渲染@object 和 locals vs 渲染 :partial [英] Render @object and locals vs render :partial

问题描述

我想传递一个包含原点到特定页面的局部变量，这个变量只包含一个带有值的符号.

I want to pass a local variable that contains the origin to come on a specific page, this variable contains just a symbol with the value.

当我使用此代码时，它运行良好，可以在部分中访问原始变量:

When I use this code it works perfect, the origin variable is accessible in the partial :

render :partial => "products", :collection => @products, :locals => {:origin => :gallery}

但是当我使用此代码时，原点未设置且无法在部分中访问:

But when I use this code, the origin is not set and not accessible in the partial :

render @products, :locals => {:origin => :gallery}

这里有什么不同?第二行代码不像第一行那样渲染局部?

What is the difference here? Is the second line of code not render the partial like the first line?

推荐答案

<%= render @products %>

确实是渲染部分的简写语法.但是使用速记语法，Rails 将忽略 ":locals" 变量.Rails 指南中有更多相关内容.

Is indeed the shorthand syntax for rendering a partial. But with the shorthand syntax, Rails will ignore the ":locals" variable. There's more on this in the Rails Guides.

所以如果你想给渲染传递额外的选项，你必须指定:partial => ...".如果您想知道为什么会发生这种情况，您可以查看 Rails 来源.

So if you want to pass extra options to the render, you have to specify ":partial => ...". If you want to know why this happens, you can take a look at the Rails source.

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