fixes update temp folder

README.md

@@ -15,6 +15,16 @@ The support response time is currently about ~1-2 weeks. Users helping each othe
 
 > 👍🏾 Consider [purchasing](https://chevereto.com/pricing) a license to get the entire pack of features, an extra layer of support, and to sustain the development of this software.
 
+## Known issues
+
+### Can't write into `/app/install/update/temp/` path
+
+Older releases (`1.2.0` and below) are missing the temp folder required for the one-click update process. Simply create the folder for the `www-data` user:
+
+```sh
+sudo -u www-data mkdir /var/www/html/app/install/update/temp/
+```
+
 ## 🤯 Next-gen in the works
 
 Chevereto is being modernized by updating its stack and turning towards Open Source. [Read all updates](https://chevereto.com/community/threads/building-the-next-gen-chevereto.11140/) and check the [Chevere Framework](https://chevere.org/).

app/install/update/temp/.gitignore

@@ -0,0 +1,2 @@
+*
+!.gitignore

app/install/update/updater.php

@@ -35,9 +35,6 @@ try {
         throw new Exception(sprintf("Can't write into root %s path", G\absolute_to_relative(G_ROOT_PATH)));
     }
     $update_temp_dir = CHV_APP_PATH_INSTALL . 'update/temp/';
-    if (!is_writable($update_temp_dir)) {
-        throw new Exception(sprintf("Can't write into %s path", G\absolute_to_relative($update_temp_dir)));
-    }
     if (!isset($_REQUEST['action'])) {
         $doctitle = _s('Update in progress');
         $system_template = CHV_APP_PATH_CONTENT_SYSTEM . 'template.php';

app/lib/integrity-check.php

@@ -120,7 +120,7 @@ function check_system_integrity()
 
     /*** Folders check ***/
 
-    $writing_paths = [CHV_PATH_IMAGES, CHV_PATH_CONTENT, CHV_APP_PATH_CONTENT, CHV_APP_PATH_CONTENT_LOCKS];
+    $writing_paths = [CHV_PATH_IMAGES, CHV_PATH_CONTENT, CHV_APP_PATH_CONTENT, CHV_APP_PATH_CONTENT_LOCKS, CHV_APP_PATH_INSTALL . 'update/temp/'];
     foreach ($writing_paths as $v) {
         if (!file_exists($v)) { // Exists?
             if (!@mkdir($v)) {