Integrating Devise and Spina

Integrating with Devise means creating our own Spina::Auth module, which is pretty straightforward:

<span class="hljs-comment"># frozen_string_literal: true</span>

<span class="hljs-comment"># Used as Spina&#x27;s authentication module</span>
<span class="hljs-keyword">module</span> <span class="hljs-title class_">BigAuth</span>
  <span class="hljs-keyword">extend</span> <span class="hljs-title class_">ActiveSupport::Concern</span>

  included <span class="hljs-keyword">do</span>
    helper_method <span class="hljs-symbol">:current_spina_user</span>
    helper_method <span class="hljs-symbol">:logged_in?</span>
    helper_method <span class="hljs-symbol">:logout_path</span>
  <span class="hljs-keyword">end</span>

  <span class="hljs-comment"># Spina user falls back to devise user session in the case there is one and it is of a superadmin.</span>
  <span class="hljs-keyword">def</span> <span class="hljs-title function_">current_spina_user</span>
    <span class="hljs-title class_">Spina</span><span class="hljs-symbol">:</span><span class="hljs-symbol">:Current</span>.user |<span class="hljs-params"></span>|= current_user <span class="hljs-keyword">if</span> current_user.is_admin?
  <span class="hljs-keyword">end</span>

  <span class="hljs-comment"># Returns falsy unless there is a logged in superadmin</span>
  <span class="hljs-keyword">def</span> <span class="hljs-title function_">logged_in?</span>
    <span class="hljs-keyword">return</span> current_spina_user <span class="hljs-keyword">if</span> user_signed_in?
    <span class="hljs-literal">false</span>
  <span class="hljs-keyword">end</span>

  <span class="hljs-comment"># Not used</span>
  <span class="hljs-keyword">def</span> <span class="hljs-title function_">logout_path</span>
    spina.admin_logout_path
  <span class="hljs-keyword">end</span>

  <span class="hljs-keyword">private</span>

  <span class="hljs-comment"># Redirects user to sign in if not logged in as a superadmin</span>
  <span class="hljs-keyword">def</span> <span class="hljs-title function_">authenticate</span>
    redirect_to <span class="hljs-string">&quot;/login&quot;</span> <span class="hljs-keyword">unless</span> logged_in?
  <span class="hljs-keyword">end</span>
<span class="hljs-keyword">end</span>

<span class="hljs-title class_">We</span> <span class="hljs-keyword">then</span> need to update our <span class="hljs-title class_">User</span> model so we know <span class="hljs-keyword">if</span> the current user is an <span class="hljs-symbol">admin:</span>

  <span class="hljs-keyword">def</span> <span class="hljs-title function_">is_admin?</span>
    <span class="hljs-keyword">return</span> <span class="hljs-literal">true</span> <span class="hljs-keyword">if</span> <span class="hljs-comment">#add your logic here</span>
  <span class="hljs-keyword">end</span>

<span class="hljs-title class_">Finally</span>, we update the configuration <span class="hljs-keyword">in</span> the the <span class="hljs-title class_">Spina</span> <span class="hljs-symbol">initializer:</span>

config.authentication = <span class="hljs-string">&quot;BigAuth&quot;</span>