* Initial version

src/Form/Element/ObjectMultiCheckbox.php

@@ -0,0 +1,81 @@
+<?php
+
+namespace DoctrineMezzioModule\Form\Element;
+
+use Laminas\Form\Element\MultiCheckbox;
+use Laminas\Stdlib\ArrayUtils;
+use Traversable;
+
+class ObjectMultiCheckbox extends MultiCheckbox
+{
+    /**
+     * @var Proxy
+     */
+    protected $proxy;
+
+    /**
+     * @return Proxy
+     */
+    public function getProxy(): Proxy
+    {
+        if (null === $this->proxy) {
+            $this->proxy = new Proxy();
+        }
+        return $this->proxy;
+    }
+
+    /**
+     * @param  array|Traversable $options
+     * @return self
+     */
+    public function setOptions($options): ObjectMultiCheckbox
+    {
+        $this->getProxy()->setOptions($options);
+        return parent::setOptions($options);
+    }
+
+    /**
+     * @param string $key
+     * @param mixed $value
+     * @return self
+     */
+    public function setOption($key, $value): ObjectMultiCheckbox
+    {
+        $this->getProxy()->setOptions([$key => $value]);
+        return parent::setOption($key, $value);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function setValue($value)
+    {
+        if ($value instanceof Traversable) {
+            $value = ArrayUtils::iteratorToArray($value);
+        } elseif ($value == null) {
+            return parent::setValue([]);
+        } elseif (! is_array($value)) {
+            $value = (array)$value;
+        }
+
+        return parent::setValue(array_map([$this->getProxy(), 'getValue'], $value));
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getValueOptions(): array
+    {
+        if (! empty($this->valueOptions)) {
+            return $this->valueOptions;
+        }
+
+        $proxyValueOptions = $this->getProxy()->getValueOptions();
+
+        if (! empty($proxyValueOptions)) {
+            $this->setValueOptions($proxyValueOptions);
+        }
+
+        return $this->valueOptions;
+    }
+}