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

the related models themselfes.

app/AccountType.php

@@ -6,5 +6,23 @@ use Illuminate\Database\Eloquent\Model;
 
 class AccountType extends Model
 {
-    //
+    /*
+     * Get the account class of the account type.
+     *
+     * @return Illuminate\Database\Eloquent\Relations\BelongsTo
+     */
+    public function accountClass()
+    {
+        return $this->belongsTo('App\AccountClass');
+    }
+    
+    /*
+     * Get the IO-type of the account type.
+     *
+     * @return Illuminate\Database\Eloquent\Relations\BelongsTo
+     */
+    public function ioType()
+    {
+        return $this->accountClass->ioType();
+    }
 }