David Hill

It looks like the problem is that the parameters being passed into link_to_if aren't quite right.

The documentation for the function at api.rubyonrails.org shows this as the signature for the method:
link_to_if(condition, name, options = {}, html_options = {}, &block)

The first parameter you pass will be evaluated down to true/false, which determine whether or not a link is rendered (true), or just text (false). After that you can pass in the text to display (klass.name) and the URL options (controller, action, etc).

Hope that helps!

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