Question

I have a partial which is used all over the site. I have an image in the partial that I want to link to a certain page on all pages except one particular controller action.

1. Is there way to put in the following href without 2 if else sets?…

<a href="#">
  <img src="#" />
</a>

I’m trying to avoid doing this:

<% if (current controller != xyz) %>
  <a href="#">
<% end %>
   <img src="#" />
<% if (current controller != xyz) %>
  </a>
<% end %>

2. How can I actually check which controller called this partial?

The above code is only pseudo code.

PS. I know this isn’t that much repetition, but I’m just using this simplified case as an example. Curious if there’s something in Rails I don’t know about to avoid this.

Answer 1

This is exactly what link_to_if is for!

link_to_if(controller_name == 'xyz', image_tag('src'), 'http://target.com')

This will add the image whether the condition is true or not, and wrap it in the link only when the condition is true. There’s also the related link_to_unless which may be more semantically appropriate in your case.

Edit: I’ve updated the example above to use the correct code for checking the controller name. There’s a method available in the view, controller_name that returns a lowercase version of the name of your controller. It’s also in the params hash.