Negotiator amends: Make it possible to disable Preview links in… (#2492)

Negotiator amends: Make it possible to disable Preview links in the CMS

code/Controllers/SilverStripeNavigatorItem_LiveLink.php

@@ -3,6 +3,7 @@ namespace SilverStripe\CMS\Controllers;
 
 use SilverStripe\CMS\Model\RedirectorPage;
 use SilverStripe\Control\Controller;
+use SilverStripe\Core\Config\Config;
 use SilverStripe\Core\Convert;
 use SilverStripe\ORM\DataObject;
 use SilverStripe\Versioned\Versioned;
@@ -56,13 +57,20 @@ class SilverStripeNavigatorItem_LiveLink extends SilverStripeNavigatorItem
         $record = $this->record;
         return (
             $record->hasExtension(Versioned::class)
+            && $this->showLiveLink()
             && $record->hasStages()
             && $this->getLivePage()
-            // Don't follow redirects in preview, they break the CMS editing form
-            && !($this->record instanceof RedirectorPage)
         );
     }
 
+    /**
+     * @return bool
+     */
+    public function showLiveLink()
+    {
+        return (bool)Config::inst()->get(get_class($this->record), 'show_live_link');
+    }
+
     public function isActive()
     {
         return (

code/Controllers/SilverStripeNavigatorItem_StageLink.php

@@ -3,6 +3,7 @@ namespace SilverStripe\CMS\Controllers;
 
 use SilverStripe\CMS\Model\RedirectorPage;
 use SilverStripe\Control\Controller;
+use SilverStripe\Core\Config\Config;
 use SilverStripe\Core\ClassInfo;
 use SilverStripe\Core\Convert;
 use SilverStripe\ORM\DataObject;
@@ -62,13 +63,20 @@ class SilverStripeNavigatorItem_StageLink extends SilverStripeNavigatorItem
         $record = $this->record;
         return (
             $record->hasExtension(Versioned::class)
+            && $this->showStageLink()
             && $record->hasStages()
             && $this->getDraftPage()
-            // Don't follow redirects in preview, they break the CMS editing form
-            && !($record instanceof RedirectorPage)
         );
     }
 
+    /**
+     * @return bool
+     */
+    public function showStageLink()
+    {
+        return (bool)Config::inst()->get(get_class($this->record), 'show_stage_link');
+    }
+
     public function isActive()
     {
         return (

code/Model/RedirectorPage.php

@@ -24,6 +24,10 @@ class RedirectorPage extends Page
 
     private static $icon_class = 'font-icon-p-redirect';
 
+    private static $show_stage_link = false;
+
+    private static $show_live_link = false;
+
     private static $db = array(
         "RedirectionType" => "Enum('Internal,External','Internal')",
         "ExternalURL" => "Varchar(2083)" // 2083 is the maximum length of a URL in Internet Explorer.

code/Model/SiteTree.php

@@ -137,6 +137,18 @@ class SiteTree extends DataObject implements PermissionProvider, i18nEntityProvi
      */
     protected static $_allowedChildren = array();
 
+    /**
+     * Determines if the Draft Preview panel will appear when in the CMS admin
+     * @var bool
+     */
+    private static $show_stage_link = true;
+
+    /**
+     * Determines if the Live Preview panel will appear when in the CMS admin
+     * @var bool
+     */
+    private static $show_live_link = true;
+
     /**
      * The default child class for this page.
      * Note: Value might be cached, see {@link $allowed_chilren}.