链接器中的link_to与块 [英] link_to in helper with block

问题描述

我正在尝试使它起作用:

I'm trying to get this to work:

link_to("#", class: "add_fields btn btn-success") do
  name
  content_tag(:i, "", :class => "icon-plus icon-white")
end

但是它只显示i(twitter-bootstrap css)指定的图标，而不显示name中的文本，我在做什么错了?

but it only shows me the icon specified by i (twitter-bootstrap css) and not the text in name, what am I doing wrong?

推荐答案

该块的返回值成为其内容.仅返回最后一行.

The return value of the block becomes its content. Only the last line is being returned.

您必须将两个字符串与+串联在一起，以产生单个返回值:

You must concatenate the two strings together with + to produce a single return value:

link_to("#", class: "add_fields btn btn-success") do
  name + content_tag(:i, "", class: "icon-plus icon-white")
end

您需要使用html_safe来防止标记的内容被自动进行HTML编码:

You'll need to use html_safe to prevent the content of your tag from automatically being HTML encoded:

link_to("#", class: "add_fields btn btn-success") do
  name + content_tag(:i, "", class: "icon-plus icon-white").html_safe
end

从Twitter Bootstrap的个人经验来看，我知道您将需要在name和content_tag之间留一个空格:

Speaking from personal experience with Twitter Bootstrap, I know you will need a space between name and content_tag:

link_to("#", class: "add_fields btn btn-success") do
  name + ' ' + content_tag(:i, "", class: "icon-plus icon-white").html_safe
end

或者，如果您位于ERB模板中，则可以使用<%=输出这两个值:

Alternatively, if you are inside an ERB template, you can output both values with <%=:

<%= link_to( ... ) do %>
  <%= name %>
  <%= content_tag( ... ) %>
<% end %>

这篇关于链接器中的link_to与块的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！