blocks|key|76329|text|看看button_to吧。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|76330|示例显示您可以执行以下操作|76331|<%25=+button_to+"Some+Button",+:method=>+"someButton"+%25>|code-block|syntax|javascript|76332|entityMap|0|LINK|mutability|MUTABLE|url|http://api.rubyonrails.org/classes/ActionView/Helpers/UrlHelper.html#method-i-button_to^0|2|9|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@$A|T|B|U|1|V]]|C|$]]|$1|D|3|E|5|6|7|W|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|X|8|@]|9|@]|C|$I|J]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|C|$]]]|L|$M|$5|N|O|P|C|$Q|R]]]]

Take a look at <a href="http://api.rubyonrails.org/classes/ActionView/Helpers/UrlHelper.html#method-i-button_to" rel="nofollow noreferrer">button_to</a>. 

Example shows you can do something like 

<pre><code>&lt;%= button_to "Some Button", :method=&gt; "someButton" %&gt;
</code></pre>

blocks|key|76366|text|<%25=+form_tag+home_action_path,+method:+:post+do+%25>
++<%25=+submit_tag+'Call+Action'+%25>
<%25+end+%25>|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|76367|也可以使用链接|unstyled|76368|<%25=+link_to+'Call+Action',+home_action_path,+method:+:post+%25>|76369|或者，您可以使用button_to|76370|<%25=+button_to+'Call+Action',+home_action_path,+method:+:post+%25>|76371|在你的路线中|76372|post+'home/action'|76373|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|T|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|U|8|@]|9|@]|A|$B|C]]|$1|I|3|J|5|F|7|V|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|W|8|@]|9|@]|A|$B|C]]|$1|M|3|N|5|F|7|X|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|Y|8|@]|9|@]|A|$B|C]]|$1|Q|3|-4|5|F|7|Z|8|@]|9|@]|A|$]]]|R|$]]

<pre><code>&lt;%= form_tag home_action_path, method: :post do %&gt;
 &lt;%= submit_tag 'Call Action' %&gt;
&lt;% end %&gt;
</code></pre>

could also use a link

<pre><code>&lt;%= link_to 'Call Action', home_action_path, method: :post %&gt;
</code></pre>

or you can use button_to

<pre><code>&lt;%= button_to 'Call Action', home_action_path, method: :post %&gt;
</code></pre>

in your routes

<pre><code>post 'home/action'
</code></pre>

blocks|key|76457|text|另一种选择是为您的操作创建一个路由，并以这种方式调用它。原谅我，我不知道你的home_controller.rb在做什么。如果它是您主页的控制器，我相信对于Rails来说，具有home方法的pages_controller.rb更传统。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|76458|如果是这样的话，假设您要调用的方法名为call_action，|76459|你的pages_controller.rb应该看起来像这样：|76460|class+PagesController+<+ApplicationController
++#...

++def+call_action
++++<<does+something+really+nifty>>
++end

end|code-block|syntax|javascript|76461|您的config/routes.rb将如下所示：|76462|AppName::Application.routes.draw+do
++#...

