Added some basic methods to the models to get roperties from related models or

the related models themselfes.

app/AccountClass.php

@@ -6,5 +6,13 @@ use Illuminate\Database\Eloquent\Model;
 
 class AccountClass extends Model
 {
-    //
+    /*
+     * Get the IO-type of the account class.
+     *
+     * @return Illuminate\Database\Eloquent\Relations\BelongsTo
+     */
+    public function ioType()
+    {
+        return $this->belongsTo('App\IOType');
+    }
 }