WIP 2 (for multiselect)

src/InArrayValidator.php

@@ -125,6 +125,49 @@ public function isValid($value)
         // Multiple isValid() calls must not stack validation messages
         $this->clearMessages();
 
+        if (is_array($value)) {
+            $notInArrayValues = [];
+            foreach ($value as $val) {
+                if (! $this->inArray($val)) {
+                    $notInArrayValues[] = $val;
+                }
+            }
+
+            if (empty($notInArrayValues)) {
+                return true;
+            }
+
+            $value = implode(', ', $notInArrayValues);
+            if (count($notInArrayValues) > 1) {
+                $this->addMessage(sprintf(
+                    $this->translate("'%s' were not found in the haystack"), //BETTER CODE REQUIRED HERE
+                    $value
+                ));
+
+                return false;
+            }
+
+            $this->addMessage(sprintf(
+                $this->translate("'%s' was not found in the haystack"),
+                $value
+            ));
+
+            return false;
+
+        } elseif ($this->inArray($value)) {
+            return true;
+        }
+
+        $this->addMessage(sprintf(
+            $this->translate("'%s' was not found in the haystack"),
+            $value
+        ));
+
+        return false;
+    }
+
+    private function inArray($value)
+    {
         if ($this->getRecursive()) {
             $iterator = new RecursiveIteratorIterator(new RecursiveArrayIterator($this->getHaystack()));
             foreach ($iterator as $element) {
@@ -140,11 +183,6 @@ public function isValid($value)
             return true;
         }
 
-        $this->addMessage(sprintf(
-            $this->translate("'%s' was not found in the haystack"),
-            $value
-        ));
-
         return false;
     }
 }