++resources+:pages+do
++++collection+do
++++++get+:call_action
++++end
++end

end|76463|views/pages/home.html.erb主页上的链接将如下所示：|76464|<%25=+link_to+"Call+Action",+call_action_pages_path+%25>|76465|您应该在命令行上运行rake+routes以确保您拥有正确的路由，然后将_path放在它的末尾。|76466|如果你希望你的链接是一个按钮，你可以对其进行create+a+styled+class并将其附加到你的链接中：|76467|<%25=+link_to+"Call+Action",+call_action_pages_path,+class:+"button"+%25>|76468|或者将其包装在样式化的类中：|76469|<div+class="button">
++<%25=+link_to+"Call+Action",+call_action_pages_path+%25>
</div>|76470|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/710089/how-do-i-make-an-html-link-look-like-a-button^0|12|I|2G|4|2N|J|0|J|B|0|2|J|0|0|2|G|0|0|0|P|0|0|A|B|10|5|0|M|L|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1E|8|@$9|1F|A|1G|B|C]|$9|1H|A|1I|B|C]|$9|1J|A|1K|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|1L|8|@$9|1M|A|1N|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|1O|8|@$9|1P|A|1Q|B|C]]|D|@]|E|$]]|$1|J|3|K|5|L|7|1R|8|@]|D|@]|E|$M|N]]|$1|O|3|P|5|6|7|1S|8|@$9|1T|A|1U|B|C]]|D|@]|E|$]]|$1|Q|3|R|5|L|7|1V|8|@]|D|@]|E|$M|N]]|$1|S|3|T|5|6|7|1W|8|@$9|1X|A|1Y|B|C]]|D|@]|E|$]]|$1|U|3|V|5|L|7|1Z|8|@]|D|@]|E|$M|N]]|$1|W|3|X|5|6|7|20|8|@$9|21|A|22|B|C]|$9|23|A|24|B|C]]|D|@]|E|$]]|$1|Y|3|Z|5|6|7|25|8|@]|D|@$9|26|A|27|1|28]]|E|$]]|$1|10|3|11|5|L|7|29|8|@]|D|@]|E|$M|N]]|$1|12|3|13|5|6|7|2A|8|@]|D|@]|E|$]]|$1|14|3|15|5|L|7|2B|8|@]|D|@]|E|$M|N]]|$1|16|3|-4|5|6|7|2C|8|@]|D|@]|E|$]]]|17|$18|$5|19|1A|1B|E|$1C|1D]]]]

Another option is to create a route for your action and call it that way. Forgive me, I'm not sure what your <code>home_controller.rb</code> is doing. If it is the controller for your home page, I believe a <code>pages_controller.rb</code> with a <code>home</code> method is more conventional for Rails. 

If that were the case, and assuming the method you want to call is named <code>call_action</code>, 

Your <code>pages_controller.rb</code> would look something like:

<pre><code>class PagesController &lt; ApplicationController
 #...

 def call_action
 &lt;&lt;does something really nifty&gt;&gt;
 end

end
</code></pre>

Your <code>config/routes.rb</code> would look like:

<pre><code>AppName::Application.routes.draw do
 #...

 resources :pages do
 collection do
 get :call_action
 end
 end

end
</code></pre>

The link on your home page at <code>views/pages/home.html.erb</code> would look like this:

<pre><code>&lt;%= link_to "Call Action", call_action_pages_path %&gt;
</code></pre>

You should run <code>rake routes</code> on your command line to make sure you have the correct route, then stick <code>_path</code> on the end of it.

If you want your link to be a button, you can <a href="https://stackoverflow.com/questions/710089/how-do-i-make-an-html-link-look-like-a-button">create a styled class</a> for that and append it to your link:

<pre><code>&lt;%= link_to "Call Action", call_action_pages_path, class: "button" %&gt;
</code></pre>

Or wrap it in a styled class:

<pre><code>&lt;div class="button"&gt;
 &lt;%= link_to "Call Action", call_action_pages_path %&gt;
&lt;/div&gt;
</code></pre>

blocks|key|76475|text|+<%25=+button_to+'Invite+a+user',+new_project_invite_path,+method:+:get,+remote:+true,+class:+'btn+primary'+%25>|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|76476|如果您不希望它是一个Ajax调用，那么可以删除remote:+true|unstyled|76477|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code> &lt;%= button_to 'Invite a user', new_project_invite_path, method: :get, remote: true, class: 'btn primary' %&gt;
</code></pre>

If you don't want it to be an Ajax call then you can remove remote: true

So I feel really stupid right now, but I can't seem to find an answer.

So I have a method which needs to be called EXACTLY once, and since this is only the experimental phase, I decided that a simple button should suffice. However, I can't seem to find out how to / if I can simply call the method from a button click.

The method is in home_controller.rb and the button is in index.html.erb

Any ideas? Or is this not something I can do?

How to call a controller method from a button in rails 4

路由

所以我现在觉得自己真的很愚蠢，但我似乎找不到答案。所以我有一个只需要调用一次的方法，因为这只是一个实验阶段，我决定一个简单的按钮就足够了。然而，我似乎找不到如何/是否可以简单地通过单击按钮来调用该方法。方法在home_controller.rb中，按钮在index.html.erb中有什么想法吗？或者这不是我能做的事？

问如何从Rails4中的按钮调用控制器方法
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