= render 'layouts/homepage_slider' %>
<% end %>
或
<%= render "layouts/homepage_slider" if current_page?(root_path) %>
答案 1 :(得分：0)
在 Ubuntu 20.04 中使用 Rails 6 时，我也遇到了同样的挑战。
对我来说，我需要在val data = Seq(("BNG", "school"),("HYD", "school,res"),("MUM", "school,res,hos")).toDF("city","types")
+----+--------------+
|city| types|
+----+--------------+
| BNG| school|
| HYD| school,res|
| MUM|school,res,hos|
+----+--------------+
data.withColumn("isSchool", array_contains(split(col("types"),","), "school")).withColumn("isRes", array_contains(split(col("types"),","), "res")).withColumn("isHos", array_contains(split(col("types"),","), "hos"))
+----+--------------+--------+-----+-----+
|city| types|isSchool|isRes|isHos|
+----+--------------+--------+-----+-----+
| BNG| school| true|false|false|
| HYD| school,res| true| true|false|
| MUM|school,res,hos| true| true| true|
+----+--------------+--------+-----+-----+
的head标签中渲染一个部分，以显示在app/views/layouts/application.html.erb的单个页面上。
这是我的做法：
我在app/views/products/show.html.erb中创建了部分内容：
app/views/shared/_facebook_metatags.html.erb然后将其包含在<!-- Here's an example of Facebook's Open Graph Markup -->
<!-- https://developers.facebook.com/docs/sharing/webmasters -->
<meta property="og:url" content=<%= "#{@product_url}" %> />
<meta property="og:type" content="article" />
<meta property="og:title" content=<%= "#{@product.name}" %> />
<meta property="og:description" content=<%= "#{@product.short_description}" %> />
<meta property="og:image" content=<%= "#{@product.image_url}" %> />
的head标签中，以显示在app/views/layouts/application.html.erb页面上。
app/views/products/show.html.erb仅此而已。
我希望这会有所帮助