docs: improve upgrade_430 and changelog

contributing/pull_request.md

@@ -121,10 +121,14 @@ all changes will need an entry in it, but the following items should.
 
 #### Upgrading Guide
 
-If your PR requires users to do something when they upgrade CodeIgniter, the
-[Upgrading Guide](https://codeigniter4.github.io/CodeIgniter4/installation/upgrading.html) is also needed.
-
-Add an instruction what to do.
+If your PR requires users to do something when they upgrade CodeIgniter, or
+changes the Config values,
+the [Upgrading Guide](https://codeigniter4.github.io/CodeIgniter4/installation/upgrading.html)
+is also needed.
+
+- Add an instruction what to do when upgrading.
+- If you add new properties or changes default values in Config files, add the
+changes in *"Project Files > Content Changes > Config"*.
 
 ### CSS
 

user_guide_src/source/changelogs/v4.3.0.rst

@@ -27,6 +27,18 @@ Exceptions when Database Errors Occur
 
 - The exceptions thrown by the database connection classes have been changed to ``CodeIgniter\Database\Exceptions\DatabaseException``. Previously, different database drivers threw different exception classes, but these have been unified into ``DatabaseException``.
 - The exceptions thrown by the ``execute()`` method of Prepared Queries have been changed to ``DatabaseException``. Previously, different database drivers might throw different exception classes or did not throw exceptions, but these have been unified into ``DatabaseException``.
+- ``DBDebug`` and ``CI_DEBUG``
+
+    - To be consistent in behavior regardless of environments, ``Config\Database::$default['DBDebug']``
+      and ``Config\Database::$tests['DBDebug']`` has been changed to ``true`` by default. With these
+      settings, an exception is always thrown when a database error occurs.
+    - Now ``DatabaseException`` thrown in ``BaseBuilder`` is thrown if ``$DBDebug`` is true.
+      Previously, it is thrown if ``CI_DEBUG`` is true.
+    - The default value of ``BaseConnection::$DBDebug`` has been changed to ``true``.
+    - With these changes, ``DBDebug`` **now means whether or not to throw an exception when an error occurs**.
+      Although unrelated to debugging, the name has not been changed.
+    - Now when you delete without WHERE clause in ``Model``, ``DatabaseException`` is thrown even if
+      ``CI_DEBUG`` is false. Previously, it is thrown if ``CI_DEBUG`` is true.
 
 HTTP Status Code and Exit Code when Exception Occurs
 ----------------------------------------------------
@@ -48,6 +60,7 @@ Time
 ----
 
 The following methods of the :doc:`Time <../libraries/time>` class had bugs that changed the state of the current object. To fix these bugs, the Time class has been fixed:
+
     - ``add()``
     - ``modify()``
     - ``setDate()``
@@ -113,6 +126,7 @@ ValidationInterface
 
 - The third parameter ``$dbGroup`` for ``ValidationInterface::run()`` has been added.
 - The following methods are added to the interface:
+
     - ``ValidationInterface::setRule()``
     - ``ValidationInterface::getRules()``
     - ``ValidationInterface::getRuleGroup()``
@@ -148,8 +162,10 @@ Database Forge
 - The method signature of ``Forge::addPrimaryKey()`` has changed. An additional optional parameter ``$keyName`` has been added.
 - The method signature of ``Forge::addUniqueKey()`` has changed. An additional optional parameter ``$keyName`` has been added.
 - The following method has an additional ``$asQuery`` parameter. When set to ``true`` the method returns a stand alone SQL query.
+
     - ``CodeIgniter\Database\Forge::_processPrimaryKeys()``
 - In addition to the added ``$asQuery`` parameter above the following methods also now return an array.
+
     - ``CodeIgniter\Database\Forge::_processIndexes()``
     - ``CodeIgniter\Database\Forge::_processForeignKeys()``
 
@@ -158,6 +174,7 @@ Others
 
 - **API:** The return type of ``API\ResponseTrait::failServerError()`` has been changed to ``ResponseInterface``.
 - The following methods have been changed to accept ``ResponseInterface`` as a parameter instead of ``Response``.
+
     - ``Debug\Exceptions::__construct()``
     - ``Services::exceptions()``
 
@@ -247,6 +264,8 @@ Error Handling
 - To *temporarily* enable throwing of deprecations, set the environment variable ``CODEIGNITER_SCREAM_DEPRECATIONS`` to a truthy value.
 - ``Config\Logger::$threshold`` is now, by default, environment-specific. For production environment, default threshold is still ``4`` but changed to ``9`` for other environments.
 
