initial commit

htdocs/libraries/Nibble-Forms/Nibble/NibbleForms/Field/MultipleOptions.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace Nibble\NibbleForms\Field;
+
+abstract class MultipleOptions extends BaseOptions
+{
+
+    protected $minimum_selected = false;
+
+    public function __construct($label, $attributes = array())
+    {
+        parent::__construct($label, $attributes);
+        if (isset($attributes['minimum_selected'])) {
+            $this->minimum_selected = $attributes['minimum_selected'];
+        }
+    }
+
+    public function validate($val)
+    {
+        if (is_array($val)) {
+            if ($this->minimum_selected && count($val) < $this->minimum_selected) {
+                $this->error[] = sprintf('at least %s options must be selected', $this->minimum_selected);
+            }
+            foreach ($val as $answer) {
+                if (in_array($answer, $this->false_values)) {
+                    $this->error[] = "$answer is not a valid choice";
+                }
+            }
+        } elseif ($this->required) {
+            $this->error[] = 'is required';
+        }
+
+        return !empty($this->error) ? false : true;
+    }
+
+}