Update FormHelper.php

disabled multiple checkbox input should not generate an enabled hidden input,
as it leads to saving empty data upon submission -> carrying the disabled attribute to the hidden input prevents this

lib/Cake/View/Helper/FormHelper.php

@@ -2069,7 +2069,8 @@ public function select($fieldName, $options = array(), $attributes = array()) {
 					'id' => $attributes['id'] . ($style ? '' : '_'),
 					'secure' => false,
 					'form' => isset($attributes['form']) ? $attributes['form'] : null,
-					'name' => $attributes['name']
+					'name' => $attributes['name'],
+					'disabled' => $attributes['disabled']
 				);
 				$select[] = $this->hidden(null, $hiddenAttributes);
 			}