#99 Complex Partials

最新推荐文章于 2025-09-20 00:30:34 发布

原创最新推荐文章于 2025-09-20 00:30:34 发布 · 108 阅读

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本文探讨了在不同动作下渲染部分视图的方法，提出了三种建议：使用布局渲染特定内容、通过条件语句选择不同模板以及利用yield来传递动态内容。这些方法有助于解决同一部分视图在不同上下文中呈现差异的问题。

How do you handle partials which have differences depending on the action which is rendering them? Here's three suggestions for this problem.

<!-- index.html.erb -->
<% for article in @articles %>
  <% render :layout => 'article', :object => article do %>
    <p><%=h article.description %></p>
    <p><%= link_to "Read More...", article %></p>
  <% end %>
<% end %>

<!-- show.html.erb -->
<% stylesheet 'article' %>
<% render :layout => 'article', :object => @article do %>
  <%= simple_format(h(@article.content)) %>
<% end %>

<!-- _article.html.erb -->
<div class="article">
  <h2><%= link_to_unless_current h(article.name), article %></h2>
  <div class="info">
    by <%= article.author %> on <%= article.created_at.to_s(:long) %>
    <span class="comments">
      <%= link_to pluralize(article.comments.size, 'Comment'), article %>
    </span>
  </div>
  <div class="content">
    <%= yield %>
  </div>
</div>

<!-- layouts/application.html.erb -->
<%= yield(:head) %>

# application_helper.rb
def stylesheet(*args)
  content_for(:head) { stylesheet_link_tag(*args) }
end

/* article.css */
.article .comments_link {
  display: none;
}