re-added can* methods for EditableOption field

code/Model/EditableFormField/EditableOption.php

@@ -2,8 +2,10 @@
 
 namespace SilverStripe\UserForms\Model\EditableFormField;
 
+use SilverStripe\Control\Controller;
 use SilverStripe\Core\Convert;
 use SilverStripe\ORM\DataObject;
+use SilverStripe\Security\Member;
 use SilverStripe\Versioned\Versioned;
 
 /**
@@ -30,12 +32,12 @@ class EditableOption extends DataObject
     ];
 
     private static $extensions = [
-        Versioned::class . "('Stage', 'Live')"
+        Versioned::class . "('Stage', 'Live')",
     ];
 
     private static $summary_fields = [
         'Title',
-        'Default'
+        'Default',
     ];
 
     protected static $allow_empty_values = false;
@@ -94,4 +96,87 @@ class EditableOption extends DataObject
 
         parent::onBeforeWrite();
     }
+
+    /**
+     * @param Member $member
+     *
+     * @return boolean
+     */
+    public function canEdit($member = null)
+    {
+        return $this->Parent()->canEdit($member);
+    }
+    /**
+     * @param Member $member
+     *
+     * @return boolean
+     */
+    public function canDelete($member = null)
+    {
+        return $this->canEdit($member);
+    }
+
+    /**
+     * @param Member $member
+     * @return bool
+     */
+    public function canView($member = null)
+    {
+        return $this->Parent()->canView($member);
+    }
+
+    /**
+     * Return whether a user can create an object of this type
+     *
+     * @param Member $member
+     * @param array $context Virtual parameter to allow context to be passed in to check
+     * @return bool
+     */
+    public function canCreate($member = null, $context = [])
+    {
+        // Check parent page
+        $parent = $this->getCanCreateContext(func_get_args());
+        if ($parent) {
+            return $parent->canEdit($member);
+        }
+        // Fall back to secure admin permissions
+        return parent::canCreate($member);
+    }
+
+    /**
+     * @param Member $member
+     * @return bool
+     */
+    public function canPublish($member = null)
+    {
+        return $this->canEdit($member);
+    }
+    /**
+     * @param Member $member
+     * @return bool
+     */
+    public function canUnpublish($member = null)
+    {
+        return $this->canDelete($member);
+    }
+
+    /**
+     * Helper method to check the parent for this object
+     *
+     * @param array $args List of arguments passed to canCreate
+     * @return DataObject Some parent dataobject to inherit permissions from
+     */
+    protected function getCanCreateContext($args)
+    {
+        // Inspect second parameter to canCreate for a 'Parent' context
+        if (isset($args[1]['Parent'])) {
+            return $args[1]['Parent'];
+        }
+        // Hack in currently edited page if context is missing
+        if (Controller::has_curr() && Controller::curr() instanceof CMSMain) {
+            return Controller::curr()->currentPage();
+        }
+        // No page being edited
+        return null;
+    }
 }