问题描述
我想创建一个隐藏字段并在一个帮助器中创建一个链接，然后将两者都输出到我的erb.
I want to create a hidden field and create a link in one helper and then output both to my erb.
<%= my_cool_helper "something", form %>
应该把结果
link_to "something", a_path
form.hidden_field "something".tableize, :value => "something"
助手的定义是什么样的? link_to和form.hidden_field的详细信息并不重要.重要的是，如何从两个不同的调用返回输出.
What would the definition of the helper look like? The details of what link_to and the form.hidden_field don't really matter. What matters is, how do I return the output from two different calls.
推荐答案
有几种方法可以做到这一点.
There are several ways to do this.
请记住，现有的rails辅助程序(例如link_to等)仅输出字符串.您可以将字符串连接在一起并返回该字符串(如果事情很简单，这是我大部分时间所做的事情).
Remember that the existing rails helpers like link_to, etc, just output strings. You can concatenate the strings together and return that (which is what I do most of the time, if things are simple).
EG:
link_to( "something", something_path ) + #NOTE THE PLUS FOR STRING CONCAT
form.hidden_field('something'.tableize, :value=>'something')
如果您要做的事情更复杂，则可以将该代码放一部分，然后让助手调用render :partial.
If you're doing things which are more complicated, you could just put that code in a partial, and have your helper call render :partial.
如果您正在做的事情比这还要复杂，那么您可能想看看errtheblog的 block_to_partial 助手，很酷
If you're doing more complicated stuff than even that, then you may want to look at errtheblog's block_to_partial helper, which is pretty cool
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