link_to 当前页面加上/与参数合并 [英] link_to the current page plus/merged with a param

问题描述

有点垒球问题，但我的 Google Fu 此刻让我逃过了一劫.

A bit of a softball question, but my Google Fu escapes me at the moment.

如何链接到当前页面，然后指定要合并到查询字符串中的参数?

How do I link to the current page but then specify params to be merged into the query string?

例如，如果当前页面是 /resources，我希望能够指定诸如 current_page_plus(:param => 'attribute') 之类的东西来评估输出到 /resources?param=attribute.

For instance, if the current page is /resources, I want to be able to specify something like current_page_plus(:param => 'attribute') that evaluates out to /resources?param=attribute.

这也有望与现有属性合并，因此如果当前页面是 /resources?a=b&c=d，则 current_page_plus(:c => 'e') 将评估为 /resources?a=b&c=e.

This would hopefully also merge with existing attributes, so if the current page was /resources?a=b&c=d, then current_page_plus(:c => 'e') would evaluate to /resources?a=b&c=e.

推荐答案

您可以使用 url_for 传递参数.

You can use url_for passing the params.

url_for(params.merge(:c => "e"))

如果您使用像 link_to 这样内部使用 url_for 的助手，您可以跳过 url_for 并直接传递 has.

If you use an helper like link_to that internally uses url_for you can skip the url_for and pass the has directly.

link_to "Page", params.merge(:c => "e")

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