title: link_to with controller_name and action name not working
body: <p>I'm working on upgrading rails 3.2 app to rails 4.2. I have stuck with one issue. link_to with controller and action name not working</p>
  
  <pre><code>&lt;%= link_to "Login", :controller =&gt; "user", :action =&gt; "login" %&gt;
  </code></pre>
  
  <p>This is the link I want to convert into rails 4 code. using the same fashion.</p>
  
  <p>I have tried this way.</p>
  
  <pre><code>&lt;%= link_to "Login", { controller: "user", action: "login" } %&gt;
  </code></pre>
  
  <p>its gives be below error:</p>
  
  <pre><code>ArgumentError: wrong number of arguments (given 2, expected 0..1)
  </code></pre>
  
  <p>Is anyone faced this issue. I have google this but not solved this. </p>