first iteration of base controller

app/controllers/BaseController.php

@@ -0,0 +1,58 @@
+<?php
+
+abstract class BaseController
+{
+
+    use RequiresAuth;
+    
+    protected $f3;
+
+    public function __construct()
+    {
+        $this->f3 = \Base::instance();
+    }
+
+
+    // helper function 
+
+    protected function getDB()
+    {
+        return $this->f3->get('DB');
+    }
+
+    /**
+     * Enforce that the user is logged in before proceeding.
+     */
+    protected function requireLogin()
+    {
+        // using trait
+        $this->check_access($this->f3);
+        return;
+
+        // abstract
+        if(!$this->f3->exists('SESSION.user')){
+            $this->f3->set('SESSION.redirect', $this->f3->get('PATH'));
+            $this->f3->reroute('/login');
+        }
+    }
+
+    /**
+     * Set up a main layout template and inject the specified view path
+     * optional $data to pass variables down to template
+     */
+    protected function renderView(string $viewPath, array $data = []):void
+    {
+        foreach($data as $key => $value){
+            $this->f3->set($key, $value);
+        }
+
+        // set {{content}}
+        $this->f3->set('content', $viewPath);
+        
+        // render tempalte
+        echo \Template::instance()->render('../ui/templates/layout.html');
+        
+        // clear SESSION.error
+        $this->f3->clear('SESSION.error');
+    }
+}