帮助我了解 Sinatra 中的动态布局
帮助我理解这一点；我正在学习 Sinatra（还有 Rails，呃，还有 Ruby）。
假设我正在开发一个搜索应用程序。搜索表单放置在一个 div 中，结果将放置在另一个 div 中。搜索表单通过先前的视图（可能来自登录表单）呈现到 div 中。
我想处理表单参数，执行搜索，并将结果呈现到结果 div 中。
如果我在布局中有一个“yield”并从不同的视图渲染 div，则结果 div 在渲染时会擦除搜索 div。
如果我在默认布局中定义 div，然后只渲染内容，显然布局会变得混乱：必须有两个“yields”，而且我不认为 Sinatra 支持将块传递给yields。
我尝试了 foca 的 sinatra-content-for 插件，这似乎更接近我需要的。但我不知道在哪里放置“yield_content”语句。
如果我的布局中有这个 haml：
#search
-# search form
= yield_content :search
#results
-# search results
= yield_content :results
... 在我的搜索视图中： ...
- content_for :search do
%form{:method => "post"... etc.
在结果视图中：
- content_for :results do
%table{:class => 'results'... etc.
这种方法有效，但是当我渲染结果视图时，搜索 div 被清空。我想保留它。我做错了什么吗？我应该如何设置这个？
Help me understand this; I'm learning Sinatra (and Rails for that matter, er, and Ruby).
Say I'm doing a search app. The search form is laid out in one div, and the results will be laid out in another. The search form is rendered into the div by a previous view (maybe from a login form).
I want to process the form params, perform the search, and render the results into the results div.
If I have a single "yield" in the layout and render the divs from different views, the results div erases the search div when it renders.
If I define the divs in the default layout, then just render the content, obviously the layout will be messed up: there would have to be two "yields" and I don't think Sinatra supports passing blocks in to yields.
I tried foca's sinatra-content-for plugin, and that seems closer to what I need. But I can't figure out where to place the "yield_content" statements.
If I have this haml in my layout:
#search
-# search form
= yield_content :search
#results
-# search results
= yield_content :results
... this in my search view:
- content_for :search do
%form{:method => "post"... etc.
... and this in the results view:
- content_for :results do
%table{:class => 'results'... etc.
This sort of works but when I render the results view, the search div is emptied out. I would like to have it remain. Am I doing something wrong? How should I set this up?
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我认为你的意思是你总是想显示 2 个 div，但在新的搜索中它们应该是空的，并且在结果页面上它们应该被填充。您可能可以使用一个 haml 模板，然后根据请求方法不同地填充它：（
抱歉，这是非常伪的......不是在真正的计算机上。）
I think you mean you ALWAYS want to show 2 divs, but in a new search they should be empty and on a results page they should be populated. You can probably get away w/ one haml template, and just populate it diff'tly on the request method:
(Sorry this is very pseudo... not at a real computer.)