+.. _v430-multiple-domain-support:
+
 Multiple Domain Support
 =======================
 
@@ -274,14 +293,6 @@ Changes
 
 - Config
     - All atomic type properties in ``Config`` classes have been typed.
-    - Changed the default setting to not redirect when a CSRF check fails so that it is easy to see that it is a CSRF error.
-    - The default ``Config\App::$appTimezone`` has been changed to ``UTC`` to avoid being affected by daylight saving time.
-- DBDebug and CI_DEBUG
-    - To be consistent in behavior regardless of environments, ``Config\Database::$default['DBDebug']`` and ``Config\Database::$tests['DBDebug']`` has been changed to ``true`` by default. With these settings, an exception is always thrown when a database error occurs.
-    - Now ``DatabaseException`` thrown in ``BaseBuilder`` is thrown if ``$DBDebug`` is true. Previously, it is thrown if ``CI_DEBUG`` is true.
-    - The default value of ``BaseConnection::$DBDebug`` has been changed to ``true``.
-    - With these changes, ``DBDebug`` now means whether or not to throw an exception when an error occurs. Although unrelated to debugging, the name has not been changed.
-    - Now when you delete without WHERE clause in ``Model``, ``DatabaseException`` is thrown even if ``CI_DEBUG`` is false. Previously, it is thrown if ``CI_DEBUG`` is true.
 - Changed the processing of Spark commands:
     - The ``CodeIgniter\CodeIgniter`` no longer handles Spark commands.
     - The ``CodeIgniter::isSparked()`` method has been removed.

user_guide_src/source/installation/upgrade_430.rst

@@ -21,7 +21,7 @@ spark
 The following files received significant changes and
 **you must merge the updated versions** with your application:
 
-* ``spark``
+- ``spark``
 
 .. important:: If you do not update this file, Spark commands will not work at all after running ``composer update``.
 
@@ -45,6 +45,14 @@ Config Files
 Breaking Changes
 ****************
 
+Database Exception Changes
+==========================
+
+- The exception classes may be changed when database errors occur. If you catch the exceptions,
+  you must confirm that your code can catch the exceptions.
+- Now a few exceptions will be thrown even if ``CI_DEBUG`` is false.
+- See :ref:`exceptions-when-database-errors-occur` for details.
+
 HTTP Status Code and Exit Code of Uncaught Exceptions
 =====================================================
 
@@ -186,11 +194,6 @@ The data returned has the following structure::
      * ]
      */
 
-Others
-======
-
-- The exception classes may be changed when database errors occur. If you catch the exceptions, you must confirm that your code can catch the exceptions. See :ref:`exceptions-when-database-errors-occur` for details.
-
 Breaking Enhancements
 *********************
 
@@ -228,20 +231,45 @@ Content Changes
 The following files received significant changes (including deprecations or visual adjustments)
 and it is recommended that you merge the updated versions with your application:
 
-* ``app/Config/DocTypes.php``
-    * The property ``$html5`` to determine whether to remove the solidus (``/``) character for void HTML elements (e.g. ``<input>``) is added, and set to ``true`` by default for HTML5 compatibility.
-* ``app/Config/Exceptions.php``
-    * Two additional public properties were added: ``$logDeprecations`` and ``$deprecationLogLevel``.
-* ``app/Config/Routes.php``
-    * Due to the fact that the approach to running Spark Commands has changed, there is no longer a need to load the internal routes of the framework.
+Config
+------
+
+- app/Config/App.php
+    - The new property ``$allowedHostnames`` is added to set allowed hostnames in the site URL
+      other than the hostname in the ``$baseURL``. See :ref:`v430-multiple-domain-support`.
+    - The property ``$appTimezone`` has been changed to ``UTC`` to avoid being affected
+      by daylight saving time.
+- app/Config/Autoload.php
+    - The new property ``$helpers`` is added to autoload helpers.
+- app/Config/Database.php
+    - ``$default['DBDebug']`` and ``$test['DBDebug']`` are changed to ``true`` by default.
+      See :ref:`exceptions-when-database-errors-occur`.
+- app/Config/DocTypes.php
+    - The property ``$html5`` to determine whether to remove the solidus (``/``) character for void HTML
+      elements (e.g. ``<input>``) is added, and set to ``true`` by default for HTML5 compatibility.
+- app/Config/Encryption.php
+    - The new property ``$rawData``,  ``$encryptKeyInfo``, and ``$authKeyInfo`` are added for for CI3
+      Encryption compatibility. See :ref:`encryption-compatible-with-ci3`.
+- app/Config/Exceptions.php
+    - Two additional public properties were added: ``$logDeprecations`` and ``$deprecationLogLevel``.
+      See See :ref:`logging_deprecation_warnings` for details.
+- app/Config/Modules.php
+    - The new property ``$composerPackages`` is added to limit Composer package Auto-Discovery for better
+      performance.
+- app/Config/Routes.php
+    - Due to the fact that the approach to running Spark Commands has changed, there is no longer a need
+      to load the internal routes of the framework (``SYSTEMPATH . 'Config/Routes.php'``).
+- app/Config/Security.php
+    - Changed the value of the property ``$redirect`` to ``false`` to prevent redirection when a CSRF
+      check fails. This is to make it easier to recognize that it is a CSRF error.
 
 All Changes
 ===========
 
 This is a list of all files in the **project space** that received changes;
 many will be simple comments or formatting that have no effect on the runtime:
 
-* app/Config/DocTypes.php
-* app/Config/Exceptions.php
-* app/Config/Routes.php
-* spark
+- app/Config/DocTypes.php
+- app/Config/Exceptions.php
+- app/Config/Routes.php
+- spark