Merge branch 'master' of https://bitbucket.org/ikflowdat/ftth

src/FTTHBundle/Admin/NAPAdmin.php

@@ -61,9 +61,9 @@ class NAPAdmin extends BaseAdmin
             ->add('name')
             ->add('parent')
             ->add('olt')
-            ->add('slot')
-            ->add('capacity')
-            ->add('link')
+            ->add('slot', null, array('attr' => array('min' => 0)))
+            ->add('capacity', null, array('attr' => array('min' => 0)))
+            ->add('link', null, array('attr' => array('min' => 0)))
             ->add('address', 'text', [
                 'required' => false,
             ])