In The Real World

I'm a control freak, and that means I want to own all of my routes and use Spina where I choose to. Currently, on my main site (bigmachine.io), Spina handles my courses, lessons, and old blog posts. I do not, however, let it handle the routing.
To do that, I need to know how to retrieve Spina pages:

<span class="hljs-variable">@page</span> = <span class="hljs-title class_">Spina</span><span class="hljs-symbol">:</span><span class="hljs-symbol">:Page</span>.find_by(<span class="hljs-symbol">slug:</span> params[<span class="hljs-symbol">:slug</span>])
<span class="hljs-variable">@page</span> = <span class="hljs-title class_">Spina</span><span class="hljs-symbol">:</span><span class="hljs-symbol">:Page</span>.i18n.find_by(<span class="hljs-symbol">materialized_path:</span> <span class="hljs-string">&quot;<span class="hljs-subst">#{params[<span class="hljs-symbol">:slug</span>]<span class="hljs-string">&quot;)</span></span></span>