Rails - link_to helper与data- *属性 [英] Rails - link_to helper with data-* attribute

问题描述

可能重复：

使用html5数据属性和rails的最佳方式content_tag helper？

如何在我的link_to帮助程序（Rails）中使用html5 数据 - * attrubute

How can I use html5 data-* attrubute in my link_to helper (Rails)

API说我必须使用这种格式 link_to（body，url，html_options = {}）但我在我把它放在html_options中

The API says that I have to use this format link_to(body, url, html_options = {}) but I have an error when I put it in html_options

例如：

Ex:

link_to "whatever", @whatever_path, { class: 'my_class', data-tooltip: 'what I want' }

推荐答案

只需将它们传入... Rails有一个默认的：data hash

Just pass them in... Rails has a default :data hash

= link_to body, url, :data => { :foo => 'bar', :this => 'that' }

一个问题 - 如果包含短划线，则必须用引号括住符号：

One gotcha - you must surround symbols with quotes if they include a dash:

:data => { :'foo-bar' => 'that' }

更新：在Rails 4中，下划线会自动转换破折号，所以你可以这样做：

Update: In Rails 4, underscores are automatically converted to dashes, so you can do this:

:data => { :foo_bar => 'that' }

或者，您可以直接写下它：

Alternatively you can just write it directly:

= link_to body, url, :'data-foo' => 'bar', :'data-this' => 'that'

更新2：正如评论中指出的，Ruby 1.9+允许这种语法，有些人认为它更清洁：

Update 2: As pointed out in the comments, Ruby 1.9+ allows this syntax, which some believe is cleaner:

{ data: { foo: "bar" } }

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