redirect_to with additional parameters
<p>I am a noob.</p>

<pre><code>redirect_to users_url, notice: 'Succeed.'

&lt;p id="notice"&gt;&lt;%= notice %&gt;&lt;/p&gt;
</code></pre>

<p>Then I add a <code>message</code> and it failed:</p>

<pre><code>redirect_to users_url, notice: 'Succeed.', message: 'test'

&lt;p id="notice"&gt;&lt;%= notice %&gt;&lt;/p&gt;
&lt;h1&gt;&lt;%= params[:message] %&gt;&lt;/h1&gt; # no result
&lt;h1&gt;&lt;%= message %&gt;&lt;/h1&gt; # name error
</code></pre>

<p>What's the differences between <code>users_url</code> and <code>users_path</code>?</p>