Addes the item copying action to the item controller.

application/src/Controller/Admin/ItemController.php

@@ -200,6 +200,11 @@ public function editAction()
         return $this->getAddEditView();
     }
 
+    public function copyAction()
+    {
+        return $this->getAddEditView();
+    }
+
     /**
      * Get the add/edit view.
      *
@@ -214,7 +219,7 @@ protected function getAddEditView()
         $form->setAttribute('enctype', 'multipart/form-data');
         $form->setAttribute('id', '$action-item');
 
-        if ('edit' === $action) {
+        if ('edit' === $action || 'copy' === $action) {
             $item = $this->api()->read('items', $this->params('id'))->getContent();
         }
 
@@ -252,7 +257,7 @@ protected function getAddEditView()
 
         $view = new ViewModel;
         $view->setVariable('form', $form);
-        if ('edit' === $action) {
+        if ('edit' === $action || 'copy' === $action) {
             $view->setVariable('item', $item);
             $view->setVariable('resource', $item);
         }

application/view/omeka/admin/item/copy.phtml

@@ -0,0 +1,25 @@
+<?php
+$translate = $this->plugin('translate');
+$escape = $this->plugin('escapeHtml');
+$this->htmlElement('body')->appendAttribute('class', 'add items');
+?>
+
+<script type='text/javascript'>
+var valuesJson = <?php echo json_encode($item->values()); ?>;
+</script>
+
+<?php echo $this->pageTitle("Copied from " . $item->displayTitle(), 1, $translate('Items')); ?>
+<?php $this->trigger('view.add.before'); ?>
+<?php
+echo $this->partial('omeka/admin/item/form.phtml', [
+    'form' => $form,
+    'item' => $item,
+    'resource' => $resource,
+    'mediaForms' => $mediaForms,
+    'submitLabel' => $translate('Add'),
+    'sectionNavEvent' => 'view.add.section_nav',
+    'action' => 'add',
+]);
+?>
+
+<?php $this->trigger('view.add.after'); ?>