SEF: Change value for trailingslash option (#43195)

Author: Hackwar

plugins/system/sef/sef.xml

@@ -49,12 +49,12 @@
 					type="list"
 					label="PLG_SEF_TRAILINGSLASH_LABEL"
 					description="PLG_SEF_TRAILINGSLASH_DESCRIPTION"
-					default="0"
+					default="-1"
 					filter="option"
 				>
-					<option value="0">PLG_SEF_TRAILINGSLASH_OPTION_NONE</option>
-					<option value="1">PLG_SEF_TRAILINGSLASH_OPTION_NO_SLASH</option>
-					<option value="2">PLG_SEF_TRAILINGSLASH_OPTION_SLASH</option>
+					<option value="-1">PLG_SEF_TRAILINGSLASH_OPTION_NONE</option>
+					<option value="0">PLG_SEF_TRAILINGSLASH_OPTION_NO_SLASH</option>
+					<option value="1">PLG_SEF_TRAILINGSLASH_OPTION_SLASH</option>
 				</field>
 			</fieldset>
 		</fields>

plugins/system/sef/src/Extension/Sef.php

@@ -106,7 +106,7 @@ public function onAfterRoute()
         }
 
         // Check for trailing slash
-        if ($app->get('sef') && !$app->get('sef_suffix') && $this->params->get('trailingslash')) {
+        if ($app->get('sef') && !$app->get('sef_suffix') && $this->params->get('trailingslash', '-1') != '-1') {
             $this->enforceTrailingSlash();
         }
     }
@@ -348,14 +348,14 @@ protected function enforceTrailingSlash()
         $originalUri = Uri::getInstance();
 
         if (
-            (int)$this->params->get('trailingslash') === 1
+            (int)$this->params->get('trailingslash') === 0
             && str_ends_with($originalUri->getPath(), '/')
             && $originalUri->toString(['scheme', 'host', 'port', 'path']) !== Uri::root()
         ) {
             // Remove trailingslash
             $originalUri->setPath(substr($originalUri->getPath(), 0, -1));
             $this->getApplication()->redirect($originalUri->toString(), 301);
-        } elseif ((int)$this->params->get('trailingslash') === 2 && !str_ends_with($originalUri->getPath(), '/')) {
+        } elseif ((int)$this->params->get('trailingslash') === 1 && !str_ends_with($originalUri->getPath(), '/')) {
             // Add trailingslash
             $originalUri->setPath($originalUri->getPath() . '/');
             $this->getApplication()->redirect($originalUri->toString(), 301);