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体验新版 GitCode,发现更多精彩内容 >>
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f6e48148
编写于
7月 28, 2015
作者:
R
Robin Dupret
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Add a section about "Collection caching" [ci skip]
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guides/source/caching_with_rails.md
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@@ -103,6 +103,29 @@ If you want to cache a fragment under certain conditions, you can use
...
@@ -103,6 +103,29 @@ If you want to cache a fragment under certain conditions, you can use
<%
end
%>
<%
end
%>
```
```
#### Collection caching
The
`render`
helper can also cache individual templates rendered for a collection.
It can even one up the previous example with
`each`
by reading all cache
templates at once instead of one by one. This is done automatically if the template
rendered by the collection includes a
`cache`
call. Take a collection that renders
a
`products/_product.html.erb`
partial for each element:
```
ruby
render
products
```
If
`products/_product.html.erb`
starts with a
`cache`
call like so:
```
html+erb
<% cache product do %>
<%= product.name %>
<% end %>
All the cached templates from previous renders will be fetched at once with much
greater speed. There's more info on how to make your templates [eligible for
collection caching](http://api.rubyonrails.org/classes/ActionView/Template/Handlers/ERB.html#method-i-resource_cache_call_pattern).
### Russian Doll Caching
### Russian Doll Caching
You may want to nest cached fragments inside other cached fragments. This is
You may want to nest cached fragments inside other cached fragments. This is
...
...
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